JP2006163941A - Duplicate record detection system and, duplicate record detection program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that duplicate information can not be detected if fluctuation or the like in description is included in information registered in a database. <P>SOLUTION: A similarity calculation part 3 calculates similarity between records read from the database 2 by use of a conversion word dictionary 5 in which synonyms and omissible words are registered. The conversion word dictionary 5 is composed of a synonym dictionary and an omissible word dictionary. In the synonym dictionary, a representative word as an another word synonymous with a certain word, and in the omissible word dictionary, mutually omissible words are registered. A duplicate candidate extraction part 6 extracts, as a duplicate record candidate, a pair of records whose similarity is a predetermined threshold or above. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a duplicate record detection system and a duplicate record detection program for detecting information that is duplicately registered in a database in which information such as stores is registered.

  Duplicate information may be registered in a database composed of information on stores, people, books, and the like.

  Specifically, for example, the same information is registered in the database in different formats, or is registered in the database with synonymous but different words. If the same information is duplicated and registered in the database, there is a problem that the capacity of the database becomes large.

  In order to reduce the capacity of the database, Patent Document 1 describes a system that detects duplicate registration of information of the same person from a database in which information of many persons is registered.

  Further, in Patent Document 2, when a single book is extracted as a search target from a database in which book information is registered, a search is performed even if a plurality of identical books are registered in the database in different formats. A device is described that extracts all the books of interest.

Japanese Patent Laid-Open No. 11-184884 (paragraphs 0017 to 0049, FIG. 1) JP 2004-29969 A (paragraphs 0022 to 0075, FIG. 2)

  For example, the system described in Patent Document 1 normalizes information such as a Kana name, a Kanji name, a Kana address, a Kanji address, a date of birth, etc. into a format based on a unified notation, so that information on the same person is obtained. Detect duplicate registrations.

  However, the system described in Patent Document 1 has a problem that it is not possible to detect duplicate registration of information registered in the database by using different words that are synonymous. Specifically, for example, if the date of birth of the same person is registered in duplicate in the Western calendar and the Japanese calendar, duplicate registration cannot be detected. Also, duplicate registration cannot be detected if the address information of the same person is registered with the notation "Chiyoda-ku Tokyo ..." and the notation "Chiyoda-ku Tokyo ...". .

  In addition, the apparatus described in Patent Document 2 calculates the similarity between the input information of the search target book and the information of the book registered in the database, and uses a book with a high similarity as a search result. Although it is extracted, the similarity of information registered in the database with the same but different words is low, and there is a problem that such a book is difficult to extract.

  Specifically, for example, when “Nihon” is entered as the name of the book to be searched, the similarity of the book with the name “Japan” is calculated to be low, so the book with the name “Japan” is extracted. It becomes difficult.

  Therefore, an object of the present invention is to provide a duplicate record detection system and a duplicate record detection program for detecting duplicate information from a database even if there is a difference in notation due to synonyms and abbreviations.

  The duplicate record detection system according to the present invention includes a conversion word storage unit that stores conversion words corresponding to words, and words used in information registered in a database that holds a plurality of records composed of a plurality of pieces of information. A combination of a record that is converted into a conversion word stored in the conversion word storage unit and calculates a similarity between records, and a record in which the similarity calculated by the similarity calculation unit is a predetermined value or more The duplication candidate extraction part which extracts the duplication record candidate which is is characterized by the above-mentioned.

  The conversion word storage unit may store the synonym as the conversion word, and the similarity calculation unit converts the word used in the information registered in the database into a corresponding synonym and records between the records. Similarity may be calculated.

  The conversion word storage unit may store an optional word that is an optional word as a conversion word, and the similarity calculation unit can be omitted corresponding to the word used in the information registered in the database. Words may be added to calculate the similarity between records.

  It may include a database information input unit that configures a database record and inputs field information that is a unit in which information registered in the database record is separated. The similarity calculation unit is input to the database information input unit. The similarity between the fields may be calculated based on the field information, and the similarity between the records may be calculated using the calculated similarity between the fields. According to such a configuration, the similarity between records can be calculated using the similarity between fields.

  A duplicate determination rule storage unit that stores a duplicate determination rule that is a rule for determining whether or not the duplicate record candidate extracted by the duplicate candidate extraction unit is a duplicate record that is a combination of records of the same content information; A duplicate record determination unit that determines whether or not a duplicate record candidate is a duplicate record based on the duplicate determination rule stored in the duplicate determination rule storage unit may be included. According to such a configuration, it is possible to automatically determine whether or not a duplicate record candidate is a duplicate record.

  You may include the conversion word candidate extraction part which extracts the conversion word candidate which is a conversion word candidate from the record which the duplication record determination part determined to be a duplication record. According to such a configuration, conversion word candidates can be extracted from duplicate records.

  A conversion word candidate extraction part may each extract the difference part of each record of a duplicate record among the extracted conversion word candidates as a synonym candidate which is a candidate of a synonym. In addition, when one record of the duplicate record is included in the other record of the duplicate record, the conversion word candidate extraction unit determines the difference between the one record and the other record, and the one record and the other record. May be extracted as omissible word candidates that are omissible word candidates that are omissible words.

  The conversion word candidate extraction unit may change the synonym candidate to an omissible word candidate when all the extracted synonym candidates are included in other records, or the conversion word candidate extraction unit extracts Among the synonym candidates, other synonym candidates or synonym candidates composed of combinations of omissible word candidates may be excluded from the synonym candidates, and the conversion word candidate extraction unit may be omitted. Among word candidates, synonym candidates and omissible word candidates included in other omissible word candidates may be excluded from omissible word candidates.

  The conversion word candidate extraction unit may store the synonym candidate as a synonym in the conversion word storage unit and store the omissible word candidate as an omissible word in the conversion word storage unit. According to such a configuration, synonyms and abbreviations can be stored in the conversion word storage unit.

  Includes an input / output unit that outputs duplicate record candidates and conversion word candidates, and a user inputs whether or not the duplicate record candidate is a duplicate record and whether or not the conversion word candidate is a conversion word The duplicate record determination unit may output the duplicate record candidates to the input / output unit in the order in which the number of duplicate record candidates to be output to the input / output unit decreases, and the conversion word candidate extraction unit The conversion word candidates may be output to the input / output unit in the order in which the number of conversion word candidates to be output decreases. According to such a configuration, it is possible to reduce the number of times that the user inputs the determination through the input / output unit.

  The duplicate record determination unit may output the duplicate record candidates to the input / output unit in descending order of the number of records constituting the duplicate record candidate among the duplicate record candidates that have not been determined to be duplicate records.

  The duplicate record determination unit may output a duplicate record candidate that has not been determined to be a duplicate record to the conversion word candidate extraction unit, and the conversion word candidate extraction unit has a large number of conversion record candidates extracted. May be output to the input / output unit in order from the conversion word candidates extracted from.

  The duplicate record database that stores the combination of records determined by the user via the duplicate record determination unit or the input / output unit if it is a duplicate record, and the records that make up the combination of records stored in the duplicate record database Of these, a duplicate record deletion unit that deletes records other than one record from the database may be included. According to such a configuration, duplicate records can be deleted from the database.

  The information word input by the user to be registered in the database is converted into the conversion word stored in the conversion word storage unit, and the converted word or the information consisting of the word that matches the input information word You may include the database registration part which extracts the record to include from a database, and the display part which displays the record which the database registration part extracted. According to such a configuration, registration of duplicate information in the database can be prevented.

  A duplicate record detection program according to the present invention stores a conversion word corresponding to a word, which is used in information registered in a database holding a plurality of records composed of a plurality of information in a computer. Is a combination of a combination of records in which the similarity calculated by converting to the conversion word stored in the section and calculating the similarity between the records and the similarity calculated by the similarity calculation is equal to or greater than a predetermined value A duplication candidate extraction process for extracting record candidates is executed.

  According to the present invention, duplicate information can be detected from a database even if there is a difference in notation due to synonyms and abbreviations.

Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration example of the first embodiment of the present invention.

  The duplicate record detection system 20 according to the first exemplary embodiment of the present invention includes a conversion word dictionary including a synonym dictionary in which synonyms are registered and an abbreviation word dictionary in which omissible words are registered. (Translation word storage unit) 5, similarity calculation unit 3 that calculates similarity between a plurality of records registered in the database 2 in which store information is registered, using the conversion word dictionary 5, similarity calculation It includes a duplication candidate extraction unit 6 that extracts information whose similarity calculated by the unit 3 is equal to or greater than a predetermined threshold, and a storage unit 1 that stores a program for controlling the operation of each unit.

  The duplicate record detection system 20 is realized by a computer such as a server that executes processing by a program. Note that the duplicate record detection system 20 may execute processing according to a program stored in an external storage medium. In the conversion word dictionary 5, synonyms and omissible words are registered in advance.

  FIG. 2 is an explanatory diagram showing an example of information registered in the database 2. In the database 2, for example, store names, addresses, and telephone numbers are registered. In the database 2, information on each store is registered by being divided into records, and each information on the store is registered by being divided into fields corresponding to attributes of each information of the registered records. And Specifically, in the example shown in FIG. 2, each information of “NC Nara branch” is registered in the record with the record ID “001”, and “Niden Nara branch” is recorded in the record with the record ID “002”. Each information is registered, and each information of “NEC Nara branch” is registered in the record with the record ID “003”.

  In addition, “NC Nara branch”, “Nippen Nara branch”, and “NEC Nara branch” are registered in the name field of each record in the database 2, and “○○○ 1's” is registered in the address field. 1 ”,“ XXX1-1 ”, and“ XXX1-1 ”are registered, and the phone number fields include“ 000-111-1234 ”,“ 000-111-1235 ”, And “000-111-1234” are registered.

  The database 2 may include a database information input unit 4 that inputs information such as the number of fields of each record in the database 2 and outputs the input database 2 information to the similarity calculation unit 3. In the database information input unit 4, a user may input information of the database 2 using input means such as a keyboard. The database information input unit 4 may read information of the database 2 stored in the storage unit 1 or an external storage medium.

  In the database information input unit 4, for example, which field represents what (for example, the first field of each record is an ID), which field and which field are combined and handled as one field. (For example, each field whose address is divided into “prefecture”, “municipalities”, and “address and building name” is treated as one field), the conversion word dictionary 5 is used to calculate the similarity of which field. And the weight of each field when calculating the similarity between records (the ratio of the weight of the name field, address field, and telephone number field is 1: 1: 1).

  FIG. 3 is an explanatory diagram showing an example of information registered in the conversion word dictionary 5. In the synonym dictionary constituting the conversion word dictionary 5, a word and a representative word that is a representative word among the synonyms of the word are registered in association with each other. Further, in the omissible word dictionary constituting the conversion word dictionary 5, the representative group that can be omitted among the representative words is registered with the same group ID.

  According to the example of FIG. 3, the representative word for “NC” and “NEC” is “NEC”, and the representative word for “NEC” is “Nippon Electric”. “NEC” and “Nikkei” are abbreviations that can be omitted from each other.

  In the synonym dictionary, the words in the synonym column are not used as representative words. In the abbreviation word dictionary, a word registered as an abbreviation word may be a representative word, but is not a synonym.

  The similarity calculation unit 3 decomposes each piece of information registered in the database 2 into word units using a method such as morphological analysis. Note that other methods of decomposing information into word units include, for example, decomposing into word units before and after spaces, and decomposing into word units at positions where the character type switches (for example, positions where katakana switches to kanji). There is a way to do it. The similarity calculation unit 3 searches the synonym dictionary, and when the decomposed word is registered as a synonym in the synonym dictionary, the similarity calculation unit 3 converts it into a representative word associated with the synonym.

  The similarity calculation unit 3 searches the abbreviation word dictionary, and if the word converted into the representative word is registered as an abbreviation word, the abbreviation word having the same group ID is stored in the database 2. Add to registered record words. And the similarity calculation part 3 is converted into a representative word, and calculates the similarity between each record to which the omissible word was added.

  For example, the similarity calculation unit 3 calculates the similarity between the records by comparing the characters of the words in the corresponding fields of each information one by one from the beginning, and if they match, the similarity of the characters is calculated. If it does not match, the similarity of the character is set to 0. Then, for example, a quotient obtained by dividing the number of similarities of each character by the number of characters of the word (that is, a value normalized between 0 and 1) is used as the similarity of the field. If the number of characters in each information field is different, the quotient obtained by dividing the total number of similarities of each character by the largest number of characters constituting each field is the similarity of the field. To do.

  Then, the similarity calculation unit 3 divides the product of the similarity of each field by a predetermined weight value for each field and divides the product by the number of fields (that is, between 0 and 1). Calculated as the similarity of the records.

  The similarity calculation method of the present invention is not limited to the above-described method, and other methods such as a method using an edit distance may be used. Note that the similarity calculation unit 3 may calculate the similarity of each field and each record based on information input to the database information input unit 4.

  The duplication candidate extraction unit 6 extracts a set of records whose similarity calculated by the similarity calculation unit 3 is equal to or greater than a predetermined threshold as a duplication record candidate. In addition, the duplication candidate extraction part 6 may extract a duplication record candidate using another method.

  The duplicate record detection system 20 has a conversion word dictionary 5 that stores words used in information registered in a database holding a plurality of records composed of a plurality of information in a computer, and stores conversion words corresponding to the words. Duplicate record candidate that is a combination of a similarity calculation process that converts to a stored conversion word and calculates the similarity between records, and a record in which the similarity calculated by the similarity calculation process is greater than or equal to a predetermined value A duplicate record detection program for executing a duplicate candidate extraction process for extracting a record is installed.

  Next, the operation of the first exemplary embodiment of the present invention will be described with reference to the drawings with a specific example. Duplicate record candidates are extracted from the information registered in the database 2 shown in the example of FIG. FIG. 4 is a flowchart for explaining the operation of the first embodiment of the present invention.

  First, the similarity calculation unit 3 reads information registered in the database 2 (step S101). The field of the record name with the record ID “001” is “NC Nara branch”. The similarity calculation unit 3 performs morphological analysis or the like on the “NEC Nara branch” and breaks it down into words (step S102). Specifically, it is broken down into “NEC”, “Nara” and “Branch”.

  Here, it is assumed that the information input to the database information input unit 4 indicates that the conversion word dictionary 5 is used for the similarity calculation of the name field and the address field. Then, the similarity calculation unit 3 refers to the conversion word dictionary 5 and converts it into a representative word if the decomposed word is a synonym (step S103). Referring to FIG. 3, “NEC” is a synonym, so “NEC” is converted to “NEC” which is a representative word. Since “Nara” and “Branch” are not registered in the synonym dictionary, they are not converted. Then, the words of the record ID “001” are “NEC”, “Nara”, and “Branch”.

  Next, the similarity calculation unit 3 refers to the conversion word dictionary 5 and adds an omissible word having the same group ID if there is an omissible word (step S104). Referring to FIG. 3, “NEC” is added because “NEC” and “Nikkei” are abbreviations of the same group ID. Then, the words of the record ID “001” are “NEC”, “Nichiden”, “Nara”, and “Branch”.

  The similarity calculation unit 3 combines the decomposed words (step S105). Then, the field of the record name with the record ID “001” is converted to “NEC Niden Nara Branch” and “Nikden NEC Nara Branch”.

  The similarity calculation unit 3 performs the above-described operations from step S101 to step S105 for the record ID “002” and the record ID “003”.

  Specifically, the field of the record name with the record ID “002” is “Nippon Nara Branch”. The similarity calculation unit 3 performs morphological analysis on “Nippon Nara Branch” and breaks it down into words. Specifically, it is broken down into “Nipponden”, “Nara” and “Branch”.

  The similarity calculation unit 3 refers to the conversion word dictionary 5 and converts each decomposed word into a representative word if each word is a synonym. Referring to FIG. 3, “Nichiden” is a representative word, and “Nara” and “Branch” are not registered in the synonym dictionary, and therefore, conversion is not performed.

  Next, the similarity calculation unit 3 refers to the conversion word dictionary 5 and adds an omissible word having the same group ID if there is an omissible word. Referring to FIG. 3, “NEC” is added to “NEC” because “NEC” is an abbreviation for the same group ID. Then, the words of the record ID “002” are “NEC”, “Nichiden”, “Nara”, and “Branch”.

  The similarity calculation unit 3 combines the decomposed words. Then, the field of the record name with the record ID “002” is converted to “NEC Niden Nara Branch” and “Nikden NEC Nara Branch”.

  Similarly, the field of the name of the record with the record ID “003” is “NEC Nara branch”. The similarity calculation unit 3 performs morphological analysis on “NEC Nara branch” and breaks it down into words. Specifically, it is broken down into “NEC”, “Nara”, and “Branch”.

  The similarity calculation unit 3 refers to the conversion word dictionary 5 and converts each decomposed word into a representative word if each word is a synonym. Referring to FIG. 3, “NEC” is a representative word, and “Nara” and “Branch” are not registered in the synonym dictionary, so conversion is not performed.

  Next, the similarity calculation unit 3 refers to the conversion word dictionary 5 and adds an omissible word having the same group ID if there is an omissible word. Referring to FIG. 3, “NEC” is added because “NEC” and “Nikkei” are abbreviations of the same group ID. Then, the words of the record ID “006” are “NEC”, “Nichiden”, “Nara”, and “Branch”.

  The similarity calculation unit 3 combines the decomposed words. Then, the field of the record name with the record ID “003” is converted into “NEC Niden Nara Branch” and “Nikden NEC Nara Branch”.

  Next, the similarity calculation unit 3 calculates the mutual similarity of the fields with the names of the converted record IDs “001”, “002”, and “003” (step S106).

  First, the similarity between the field with the record ID “001” and the field with the record ID “002” is calculated. The converted name fields of the record ID “001” are “NEC Niden Nara Branch” and “Nikden NEC Nara Branch”, and the converted name field of the record ID “002” is “NEC Niden Nara Branch”. “Nippon NEC Nara Branch”. Since “NEC Niden Nara Branch” with record ID “001” and “NEC Niden Nara Branch” with record ID “002” match 9 characters out of 9 characters, 9 × 1 ÷ 9 = 1. Is 1.

  Similarly, “Nippen NEC Nara Branch” with record ID “001” and “Nichiden NEC Nara Branch” with record ID “002” match 9 characters out of 9 characters, so 9 × 1 ÷ 9 = 1. The similarity is 1.

  Also, “NEC Niden Nara Branch” with record ID “001” and “Nichiden NEC Nara Branch” with record ID “002” match 4 out of 9 characters, so 4 × 1 ÷ 9 = 0.44. (The third decimal place is rounded off), and the similarity is 0.44.

  Similarly, since “Nikden NEC Nara Branch” with record ID “001” and “NEC Niden Nara Branch” with record ID “002” match 4 characters out of 9, 4 × 1 ÷ 9 = 0.44 (rounded to the third decimal place) and the similarity is 0.44.

  Here, the similarity calculation unit 3 adopts a value having the highest similarity. Then, the similarity between the field with the record ID “001” and the field with the record ID “002” is 1.

  Similarly, when the similarity between the field with the record ID “001” and the field with the record ID “003” is calculated, the similarity is 1. When the similarity between the field with the record ID “002” and the field with the record ID “003” is calculated, the similarity is 1.

  Next, the similarity calculation unit 3 calculates the mutual similarity between the address fields of the record IDs “001”, “002”, and “003” (step S107).

  The address field of the record ID “001” is “1 of XXX1”, the address field of the record ID “002” is “XXX1-1”, and the address of the record ID “003”. The field is “◯◯◯ 1-1”.

  Since 5 out of 6 characters match the address field “xxx1” of the record ID “001” and the address field “xxx1-1” of the record ID “002”, 5 × 1 ÷ 6 = 0.83 (rounded to the third decimal place), and the similarity is 0.83.

  Since 5 out of 6 characters match the address field “XXX1” of the record ID “001” and the address field “XXX1-1” of the record ID “003”, 5 × 1 ÷ 6 = 0.83 (rounded to the third decimal place), and the similarity is 0.83.

  Since 6 out of 6 characters match the address field “XXX1-1” of the record ID “002” and the address field “XXX1-1” of the record ID “003”, 6 × 1 ÷ 6 = 1, and the similarity is 1.

  Next, the similarity calculation unit 3 calculates the mutual similarity between the telephone number fields of the record IDs “001”, “002”, and “003” (step S108).

  The telephone number field of the record ID “001” is “000-111-1234”, the telephone number field of the record ID “002” is “000-111-1235”, and the telephone number of the record ID “003”. The field of “000-111-1234”.

  Since 11 out of 12 characters match the telephone number field “000-111-1234” of the record ID “001” and the telephone number field “000-111-1235” of the record ID “002”, 11 × 1 ÷ 12 = 0.92 (rounded to the third decimal place), and the similarity is 0.92.

  Since 12 of the 12 characters match the telephone number field “000-111-1234” of the record ID “001” and the telephone number field “000-111-1234” of the record ID “003”, 12 X1 ÷ 12 = 1, and the similarity is 1.

  Since 11 out of 12 characters match the telephone number field “000-111-1235” of the record ID “002” and the telephone number field “000-111-1234” of the record ID “003”, 11 × 1 ÷ 12 = 0.92 (rounded to the third decimal place), and the similarity is 0.92.

  The similarity calculation unit 3 calculates the total number of products obtained by multiplying the similarity of each field of the record IDs “001”, “002”, and “003” by the similarity value of each field and the weight value. The quotient divided by the number is calculated as the similarity between the records (step S109). Here, it is assumed that the information input to the database information input unit 4 indicates that the weight ratio of the name field, address field, and telephone number field is 1: 1: 1.

  Then, the similarity between the record ID “001” and the record ID “002” is (1 × 1 + 0.83 × 1 + 0.92 × 1) ÷ 3 = 0.92 (rounded to the third decimal place).

  The similarity between the record ID “001” and the record ID “003” is (1 × 1 + 0.83 × 1 + 1 × 1) ÷ 3 = 0.94 (rounded to the third decimal place).

  The similarity between the record ID “002” and the record ID “003” is (1 × 1 + 1 × 1 + 0.92 × 1) ÷ 3 = 0.97 (rounded to the third decimal place).

  The similarity calculation unit 3 outputs the calculated similarity of each record set and the record set for which the similarity is calculated to the duplication candidate extraction unit 6. The duplicate candidate extraction unit 6 extracts each record whose similarity calculated by the similarity calculation unit 3 is a predetermined threshold or more as a duplicate record candidate (step S110). Here, if the predetermined threshold is 0.90, the duplicate candidate extraction unit 6 extracts the record ID “001”, the record ID “002”, and the record ID “003” as duplicate record candidates.

  The display unit (not shown) displays each record extracted by the duplication candidate extraction unit 6 (step S111).

  As described above, according to this embodiment, duplicate information can be extracted from the database 2 even if there is a difference in notation by synonyms and abbreviations.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a block diagram showing a configuration example of the second embodiment of the present invention.

  The configuration of the second embodiment of the present invention is a duplicate rule that determines whether or not the duplicate record candidate extracted by the duplicate candidate extraction unit 6 is a duplicate record in the configuration of the first embodiment. Based on the rules stored in the duplicate determination rule storage unit 8 and the duplicate determination rule storage unit 8 that store the determination rule, it is determined whether or not the duplicate record candidate extracted by the duplicate candidate extraction unit 6 is a duplicate record. The duplicate record determination unit 7 and the duplicate record database 9 that stores the record that the duplicate record determination unit 7 determines to be a duplicate record are added, and the other components are the same as those in the first embodiment. The other components are denoted by the same reference numerals as those in FIG.

  FIG. 6 is an explanatory diagram illustrating an example of a duplication determination rule. According to the example shown in FIG. 6, the duplication determination rule specifies, for example, a rule that, if the degree of similarity between records exceeds a specific value, these are regarded as duplicate records, and the degree of similarity between records is specified. There is a rule that if it is less than or equal to the value, it is considered that it is not a duplicate record, or there is a rule that if any of the similarity of any field is less than a certain value, it is considered that it is not a duplicate record If the similarity of a field is greater than or equal to a predetermined value and the similarity of another field is greater than or equal to a predetermined value, they are regarded as duplicate records.

  FIG. 7 is an explanatory diagram illustrating an example of the overlap determination rule stored in the overlap determination rule storage unit 8. As shown in the example of FIG. 7, the duplication determination rule includes a condition part (a part below IF in FIG. 7) and a conclusion part (a part below THEN in FIG. 7).

  The condition part includes conditions such as the value of the similarity of the record set and the value of the similarity of the field set larger, smaller, above, or below, such as AND, OR, and NOT. Describe in combination.

  In the conclusion portion, a record set that matches the condition described in the condition portion is described as a duplicate record, or is described as not being a duplicate record. In the conclusion part, the nesting of the condition part may be described.

  In the example shown in the expression (1) in FIG. 7, a rule is described that if the similarity value of a record set is 1, it is a duplicate record. Further, in the example shown in the expression (2) in FIG. 7, when the similarity of the address field pair exceeds 0.9 and the similarity of the telephone number field pair exceeds 0.9, If the similarity of the name field pair exceeds 0.9, the record pair is a duplicate record, and if the similarity of the name field pair is 0.9 or less, the record pair is not a duplicate record. The rule is described.

  The similarity calculation unit 3 outputs the calculated similarity of each field set and the similarity of each record set to the duplication candidate extraction unit 6. The duplicate candidate extraction unit 6 extracts each record whose similarity calculated by the similarity calculation unit 3 is equal to or greater than a predetermined threshold as a duplicate record candidate. The record group similarity is output to the duplicate record determination unit 7.

  The operation of the second exemplary embodiment of the present invention will be described with a specific example. First, a case where it is determined whether or not the record ID “001”, the record ID “002”, and the record ID “003” illustrated in the example of FIG. 2 are duplicate records will be described.

  Since the operation until the similarity calculation unit 3 calculates the similarity of each field set and the similarity of each record set is the same as the operation in the first embodiment, the description thereof is omitted.

  The similarity calculation unit 3 outputs the calculated similarity of each field set and the similarity of each record set to the duplication candidate extraction unit 6. The duplicate candidate extraction unit 6 extracts each record whose similarity calculated by the similarity calculation unit 3 is equal to or greater than a predetermined threshold as a duplicate record candidate, the similarity of each field set of the duplicate record candidate, and each record Are output to the duplicate record determination unit 7. Here, when the predetermined threshold is 0.9, the duplication candidate extraction unit 6 extracts the record ID “001”, the record ID “002”, and the record ID “003” as duplicate record candidates.

  Since the similarity between the record ID “001” and the record ID “002” is 0.92, the duplicate record determination unit 7 determines that the condition part (similarity between record pairs) of the formula (1) shown in the example of FIG. Since the value of 1 does not match 1), the expression (1) is not applied to the determination of the duplicate record of the record ID “001” and the record ID “002”.

  The duplicate record determination unit 7 has a similarity of 1 between the address field of the record ID “001” and the address field of the record ID “002”, but the telephone number field of the record ID “001” and the record ID “002”. ”Is 0.83, the condition part of the formula (2) shown in the example of FIG. 7 (the similarity of the address field pair exceeds 0.9, and the telephone Therefore, Expression (2) is not applied to the determination of duplicate records of the record ID “001” and the record ID “002”.

  In addition, since the similarity between the record ID “001” and the record ID “003” is 0.94, the duplicate record determination unit 7 has a condition part (a set of records) of the formula (1) shown in the example of FIG. Since the similarity value does not match 1), Expression (1) is not applied to the determination of the duplicate record of the record ID “001” and the record ID “003”.

  The duplicate record determination unit 7 has a similarity of 1 between the address field of the record ID “001” and the address field of the record ID “003”, but the telephone number field of the record ID “001” and the record ID “003”. ”Is 0.83, the condition part of the formula (2) shown in the example of FIG. 7 (the similarity of the address field pair exceeds 0.9, and the telephone Therefore, Expression (2) is not applied to the determination of the duplicate record of the record ID “001” and the record ID “003”.

  Since the similarity between the record ID “002” and the record ID “003” is 0.97, the duplicate record determination unit 7 determines the condition part (similarity of record pairs) of the formula (1) shown in the example of FIG. Since the value of 1 does not match 1), Expression (1) is not applied to the determination of duplicate records of the record ID “002” and the record ID “003”.

  The duplicate record determination unit 7 has a similarity of 1 between the address field of the record ID “002” and the address field of the record ID “003”, the telephone number field of the record ID “002”, and the record ID “003”. ”Is 1 in the telephone number field, the condition part of the formula (2) shown in the example of FIG. 7 (the similarity of the address field pair exceeds 0.9 and the telephone number field If the similarity of the pair exceeds 0.9). Further, since the similarity between the name field of record ID “002” and the name field of record ID “003” is 0.92, the condition part (similarity of name field pairs) in the result part of equation (2) Therefore, it is determined that the record ID “002” and the record ID “003” are duplicate records.

  The duplicate record determination unit 7 stores each record determined to be a duplicate record in the duplicate record database 9.

  Note that the duplicate record determination unit 7 may cause the display unit to display a set of records to which the duplicate determination rule stored in the duplicate determination rule storage unit 8 is not applied. Then, it can be determined whether the user is a duplicate record.

  As described above, according to this embodiment, the duplicate record determination unit 7 is a duplicate record based on the duplicate determination rule stored in advance in the duplicate determination rule storage unit 8. It can be automatically determined whether or not.

  In addition, since the duplicate record database 9 stores a set of records determined by the duplicate record determination unit 7 as a duplicate record, the user selects a record set determined by the duplicate record determination unit 7 as a duplicate record. Can be confirmed.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a block diagram showing a configuration example of the third embodiment of the present invention.

  The configuration of the third exemplary embodiment of the present invention is the same as the configuration of the second exemplary embodiment, in which conversion word candidates are extracted from a set of records determined by the duplicate record determination unit 7 as a duplicate record. The addition of the conversion word candidate extraction unit 10 registered in the dictionary 5 is different from the configuration of the second embodiment, and the other points are the same as the configuration of the second embodiment. Therefore, the same components as those of the second embodiment are denoted by the same reference numerals as those in FIG.

  The conversion word candidate extraction unit 10 compares the record sets determined to be duplicate records by the duplicate record determination unit 7 and performs, for example, morphological analysis on the different parts, A set of words is extracted as a set of synonym candidates.

  In addition, the conversion word candidate extraction unit 10 compares the set of records that the duplicate record determination unit 7 determines to be a duplicate record, and when one record is included in the other record, A set of a portion different from the other record and a common portion is extracted as a set of omissible word candidates.

  In addition, when the extracted synonym candidate set is included in another record, the conversion word candidate extraction unit 10 sets the extracted synonym candidate set as an omissible word candidate set.

  The conversion word candidate extraction unit 10 excludes, from the synonym candidate group, the synonym candidate group constituted by a combination of other synonym candidates and omissible word candidates from the extracted synonym candidate group.

  Moreover, the conversion word candidate extraction part 10 excludes the group of the omissible word candidates contained in another synonym candidate and the omissible word candidate from the group of omissible word candidates from the group of omissible word candidates.

  The conversion word candidate extraction unit 10 refers to the conversion word dictionary 5 and selects words other than those registered in the conversion word dictionary 5 in the conversion word dictionary 5 from the set of conversion word candidates and omissible word candidates. sign up.

  Next, in this embodiment, the operation when extracting synonym candidates and omissible word candidates from the duplicate record from the name field will be described with reference to the drawings with specific examples. FIG. 9 is a flowchart for explaining the operation of the third embodiment of the present invention. FIG. 10 is an explanatory diagram illustrating an example of a set of records that the duplicate record determination unit 7 determines to be a duplicate record.

  The conversion word candidate extraction unit 10 compares the record sets determined to be duplicate records by the duplicate record determination unit 7 and performs, for example, morphological analysis on the different parts, When a word is extracted as a synonym candidate and one record is included in the other record, a different part of one record and the other record and a common part are extracted as an optional word candidate ( Step S301).

  Specifically, the conversion word candidate extraction unit 10 compares the record ID “001” and the record ID “002” illustrated in the example of FIG. 10 to obtain the record ID “001” and the record ID “002”. The different parts “Nippon NEC” and “NEC” are extracted as a set of synonym candidates.

  The conversion word candidate extraction unit 10 compares the record ID “001” and the record ID “003” shown in the example of FIG. 10, and is a different part between the record ID “001” and the record ID “003”. “NEC” and “NEC” are extracted as a set of synonym candidates.

  When the conversion word candidate extraction unit 10 compares the record ID “001” and the record ID “004” illustrated in the example of FIG. 10, the record ID “004” is included in the record ID “001”. And “NEC Nara branch” which is a common part are extracted as a set of possible word candidates.

  When the conversion word candidate extraction unit 10 compares the record ID “001” and the record ID “005” illustrated in the example of FIG. 10, the record ID “005” is included in the record ID “001”. “NEC” and “Niden Nara branch”, which is a common part, are extracted as a set of omissible word candidates.

  When the conversion word candidate extraction unit 10 compares the record ID “002” and the record ID “003” illustrated in the example of FIG. 10, the record ID “002” is included in the record ID “003”. “Niden”, and “NC Nara branch”, which is a common part, are extracted as a set of omissible word candidates.

  The conversion word candidate extraction unit 10 compares the record ID “002” and the record ID “004” shown in the example of FIG. 10, and is a different part between the record ID “002” and the record ID “004”. “NEC” and “NEC” are extracted as a set of synonym candidates.

  The conversion word candidate extraction unit 10 compares the record ID “002” and the record ID “005” shown in the example of FIG. 10, and is a different part between the record ID “002” and the record ID “005”. “NEC” and “Nichiden” are extracted as a set of synonym candidates.

  The conversion word candidate extraction unit 10 compares the record ID “003” and the record ID “004” shown in the example of FIG. 10, and is a different part between the record ID “003” and the record ID “004”. “Nikkei NEC” and “NEC” are extracted as a set of synonym candidates.

  When the conversion word candidate extraction unit 10 compares the record ID “003” and the record ID “005” illustrated in the example of FIG. 10, the record ID “005” is included in the record ID “003”. “NEC” and “Niden Nara Branch”, which is a common part, are extracted as a set of possible word candidates.

  The conversion word candidate extraction unit 10 compares the record ID “004” and the record ID “005” shown in the example of FIG. 10, and is a different part between the record ID “004” and the record ID “005”. “NEC” and “Nichiden” are extracted as a set of synonym candidates.

  Next, when the extracted synonym candidate set is included in another record, the converted word candidate extraction unit 10 sets the extracted synonym candidate set as a set of omissible word candidates (step S302). ).

  Specifically, the conversion word candidate extraction unit 10 sets the record ID “002” and the record ID “005” as a set of synonym candidates “NEC” and “Nichiden” as the record ID. Since “003” is included in “Nippon NICE Nara Branch”, a set of synonym candidates “NEC” and “Nichiden” is set as an abbreviation candidate set.

  Moreover, the conversion word candidate extraction unit 10 sets the record ID “001” as “NEC” and “Nichiden”, which are pairs of synonym candidates extracted by comparing the record ID “004” and the record ID “005”. Therefore, a set of synonym candidates “NEC” and “Nippon” and an abbreviation candidate word is used.

  Next, the conversion word candidate extraction unit 10 extracts a set of synonym candidates composed of combinations of other synonym candidates and omissible word candidates from the set of synonym candidates extracted from the set of synonym candidates. Exclude (step S303).

  Specifically, the conversion word candidate extraction unit 10 combines “NEC” and “Nippon”, which are pairs of synonym candidates extracted by comparing the record ID “004” and the record ID “005”. Since the record ID “001” and the record ID “002” are compared to form “Nippen NEC” extracted as a synonym candidate, the synonym extracted by comparing the record ID “004” with the record ID “005” The word candidate set “NEC” and “Nichiden” are excluded from the synonym candidate set.

  The conversion word candidate extraction unit 10 combines the record ID “002” with the record ID “005” and combines “NEC”, which is a set of synonym candidates extracted by comparing the record ID “005”, with the record ID “003”. And the record ID “004” are extracted as synonym candidates to form “Nippon Denshi NC”, and the set of synonym candidates extracted by comparing the record ID “002” and the record ID “005”. A certain “NEC” and “Nichiden” are excluded from the set of synonym candidates.

  The conversion word candidate extraction unit 10 excludes, from the set of omissible word candidates, the set of omissible word candidates included in other synonym candidates and omissible word candidates from the set of omissible word candidates (step S304). ).

  Specifically, the conversion word candidate extraction unit 10 compares “Nippen” and “NEC Nara Branch”, which are pairs of omissible word candidates extracted by comparing the record ID “001” and the record ID “004”. Since it includes “NEC” and “Nipponden”, which are combinations of synonym candidates extracted by comparing record ID “004” and record ID “005”, they are excluded from the omissible word candidates.

  The conversion word candidate extraction unit 10 compares the record ID “001” with the record ID “005” and extracts the optional word candidate “NEC” and “Nichiden Nara branch” with the record ID “004”. ”And record ID“ 005 ”are included, and“ NEC ”and“ Nipponden ”, which are pairs of synonym candidates extracted by comparison, are excluded from candidates for omissible words.

  The conversion word candidate extraction unit 10 compares the record ID “002” with the record ID “003”, “Nippon”, which is a set of candidate candidates that are extracted, and “NC Nara Branch” with the record ID “002”. ”And the record ID“ 005 ”are included, and“ NEC ”and“ Nichiden ”, which are pairs of synonym candidates extracted from the record ID“ 005 ”, are excluded from the omissible word candidates.

  The conversion word candidate extraction unit 10 compares the record ID “003” and the record ID “005” with each other, and “NEC” and “Nippon Nara Branch”, which are combinations of the optional word candidates, are recorded with the record ID “002”. ”And the record ID“ 005 ”are included, and“ NEC ”and“ Nichiden ”, which are pairs of synonym candidates extracted from the record ID“ 005 ”, are excluded from the omissible word candidates.

  Then, a set of synonym candidates extracted by comparing the record ID “001” and the record ID “003”, and a synonym candidate extracted by comparing the record ID “002” and the record ID “004” “NEC” and “NEC”, which are pairs of synonyms, become a set of synonym candidates.

  Also, a set of synonym candidates extracted by comparing the record ID “002” and the record ID “005”, and a synonym candidate extracted by comparing the record ID “004” and the record ID “005” “NEC” and “Nichiden” are changed to candidates for omissible words and become groups of omissible word candidates.

  The conversion word candidate extraction unit 10 refers to the conversion word dictionary 5 and selects words other than those registered in the conversion word dictionary 5 in the conversion word dictionary 5 from the set of conversion word candidates and omissible word candidates. Registration is performed (step S305).

  The conversion word candidate extraction unit 10 registers one of “NEC” and “NEC”, which is a set of synonym candidates, as a representative word in the conversion word dictionary 5. The conversion word candidate extraction unit 10 registers, for example, words in a set of synonym candidates in the conversion word dictionary 5 by using words in alphabetical order or earlier in alphabetical order or words having fewer characters as representative words. To do.

  At this time, if any of the words in the synonym candidate group has already been registered in the conversion word dictionary 5 as a representative word, the conversion word candidate extraction unit 10 selects another word in the synonym candidate group as its representative. It is registered in the conversion word dictionary 5 as a synonym for the word.

  If all the words in the synonym candidate group have already been registered in the conversion word dictionary 5 as representative words, the conversion word candidate extraction unit 10 registers any one word in the conversion word dictionary 5 as a representative word. Then, other words in the synonym candidate set are registered in the conversion word dictionary 5 as synonyms of the representative words. At this time, the conversion word candidate extraction unit 10 uses the synonym of the word already registered in the conversion word dictionary 5 as a representative word as the synonym of the word registered in the conversion word dictionary 5 as a representative word. Register with.

  When the set of omissible word candidates is not registered in the conversion word dictionary 5, the conversion word candidate extraction unit 10 newly determines a group ID and registers it as an omissible word candidate in the conversion word dictionary 5. The new group ID is, for example, a value obtained by adding 1 to the maximum value of already registered group IDs.

  The conversion word candidate extraction unit 10, when one of the sets of omissible word candidates has already been registered in the conversion word dictionary 5 as an omissible word candidate, has already converted another omissible word candidate into the conversion word dictionary 5. Are registered in the conversion word dictionary 5 with the same group ID as the omissible word candidates registered in

  The conversion word candidate extraction unit 10 does not perform the operation of registering in the conversion word dictionary 5 when all the sets of optional word candidates have already been registered in the conversion word dictionary 5 with the same group ID as the optional word candidates. The conversion word candidate extraction unit 10 determines the value of the group ID when each of the optional word candidates constituting the set of optional word candidates is already registered in the conversion word dictionary 5 as an optional word candidate with a different group ID. And the group ID value of the omissible word candidate having the larger group ID value is changed to the value having the smaller group ID.

  The conversion word candidate extraction unit 10 displays the synonym candidate or the omissible word candidate on the display unit, and selects whether or not to register in the conversion word dictionary 5 as the synonym candidate or the omissible word candidate. You may let them.

  As described above, according to this embodiment, among the words included in the record determined by the duplicate record determination unit 7 as a duplicate record, a word that meets a predetermined condition is selected as a synonym candidate or an abbreviation word. Candidates can be registered in the conversion word dictionary 5 as candidates.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described with reference to the drawings. FIG. 11 is a block diagram showing a configuration example of the fourth embodiment of the present invention.

  The configuration of the fourth embodiment of the present invention is the same as the configuration of the third embodiment except that the synonym candidate and the omissible word candidate are registered in the conversion word dictionary 5 and the duplicate record candidate is duplicated. An input / output unit 11 for confirming with the user whether or not to register in the record database 9 is added, and other components are the same as those in the third embodiment. The same reference numerals are used and the description thereof is omitted.

  The input / output unit 11 is realized by a liquid crystal display or the like as a display unit and a keyboard or the like as an input unit.

  Next, the operation of the fourth exemplary embodiment of the present invention will be described with reference to the drawings. FIG. 12 is a flowchart for explaining the operation of the fourth embodiment of the present invention.

  First, the similarity calculation unit 3 reads information registered in the database 2 (step S401).

  The similarity calculation unit 3 performs an operation similar to the operation in the first embodiment, calculates the similarity of each record set, and calculates the calculated similarity of each record set and the record for which the similarity is calculated Are output to the duplication candidate extraction unit 6 (step S402).

  For example, the duplication candidate extraction unit 6 performs the same operation as that in the first embodiment, and extracts duplicate record candidates from the database 2 (step S403).

  The duplicate record determination unit 7 performs the same operation as the operation in the second embodiment, determines whether or not the duplicate record candidate extracted by the duplicate candidate extraction unit 6 is a duplicate record (step S404). Duplicate record candidates determined to be records are stored in the duplicate record database 9.

  The conversion word candidate extraction unit 10 performs the same operation as the operation in the third embodiment, and from the records determined by the duplicate record determination unit 7 as duplicate records, synonym candidates and omissible word candidates (hereinafter, referred to as “candidate word candidates”). (Simply referred to as a conversion word candidate) is extracted (step S405).

  When the conversion word candidate extraction unit 10 extracts the conversion word candidate, the conversion word candidate extraction unit 10 outputs the extracted conversion word candidate to the input / output unit 11. The input / output unit 11 displays the conversion word candidate input by the conversion word candidate extraction unit 10 and allows the user to determine whether or not the conversion word candidate is a conversion word.

  When the user operates the input / output unit 11 and determines that the conversion word candidate is a conversion word, the conversion word candidate extraction unit 10 registers the conversion word candidate in the conversion word dictionary 5 (step S406).

  When the conversion word candidate extraction unit 10 registers the conversion word candidate in the conversion word dictionary 5, the duplication candidate extraction unit 6 performs the same operation as the operation in the first embodiment, and extracts the duplicate record candidate from the database 2. (Step S403). This is because when a new conversion word is registered in the conversion word dictionary 5, a record that is newly determined as a duplicate record may occur.

  When the conversion word candidate extraction unit 10 finishes extracting conversion word candidates, or when the user operates the input / output unit 11 to reject the determination of whether or not the conversion word candidate is a conversion word, a duplicate record The determination unit 7 outputs the duplicate record candidate that has not been determined to be a duplicate record to the input / output unit 11. The input / output unit 11 displays the duplicate record candidate input by the duplicate record determination unit 7 and causes the user to determine whether or not the duplicate record candidate is a duplicate record (step S407). The duplicate record determination unit 7 outputs the duplicate record candidates to the input / output unit 11 in the order of the number of combinations of records that may be duplicated among the duplicate record candidates that have not been determined to be duplicate records. May be.

  When the user operates the input / output unit 11 to determine that the duplicate record candidate is a duplicate record, the duplicate record determination unit 7 determines that the duplicate record candidate is a duplicate record and registers it in the duplicate record database 9. (Step S408).

  When the duplicate record determination unit 7 registers the duplicate record candidate in the duplicate record database 9, the conversion word candidate extraction unit 10 performs the same operation as that in the third embodiment, and the duplicate record determination unit 7 A conversion word candidate is extracted from the record determined to be (step S405). This is because when the number of duplicate records increases, a conversion word candidate may be newly extracted from the increased duplicate records.

  The duplicate record determination unit 7 outputs all the duplicate record candidates that have not been determined to be duplicate records to the input / output unit 11, or the user operates the input / output unit 11 to reject the determination of a duplicate record candidate. Then, the conversion word candidate extraction unit 10 performs the same operation as the operation in the third embodiment, and extracts conversion word candidates from the record that the duplicate record determination unit 7 determines to be a duplicate record (step S405). ).

  When the conversion word candidate extraction unit 10 performs the same operation as the operation in the third embodiment and ends the operation of extracting conversion word candidates from the record that the duplicate record determination unit 7 determines to be a duplicate record, all The component ends the operation.

  As described above, according to this embodiment, the number of confirmations with the user can be reduced in order to detect duplicate records.

  In addition, when the user determines that the conversion word candidate is a conversion word, the conversion word candidate can be extracted from a new duplicate record that has increased.

  Furthermore, a conversion word candidate can be extracted from the new duplicate record increased when the user determines that the duplicate record candidate is a duplicate record.

  When there are a plurality of duplicate record candidates that are not determined to be duplicate records, the duplicate record determination unit 7 may output the duplicate record candidates with the largest number of words to the input / output unit 11 in order. Then, in order that the conversion word candidate extraction unit 10 is likely to extract conversion word candidates, duplicate record candidates are output to the input / output unit 11 to determine whether the user is a duplicate record. When the extraction unit 10 extracts many conversion word candidates from the duplicate record candidates, it is less likely that the conversion word candidate extraction unit 10 extracts the conversion word candidates from the duplicate record candidates with a small number of words. The number of times of confirmation with the user for detecting duplicate records can be reduced.

  If the conversion word candidate extraction unit 10 determines that a plurality of conversion word candidates are conversion words, the conversion word candidate extraction unit 10 outputs the plurality of conversion words determined by the user to the similarity calculation unit 3, and the similarity calculation unit 3 converts corresponding records in the database 2 according to a plurality of conversion words determined by the user, and the duplicate candidate extraction unit 6 may extract a set of duplicate record candidates based on the converted records. . Then, the duplicate record determination unit 7 inputs the duplicate record candidates in the descending order of the number of duplicate record candidates constituting the duplicate record candidate set among the duplicate record candidate sets extracted by the duplicate candidate extraction unit 6. May be output.

  When the user determines that a plurality of duplicate record candidates are duplicate records, the duplicate record determination unit 7 outputs the duplicate record candidate determined by the user to be a duplicate record to the conversion word candidate extraction unit 10, The candidate extraction unit 10 may output conversion word candidates extracted from duplicate record candidates having a large number of extracted conversion word candidates to the input / output unit 11 in order.

Embodiment 5. FIG.
A fifth embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a block diagram showing a configuration example of the fifth embodiment of the present invention.

  The configuration of the fifth embodiment of the present invention is the same as the configuration of the fourth embodiment of the present invention, except that one record among the records constituting the set of duplicate records registered in the duplicate record database 9 is recorded. Except for this, a duplicate record deletion unit 12 that deletes other records from the database 2 is added, and the other components are the same as those in the fourth embodiment. Reference numerals are assigned and description is omitted.

  The duplicate record deletion unit 12 outputs a set of duplicate records registered in the duplicate record database 9 to the input / output unit 11 to cause the user to select a record to be deleted, and deletes the record selected by the user from the database 2 May be. In addition, the duplicate record deletion unit 12 may delete records other than the record with the smallest record ID value from the database 2 from the set of duplicate records registered in the duplicate record database 9.

  The duplicate record deletion unit 12 may store a record of the deleted record.

  As described above, according to this embodiment, the duplicate record determination unit 7 registers the duplicate record determined to be a duplicate record based on the duplicate record determination rule in the duplicate record database 9. Since it deletes from the database 2 via the duplicate record deletion part 12, the record which a user deletes can be confirmed or the record of the deleted record can be memorize | stored.

Embodiment 6 FIG.
A sixth embodiment of the present invention will be described with reference to the drawings. FIG. 14 is a block diagram showing a configuration example of the sixth embodiment of the present invention.

  The configuration of the sixth embodiment of the present invention is registered in the database 2 and the database registration unit 13 for inputting information to be newly added to the database 2 by the user in the configuration of the third embodiment. A search unit 14 that searches for information and a search fee calculation unit 15 that calculates a fee charged to the user are added, and the other components are the same as those in the third embodiment, and thus other components Elements are denoted by the same reference numerals as those in FIG.

  When the user newly inputs information to be added to the database 2, the database registration unit 13 overlaps with the information input by the user based on the synonyms and omissible words registered in the conversion word dictionary 5. Records that may be information are displayed on the display unit.

  For example, when the information shown in the example of FIG. 2 is registered in the database 2 and the information shown in the example of FIG. 3 is registered in the conversion word dictionary 5, the user enters the name “Japan” in the database registration unit 13. Enter the information for “Nara Denki Branch”.

  Then, the database registration unit 13 decomposes the “NEC branch” into the words “NEC” and “Nara branch” using a method such as morphological analysis on the input “NEC branch”. .

  Then, the database registration unit 13 refers to the synonym dictionary 5 and extracts synonyms and abbreviations of “NEC” and “Nara branch”. Since the synonym that is a representative word of “NEC” is “NEC”, the database registration unit 13 extracts “NEC”. Further, the database registration unit 13 extracts “NEC” which is a synonym having “NEC” as a representative word.

  Furthermore, the database registration unit 13 refers to the synonym dictionary 5 and extracts any of the abbreviations “NEC”, “NEC”, and “NEC”. Specifically, “Nichiden” is extracted as an abbreviation of “NEC”.

  And the database registration part 13 produces | generates the information which may have transformed from the information which the user input by combining the word extracted from the synonym dictionary 5, and the word of the information which the user input. Specifically, “NEC Nara Branch,” “NEC Nara Branch,” “Nippen NEC Nara Branch,” “Nippon NUC Nara Branch,” “NEC Nichiden Nara Branch,” “NEC Niden Nara Branch,” “Nippon Nara Branch” And so on.

  The database registration unit 13 searches the database 2 for information that matches the generated information and extracts information that matches from the database 2. Then, the record ID “001”, the record ID “002”, and the record ID “003” illustrated in the example of FIG. 2 are extracted.

  The database registration unit 13 displays each extracted record on the display unit as a record that may be duplicated.

  The search unit 14 performs an operation similar to the operation of the database registration unit 13 described above, and information that the user inputs as a search key from the database 2 to the search unit 14 and information that may be transformed from the information. Is displayed on the display unit as a search result.

  The search fee calculation unit 15 calculates a predetermined fee charged to the user when the search unit 14 displays the search result on the display unit. If the user pays the database 2 owner or administrator to use the database 2, the search fee calculator 15 calculates the fee charged to the database 2 owner or administrator. May be.

  As described above, according to this embodiment, when a user registers information in the database 2, information that may be duplicated is presented to the user. It can prevent becoming a record.

  Further, since the search unit 14 searches for information registered in the database 2 and the search fee calculation unit 15 calculates a fee according to the information search performed by the search unit 14, the duplicate record detection system 20 has The person can charge the user or the owner or administrator of the database 2 for the fee.

Embodiment 7 FIG.
A seventh embodiment of the present invention will be described with reference to the drawings. FIG. 15 is a block diagram showing a configuration example of the seventh embodiment of the present invention.

  The configuration of the seventh embodiment of the present invention is the same as the configuration of the fifth embodiment, except that the fee charged to the owner of the database 2 or the like according to the information deleted from the database 2 by the duplicate record deletion unit 12. The deletion fee calculation unit 16 to be calculated is added, and the other components are the same as those in the fifth embodiment. Therefore, the other components are denoted by the same reference numerals as those in FIG.

  The duplicate record deletion unit 12 performs the same operation as that in the fifth embodiment, and deletes the duplicate record from the database 2.

  The deletion fee calculation unit 16 calculates a fee charged to the owner or administrator of the database 2 according to the information deleted from the database 2 by the duplicate record deletion unit 12.

  As described above, according to this embodiment, it is possible to charge the owner or manager of the database 2 for a charge corresponding to the deletion of the duplicate record registered in the database 2.

  The owner of the duplicate record detection system 20 may input information registered in another database to the duplicate record detection system 20 and cause the duplicate record deletion unit 12 to delete the information. Then, since the conversion word candidate extraction unit 10 registers the conversion word in the conversion word dictionary 5, it is possible to improve the determination accuracy of the duplicate record by the duplicate record determination unit 7. Therefore, for example, in the fourth embodiment, it is possible to reduce the number of times the user determines whether or not the duplicate record candidate is a duplicate record.

  The present invention can be applied to a system that extracts information that is registered redundantly in a database.

It is a block diagram explaining the example of 1 structure of the 1st Embodiment of this invention. It is explanatory drawing which shows the example of the information registered into the database. It is explanatory drawing which shows the example of the information registered into the conversion word dictionary. It is a flowchart explaining the operation | movement of the 1st Embodiment of this invention. It is a block diagram which shows one structural example of the 2nd Embodiment of this invention. It is explanatory drawing which shows the example of a duplication determination rule. It is explanatory drawing which shows the example of the duplication determination rule which the duplication determination rule memory | storage part has memorize | stored. It is a block diagram which shows one structural example of the 3rd Embodiment of this invention. It is a flowchart explaining the operation | movement of the 3rd Embodiment of this invention. It is explanatory drawing which shows the example of the group of the record which the duplicate record determination part determined with it being a duplicate record. It is a block diagram which shows one structural example of the 4th Embodiment of this invention. It is a flowchart explaining the operation | movement of the 4th Embodiment of this invention. It is a block diagram which shows one structural example of the 5th Embodiment of this invention. It is a block diagram which shows one structural example of the 6th Embodiment of this invention. It is a block diagram which shows one structural example of the 7th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Memory | storage part 2 Database 3 Similarity calculation part 4 Database information input part 5 Conversion word dictionary 6 Duplicate candidate extraction part 7 Duplicate record determination part 8 Duplication determination rule memory | storage part 9 Duplicate record database 10 Conversion word candidate extraction part 11 Input / output part 12 Duplicate record deletion unit 13 Database registration unit 14 Search unit 15 Search fee calculation unit 16 Delete fee calculation unit 20 Duplicate record detection system

Claims (18)

A conversion word storage unit for storing a conversion word corresponding to the word;
A word used in information registered in a database holding a plurality of records composed of a plurality of information is converted into a conversion word stored in the conversion word storage unit, and the similarity between the records is determined. A similarity calculation unit to calculate,
A duplicate record detection system comprising: a duplicate candidate extraction unit that extracts a duplicate record candidate that is a combination of records in which the similarity calculated by the similarity calculation unit is equal to or greater than a predetermined value. The conversion word storage unit stores synonyms as conversion words,
The duplicate record detection system according to claim 1, wherein the similarity calculation unit calculates a similarity between records by converting a word used in information registered in the database into a corresponding synonym. The conversion word storage unit stores an optional word that is an optional word as a conversion word,
The duplicate record detection according to claim 1, wherein the similarity calculation unit calculates a similarity between records by adding a corresponding optional word to a word used in information registered in the database. system. Comprising a database information input unit that configures a database record and inputs field information that is a unit in which information registered in the database record is delimited;
The similarity calculation unit calculates a similarity between fields based on the information on the field input to the database information input unit, and calculates a similarity between records using the calculated similarity between the fields. The duplicate record detection system according to any one of claims 1 to 3, wherein calculation is performed. A duplicate determination rule storage unit that stores a duplicate determination rule that is a rule for determining whether or not the duplicate record candidate extracted by the duplicate candidate extraction unit is a duplicate record that is a combination of records of the same content information;
The duplication record determination part which determines whether the said duplication record candidate is the said duplication record based on the said duplication judgment rule which the said duplication judgment rule memory | storage part has memorize | stored is included. The duplicate record detection system according to any one of the above. The duplicate record detection system according to claim 5, further comprising a conversion word candidate extraction unit that extracts a conversion word candidate that is a conversion word candidate from the record that the duplicate record determination unit determines to be a duplicate record. The duplicate record detection system according to claim 6, wherein the conversion word candidate extraction unit extracts, as extracted synonym candidates, synonym candidates, which are synonym candidates, from the extracted conversion word candidates. When one record of the duplicate record is included in the other record of the duplicate record, the conversion word candidate extraction unit, the difference between the one record and the other record, and the one record and the other record The duplicate record detection system according to claim 7, wherein portions having common records are extracted as omissible word candidates that are omissible word candidates that are omissible words. The duplicate record detection system according to claim 8, wherein the conversion word candidate extraction unit changes the synonym candidate to an abbreviation-candidate word if any of the extracted synonym candidates is included in another record. The conversion word candidate extraction unit excludes, from the synonym candidates, synonym candidates composed of other synonym candidates and combinations of omissible word candidates from the extracted synonym candidates. Record detection system. The duplicate record according to claim 10, wherein the conversion word candidate extraction unit excludes, from the omissible word candidates, synonym candidates and omissible word candidates included in other omissible word candidates. Detection system. The duplicate record detection system according to claim 11, wherein the conversion word candidate extraction unit stores the synonym candidate as a synonym in the conversion word storage unit, and stores the optional word candidate as an optional word in the conversion word storage unit. Including an input / output unit that outputs a duplicate record candidate and a conversion word candidate, and a user inputs a determination as to whether the duplicate record candidate is a duplicate record and whether the conversion word candidate is a conversion word; ,
The duplicate record determination unit outputs the duplicate record candidates to the input / output unit in order of decreasing the number of duplicate record candidates to be output to the input / output unit,
The conversion word candidate extraction unit outputs the conversion word candidates to the input / output unit in an order in which the number of conversion word candidates to be output to the input / output unit decreases. Duplicate record detection system. The duplicate record determination unit outputs the duplicate record candidates to the input / output unit in descending order of the number of records constituting the duplicate record candidate among the duplicate record candidates that have not been determined to be duplicate records. Duplicate record detection system. The duplicate record determination unit outputs the duplicate record candidate that has not been determined to be a duplicate record to the conversion word candidate extraction unit,
The duplicate record detection system according to claim 13 or 14, wherein the conversion word candidate extraction unit sequentially outputs the conversion word candidates extracted from the duplicate record candidates having a large number of extracted conversion word candidates to the input / output unit. A duplicate record database that stores a combination of records determined by the user via a duplicate record determination unit or an input / output unit as a duplicate record;
The duplicate record deletion part which deletes records other than one record from a database among the records which comprise the combination of the record which the said duplicate record database has memorized. Any one of Claims 13-15. The described duplicate record detection system. Information consisting of words converted from the words of information input by the user to be registered in the database into conversion words stored in the conversion word storage unit or words that match the input information words A database registration unit that extracts records including
The duplicate record detection system according to claim 1, further comprising: a display unit that displays the records extracted by the database registration unit. On the computer,
Converting a word used in information registered in a database holding a plurality of records composed of a plurality of information into a conversion word stored in a conversion word storage unit that stores a conversion word corresponding to the word , Similarity calculation processing for calculating the similarity between the records,
A duplicate record detection program for executing a duplicate candidate extraction process for extracting a duplicate record candidate that is a combination of records in which the similarity calculated in the similarity calculation process is a predetermined value or more.

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