KR100864167B1 - Knowledge Based Ontology Context Management Apparatus and Method in Ubiquitous Environment - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an apparatus and method for managing knowledge-based ontology context in a ubiquitous environment.

2. The technical problem to be solved by the invention

The present invention is to store and manage a variety of information representing each user, device, service, time, space and policy in a hierarchical class form in a knowledge-based multi-home network system of the ubiquitous environment, Knowledge of the ubiquitous environment to facilitate handling of time, space, peripheral devices, availability of services, conflicts or security with other users of the service, and policy level verification in response to a request or query of a user's service. Its purpose is to provide an underlying ontology context management device and method thereof.

3. Summary of Solution to Invention

According to the present invention, in a knowledge-based ontology context management apparatus of a ubiquitous environment, various types of information related to a service may be classified into a "first class section, a policy class, an event class, and a user class, a device class, a session class, and a space class. It is divided into a time class and located in a lower layer than the first class part, wherein the policy class is connected to the user class and the spatial class, respectively, to provide interrelation, and the event class and the time class are connected to the session class. An ontology for classifying a second class part and a third class part located in a lower hierarchy than the second class part and connected to the first class part to provide corresponding basic data, and storing them in a hierarchical class form; A loader for loading a context (document) stored in a hierarchical class form in the ontology; A parser for parsing the context (document) loaded by the loader to check relationships between classes; And an ontology handler for adding / deleting / searching the context to the ontology in the form of a class in consideration of the relationship with other classes.

4. Important uses of the invention

The present invention is used for ontology management.

Home network system, knowledge base, ontology, context management, class, hierarchical class

Description

Apparatus and Method for managing ontology context based on knowledge in Ubiquitous}

1 is a configuration diagram of an apparatus for managing knowledge-based ontology context in a ubiquitous environment according to the present invention;

Figure 2 is an embodiment overall configuration diagram of an ontology model according to the present invention,

3 is an exemplary view of a user related ontology model according to the present invention;

4 is an exemplary view of a device-related ontology model according to the present invention;

5 is an exemplary diagram of a session related ontology model according to the present invention;

6 is an exemplary view of a subtask related ontology model according to the present invention;

7 is an exemplary view of a space related ontology model according to the present invention;

8 is an exemplary view of a policy related ontology model according to the present invention;

9 is an exemplary view of a service related ontology model according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: ontology 12: loader

13: Parser 14: Ontology Manager

The present invention relates to an apparatus and method for managing knowledge-based ontology context in a ubiquitous environment, and more particularly, to various information representing each user, device, service, time, space, and policy in a knowledge-based multi-home network system in a ubiquitous environment. Is stored and managed in the form of interrelated hierarchical classes, and according to user's request or query for service, time, space, peripheral device, service provision, conflict with other users for service, The present invention relates to an apparatus and method for managing knowledge-based ontology context in a ubiquitous environment to easily handle security and policy level verification.

With the advent of the ubiquitous era, simply storing information cannot provide efficient services that users demand in various environments and spaces.

Therefore, there is a need to provide services dynamically through information that has a mutual relationship by organically binding and managing each piece of information. This requires information management in a ubiquitous environment with an extended concept, not just in one home.

Meanwhile, CoBrA (Context Broker Architecture), which is a conventional context model, has been developed to target a broker agent that manages a context sharing model for all computing entities existing in an intelligent space. Standard Ontology for Ubiquitous and Pervasive Applications was developed with the goal of a common ontology supporting the ubiquitous computing environment.

In addition, ACAI (Agent-Based Context-aware Infrastructure) is implemented in the form of ontology for expressing context and meta context information for the purpose of context awareness and application system implementation, and Service Oriented Context-Aware Middle ware solves the problems associated with semantic-based context representation, inference and knowledge sharing of various forms of context, and the classification and interdependence of contexts, enabling developers to develop context-aware service systems more effectively. Was developed for.

However, this conventional context model has the following vulnerabilities as a realistic model for actual home network service provision.

☞ There is no context model considering the application of security and policy according to the situation.

Lack of a policy management model other than privileges and existing priorities for policy.

☞ The absence of a management model that applies different services to users.

☞ Various instance parts according to the expansion of user and location information based on multi home.

☞ No detailed management plan through expansion of user and device.

☞ There is no model of information composition and management plan about available services.

☞ Saving / management of user information, dynamic update of information and lack of linkage with database.

As a result, the conventional context management apparatus uses a context model that is simply stored without systematic classification / association in providing a multi-home network service, and thus it is difficult to extend a service according to location expansion, and to provide multiple services for multiple users. There is a problem that can not provide a home network service dynamically.

The present invention has been proposed to solve the above problems, and in a knowledge-based multi-home network system of a ubiquitous environment, a hierarchical class having a correlation between various information representing each user, device, service, time, space, and policy In the form of Class), it is easy to handle time, space, peripheral device, service provision, conflict with other users, security, and policy level verification according to user's request or query. The purpose of the present invention is to provide an apparatus and method for managing knowledge-based ontology context in a ubiquitous environment.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In the apparatus of the present invention for achieving the above object, in the knowledge-based ontology context management apparatus of a ubiquitous environment, various types of information related to a service are classified into a "first class unit divided into a user class, a device class, a session class, and a spatial class. And divided into a policy class, an event class, and a time class, and located in a lower layer than the first class unit, wherein the policy class is connected to the user class and the spatial class, respectively, to provide interrelation and provide the event class and the time. A class is classified into a second class part connected to the session class and a third class part located in a lower hierarchy than the second class part and connected to the first class part to provide corresponding basic data. Ontology for storage; A loader for loading a context (document) stored in a hierarchical class form in the ontology; A parser for parsing the context (document) loaded by the loader to check relationships between classes; And an ontology manager for adding / deleting / searching the context in the form of a class in consideration of the relation of the context with other classes.

On the other hand, the method of the present invention, in the knowledge-based ontology context management method of the ubiquitous environment, the ontology is divided into a variety of information related to the service, "the first class unit divided into a user class, device class, session class and spatial class, It is divided into a policy class, an event class and a time class, and is located in a lower layer than the first class unit, wherein the policy class is connected to the user class and the spatial class, respectively, to provide interrelationships. A second class part connected to the session class and a third class part located in a lower hierarchy than the second class part and connected to the first class part to provide corresponding basic data, and stored in a hierarchical class form. step; Loading a context (document) stored in the form of a hierarchical class; Parsing the loaded context (document) to check relationships between classes; And managing a context in the form of a hierarchical class stored in the ontology.

In addition, the present invention processes the input value from the multi-home by applying a class based on the location extension in the multi-home to increase the efficiency of service management through the expansion and application of security and policy parts in the ubiquitous environment It manages and ensures extension / management of people and devices for service implementation in multihomed.

In addition, the present invention implements a location-dependent ontology model based on device and user for knowledge service to protect knowledge sharing, context reasoning, interoperability and user privacy. It provides an ontology-based context model for.

In addition, the present invention is based on the expansion of the service space (Space) for the application of multiple homes, and provides a variety of services and profiles for each user and the expansion of the ontology and multi-user and interrelationship.

In addition, the present invention provides an appropriate service for each user through the expansion of policy management and security enhancement for the service in the multi-user and multi-home.

In addition, the ontology model in the present invention is not a means for storing information of a simple database (DB) concept, but may be stored / managed in the form of classes considering organic relations, thereby providing a variety of information storage / management and services. Make sure

That is, the information about the user is a series of information about the spatial location of the user, the devices available nearby, information about the current time and conflicts, priorities and security levels with other users, availability of various services and a list of services Are interconnected as data.

Therefore, with simple information such as the user's location movement detection from outside or the user's service request, the organic ontology information is extracted to efficiently provide the service.

In addition, the ontology model in the present invention has a relationship not to a single home, but to multiple homes, and provides a service or information between users based on a security level for a home to which a mutual relationship is established. Provides mobility in an enlarged space

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an apparatus for managing knowledge-based ontology context in a ubiquitous environment according to the present invention.

As shown in FIG. 1, the apparatus for managing knowledge-based ontology context in the ubiquitous environment according to the present invention is a variety of information representing a user, a device, a service, a time, a space, and a policy in a form of interrelated classes. Ontology 11 for storing, a loader 12 for loading a context (document) stored in a class form in the ontology 11, an ontology context (loaded by the loader 12) Parser 13 for parsing documents and checking grammatical / contextual errors between classes, and adds contexts to the ontology 11 in the form of classes in consideration of their relationship with other classes. Ontology Handler 14 for deletion / retrieval.

In addition, the query handler converts / manages the data into a form of data that can be recognized by an internal module when an ontology connection, model information, and meta information is requested from the outside.

In addition, the translator converts the ontology model format in various ways. That is, the ontology information corresponding to the query is converted into a data type that can be recognized by the corresponding external module.

In addition, the model controller manages changes and queries of various models for queries and modification of information.

On the other hand, referring to the operation of the inference device of the home network system to which the present invention is applied, first, when the location information is input as the user moves the location, the ontology context management device modifies the location information (position sensor) existing in the ontology. At this time, the change of the location information is stored as information indicating the user's movement of the space, tied to the concept of space, and the inference apparatus determines whether to stop the existing service or provide a new service according to the user's movement. Check based on user profile and service information.

As a result of the inspection, the current time information and the state of the device and the device operation used for the service are displayed according to the device existing in the current space.

Eventually, the ontology management device uses the policy and event classes to control the device and provide information, and the user's priority, service priority, conflict with other users, security according to service provision, review of device control rights, and It improves the efficiency of service by organically managing the context for deciding whether to extract various required information.

Hereinafter, the ontology 11 will be described in more detail with reference to FIG. 2.

As shown in FIG. 2, the ontology 11 enhances the efficiency of the knowledge-based service by specifying the relationship between each class and the entity through the 'hierarchical class'.

The ontology 11 stores various types of information required for a user and time, space, device, service, and service in the form of classes having a mutual relationship.

That is, the user class provides information about the current location of the user, where he or she lives, and the moved spatial information through a relationship with the spatial class.

In addition, the space class provides list information of a device (device) and a sensor included in the space in association with a class for the device. In this case, the spatial class may provide a list of devices that can be provided by the user in association with the user class.

In addition, the device class provides a list of devices required for the service in association with the service class, and the service class provides service and user preference service information that can be provided by the user in association with the user class.

After all, the user class provides information to manage the dynamic service of each user according to time and space in association with the time class, space class, and service class.

At this time, the lower information (Music, Movie, Attribute, Service, Meal, Goods) provides the corresponding information as needed in association with the class of the user, device, space, and service of the upper layer.

Looking at the application of such ontology 11, the reasoning engine (Reasoner) in accordance with the user's movement or service request through the interface controller (Interasoner) inference process for setting the appropriate service from the user authentication process and delivery information Do this.

In this process, the inference engine refers to user information (basic information and preference environment and user profile) stored in the ontology 11. At this time, the user stores basic information in the ontology 11, and has a separate device-related ontology related to the external environment and service provision, thereby providing a service suitable for the management of various information and the situation through the interworking of those in an organic relationship. Can be provided.

In addition, the inference engine continuously manages space movement for each user, and assigns a grade related to each information, user, and device to prepare for a collision situation that may occur in the process of providing a service through interworking with other ontology.

At this time, the configuration suitable for the actual home network and the expansion of the inference step can be linked with the ontology to be extended later to increase the recyclability of the ontology.

As a result, the inference engine solves the difficulty of defining relationships among entities in providing home network services through hierarchical ontology knowledge-based context model by extending the configuration and reasoning stages that are applied to the actual home network. Improves recyclability and reusability over existing database (DB) models.

In addition, when the inference engine recognizes a collision between a user, a service, and a device, the inference engine controls the device against a user's access to a device and a service through information about the priority and time organically tied to the user, a service, or a device. It is possible to flexibly manage the priority of services, priority between services, and flexible management of services specified by users.
Hereinafter, the ontology structure as shown in FIG. 2 will be described in more detail.
Ontology according to the present invention, as clearly shown in Figure 2, a variety of information related to the service, "first class unit 21 divided into a user class, device class, session class and space class; It is divided into policy class, event class, and time class, and is located in lower hierarchy than the first class part, but policy class is connected to user class and space class respectively to provide interrelationship, and event class and time class are connected to session class. Two class portions 22; The storage is classified into a third class part 23 which is located in a lower hierarchy than the second class part and is connected to the first class part and provides corresponding basic data.
That is, the ontology according to the present invention stores various information related to the service in the form of a hierarchical class.
Looking at the ontology structure of Figure 2, the ontology according to the present invention comprises a plurality of hierarchical class (21 to 23).
Here, as illustrated in FIG. 2, the first class unit 21 includes classes divided into user classes, device classes, session classes, and spatial classes, and subclasses thereof (for example, user classes). Profile, user policy, etc.), and the classes are not directly connected.
Meanwhile, as shown in FIG. 2, the second class unit 22 is divided into a policy class, an event class, and a time class, and is located in a lower hierarchy than the first class unit 21, but the policy class is a user class. The and classes are connected to each other to provide interrelation, and the event and time classes are linked to the session class.
Meanwhile, as shown in FIG. 2, the third class unit 23 is located in a lower hierarchy than the second class unit 22 and is connected to the first class unit 21 to provide corresponding basic data.

3 is an exemplary view of a user related ontology model according to the present invention.

As shown in FIG. 3, a user-related ontology according to the present invention provides user information as a service request and sensor data from a service user are input. In this case, the user information includes basic information and preference information of the user.

Accordingly, the user-related ontology may provide a user preference environment or a customized service through interworking with a device-related ontology.

In addition, the ontology related to the user has an extended property such as each detailed location information and a preferred product, food, movie, music, etc. according to the user extension, so that the security level of the user profile can be set.

4 is an exemplary view of a device-related ontology model according to the present invention.

In general, the ontology manager 14 updates the corresponding data of the sensor ontology as the sensor data is input, and updates the personal-related ontology and the space ontology according to the organic relationship between the classes.

As shown in FIG. 4, a device-related ontology according to the present invention provides a list of necessary devices according to a user location in association with a user-related ontology, and provides necessary service configuration information in association with a session-related ontology. It provides a list of devices required to provide specific preferences or customized services based on the user profile in connection with user-related ontologies.

In addition, the device-related ontology is mapped to devices according to places, and includes an actual device (device) address in consideration of user-centered devices such as PDAs (Personal Digital Assistants) and additional devices.

5 is an exemplary diagram of a session related ontology model according to the present invention.

As shown in FIG. 5, the session-related ontology provides information necessary for providing a service according to a new data input in association with a user-related ontology and a device-related ontology in order to provide a service most suitable for the current situation.

Policies such as priority checks for possible conflicts between users and services, privacy of the output information, and device access levels to check whether the service user has permission to control the device, Policy) Check is performed.

To this end, it supports clear policy configuration for conflicts between devices or users required for service provision, including priority among tasks and user information, and also provides a relationship to store / manage the information necessary for service configuration. And properties.

Meanwhile, as shown in FIG. 6, a subtask-related ontology is provided to configure detailed service contents of a service configured through a session-related ontology and a task.

Here, the subtask-related ontology provides a relationship between a mapping device and a location and a person according to the static patterned service.

7 is an exemplary view of a space related ontology model according to the present invention.

As shown in FIG. 7, the space-related ontology provides information for continuously managing the user's space movement through interworking with a user-related ontology and a device-related ontology, thereby providing a home. The network system checks whether the service is stopped or starts a new service with reference to user preference information, profile, and service information.

As a result, the space-related ontology associated with the user-related ontology and the device-related ontology enables the temporal and spatial configuration to provide a customized service to the user.

Such a space-related ontology is a model for classifying and managing home network spaces, and in consideration of scalability, users and devices are mapped according to each location such as city, county, town, and call.

8 is an exemplary view of a policy related ontology model according to the present invention.

As shown in FIG. 8, when determining a service to be provided to a user through a session-related ontology, the policy-related ontology provides information for configuring a service most suitable for the current situation.

Such policy-related ontology enables the implementation and application of the service according to the situation, the profile of the security, the scope of the service, and the dynamic adjustment in consideration of security, priority, and authority transfer.

In addition, policy-related ontologies allow conflict resolution to be applied in a variety of ways as needed, rather than prioritizing resolving conflicts in a conflict situation.

9 is an exemplary view of a service related ontology model according to the present invention.

As shown in FIG. 9, as the service determined through the session-related ontology is registered, the service-related ontology provides the user with specific service contents of the task-related ontology and the subtask-related ontology.

In addition, service-related ontology has separate basic data ontology such as Movie, Music, Meal, etc., and attaches it to user, space, work-related ontology, etc. To make it easier to provide.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail. That is, the present invention provides a computer-readable recording medium recording a knowledge-based ontology structure of a ubiquitous environment as shown in FIG. 2.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention stores and stores various information representing each user, device, service, time, space, and policy in a hierarchical class form in a ubiquitous environment. By managing, it is possible to easily handle time, space, peripheral device, service provision, conflict with other users, security, and policy level verification according to user's request or query. .

In addition, the present invention has the effect of increasing the efficiency of service management through security and policy application according to the situation that can occur in the ubiquitous environment multi-home.

In addition, the present invention reinforces the security function for information leakage to other homes and outside through the application of security and policy in the multi-home, to increase the efficiency of management by organizing the information on the available services of the user into a service class It can be effected.

In addition, the present invention has the effect of providing the base of the actual service implementation by providing the expandability as a ubiquitous network service model by increasing the convenience of dynamic modification and management according to the environmental sensor value.

Claims (16)

delete In the knowledge-based ontology context management device of the ubiquitous environment, Various information related to the service may be located in a lower layer than the first class part by being divided into a first class part divided into a user class, a device class, a session class, and a space class, and a policy class, an event class, and a time class. The policy class is connected to the user class and the spatial class, respectively, to provide interrelation, and the event class and the time class are located in a lower layer than the second class part, and connected to the session class. An ontology connected to the first class unit and classified into a third class unit providing corresponding basic data and stored in a hierarchical class form; A loader for loading a context (document) stored in a hierarchical class form in the ontology; A parser for parsing the context (document) loaded by the loader to check relationships between classes; And Ontology Handler (Ontology Handler) to add / delete / search in the form of class considering context with other classes in the ontology Knowledge-based ontology context management device of the ubiquitous environment comprising a. The method of claim 2, The first class unit, The knowledge-based ontology context management device of the ubiquitous environment, characterized in that the classes are not directly connected. delete delete The method of claim 2, The policy class is At least one or more of a space (user's location), peripheral device, time information, priority, collision with other users, security level, service availability, or service list related to the user. Knowledge-based ontology context management device in ubiquitous environment. delete In knowledge-based ontology context management method of ubiquitous environment, Ontology stores various types of information related to the service in a lower hierarchy than the first class section divided into a first class section divided into a user class, a device class, a session class, and a space class, and a policy class, an event class, and a time class. A second class portion, wherein the policy class is respectively connected to the user class and the spatial class to provide interrelationships, and wherein the event class and the time class are connected to the session class; A third class unit located at and connected to the first class unit to provide corresponding basic data, and stored in a hierarchical class form; Loading a context (document) stored in the form of a hierarchical class; Parsing the loaded context (document) to check relationships between classes; And Managing context in the form of a hierarchical class stored in the ontology Knowledge-based ontology context management method of ubiquitous environment, including. delete delete The method of claim 8, The policy class is At least one or more of a space (user's location), a peripheral device, time information, a priority, a conflict with another user, a security level, a service availability, or a service list associated with a user. Knowledge-based ontology context management method in ubiquitous environment. delete delete delete delete delete

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