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I am a graduate student in the Database System Research Group (DSRG) at the Computer Science Department of Worcester Polytechnic Institute. My advisor is Professor Murali Mani.

My research interests include the following topics:

• Streaming Data Management: including Stream processing system, Stream punctuation and Distributed message filtering system 

• XML Technologies: including Data modeling, Constraints, Query processing and Indexing techniques for XML databases

• Information on the Web: including Web information retrieval, Web usage mining, Search engine design and implementation, Web ontology and Semantic web. I'm also interested in Web services and intelligent agents in the setting of e-Commerce

I am a member of the Raindrop project in DSRG. In Raindrop, we try to tackle challenges of XQuery processing over XML streams. We propose a unified algebraic framework to augment stream processing with algebra-based query optimization capabilities. The system is demonstrated in VLDB'04 (slides). The Raindrop project focuses on the following research topics: 

• Algebraic Framework: Stream specific algebraic framework with dynamic plan re-writing capability

• Schema-based Optimization: Schema-based query optimization (SQO) over tree pattern queries

• Buffer Minimization: Buffer minimization and output pipelining by constraint-based re-writing in XQuery evaluation over streaming tokens

• D-Raindrop: Distributed query processing and message filtering

Before graduate school, I was a group member in the WebDB Laboratory at Fudan University, Shanghai. In Fudan, I got involved into the following research projects on XML constraint, XML publishing and Web information retrieval:

• XML Keys: Key constraints for semi-structured data

• IndexMap: Index selection for effective XML path expression processing

• Bit-Stage: Index scheme for information retrieval processing over Web Data