Prachi Hande

- Developing a distributed version of a game called Tetris. Enhancements to the existing game using efficient multicasting(using spanning trees), synchronization with partially shared states, and real time communication.
- Support for multiple concurrent multi-player games.

- Implemented a collaborative filtering system for predicting movie recommendations for a user. Optimized the algorithm with different rating-prediction metrics based on the k-Nearest Neighbors (kNN) learning algorithm
- It was an individual assignment, and I had to come up with the best optimization which will reduce RMSE value of results to its maximum. It was a good experience working on a real dataset

Project included implementing the following as enhancements to the Linux kernel :
1) Admission control based on top of Response Time test and resource reservation using budget and time period as task properties (Rate Monotonic Scheduling)
2) Implementation of power managements algorithms - SysClock (single core and multi-core), PM-clock (single core)
3) Bin packing schemes for multi-processor scheduling

The project was implemented as part of 18648 : Embedded Real-Time Systems… Show more

Project included implementing the following as enhancements to the Linux kernel :
1) Admission control based on top of Response Time test and resource reservation using budget and time period as task properties (Rate Monotonic Scheduling)
2) Implementation of power managements algorithms - SysClock (single core and multi-core), PM-clock (single core)
3) Bin packing schemes for multi-processor scheduling

The project was implemented as part of 18648 : Embedded Real-Time Systems (Fall 2012) and used the Nexus 7 as the hardware platform. Show less

As part of a four member team, we developed a prototype for the Chromium browser to support Transparent Key Integrity (TKI), a public key infrastructure validation scheme. TKI boasts of low computational and connection overhead while combating against rogue CAs and differentiating between legitimate and compromised server/CA re-key. The prototype worked by examining the HTTP response sent by the TKI enabled HTTP server in Chromium during Phase 3 of the SSL handshake.

- Developed a Search Engine which uses sequential dependency model method of creating structured queries and produces result set using BM25 and Indri ranking algorithms

- Designed a file system to integrate a set of heterogeneous storage devices, particularly SSDs, HDDs and cloud storage systems (like S3).
- File usage statistics were maintained for deciding the optimal usage of cloud considering its costs. Also, de-duplication was used to preserve cloud space.

- Implemented a Reliable Transport Protocol over UDP with acknowledgements, re-transmission, segmentation and re-assembly and Go-Back-N sliding window protocol

- Developed an utility to identify, parse, read, and manipulate an on-disk image of an ext2 file system.
- It was an individual assignment where I learnt about data structures in ext2 file system.

- Designed a social networking site using traditional MVC framework.
- Used different technologies like JSP and java scripts for web designing, mySQL as a data store and Hibernate as an object relational mapping tool

- Designed and implemented a concurrent proxy server using multi-threading and thread synchronization.
- Implemented the caching of web objects using Least Recently Used replacement policy.

- Implemented memory allocator functions - malloc, calloc, free and realloc
- Design included first and segregated list approach to manage free blocks. Also used adjacent block coalescing for improving space utilization.

- Implemented context switching, task management, HLP synchronization protocol for shared resources, software and timer interrupt handlers.
- Added system calls for reading, writing, sleep and mutexes