主持或参加科研项目情况1、国家青年自然科学基金，61202035, 云环境下的物化视图机制和高效查询应答的方法与关键技术研究、在研、主持。2、国家自然科学基金面上项目，61272110，本体导向的大规模语义信息声明式抽取方法研究、在研、参加。

1. Optimizing XML Queries: Bitmapped Materialized Views vs. Indexes. Xiaoying Wu, Dimitri Theodoratos, Hui (Wendy) Wang, Timos Sellis. Information Systems (2013), http://dx.doi.org/10.1016/j.is.2013.02.003. 2. A Survey on XML Streaming Evaluation Techniques. Xiaoying Wu, Dimitri Theodoratos. International Journal on Very Large Databases (VLDBJ), Volume 22, Issue 2 (2013), Springer, page 177-202.3. Processing and Evaluating Partial Tree Queries on XML data. Xiaoying Wu, Stefanos Souldatos, Dimitri Theodoratos, Theodore 3alamagas, Yannis Vassiliou, Timos Sellis. IEEE Trans. Knowl. Data Eng. (TKDE), 24(12): 2244-2259 (2012).4. Efficient Evaluation of Generalized Tree-Pattern Queries on XML Streams. Xiaoying Wu, Dimitri Theodoratos, Calisto Zuzarte.International Journal on Very Large Databases (VLDBJ) Volume 19, Number 5, Oct. 2010, Springer, pages 233-2545. Evaluation Techniques for Generalized Path Pattern Queries on XML Data.. Xiaoying Wu, Stefanos Souldatos, Dimitri Theodoratos, Theodore Dalamagas, Timos Sellis. World Wide Web Journal (WWWJ), Volume 13, Issue 4, 2010, Springer, pages 441-474.6. Assigning Semantics to Partial Tree-Pattern Queries. Dimitri Theodoratos, Xiaoying Wu. Data and Knowledge Engineering (DKE) Journal, Vol. 64, Issue 1, Jan. 2008, Elsevier Science, pages 242 - 265.7. Answering XML Queries Using Materialized Views Revisited. XiaoyingWu, Dimitri Theodoratos,Wendy Hui Wang. Proc. of the 18th ACM Conference on Information and Knowledge Management (CIKM’09), Hong Kong, Nov. 2009, ACM Press, pages 475-484.8. Efficient Evaluation of Generalized Path Pattern Queries on XML Data. Xiaoying Wu, Stefanos Souldatos, Dimitri Theodoratos, Theodore Dalamagas, Timos Sellis. Proc. of the 17th Intl. World WideWeb Conference (WWW’08), Beijing, China, Apr. 2008, ACM Press, pages 835-844.9. XReason: A Semantic Approach that Reasons with Patterns to Answer XML Keyword Queries. Cem Aksoy, Aggeliki Dimitriou, Dimitri Theodoratos, Xiaoying Wu. Proc. Of the 18th Intl. Conference on Database Systems for Advanced Applications (DASFAA’13), Wuhan, China, April 2013, Springer, LNCS, 15 pages.10. EliXR: an approach to eligibility criteria extraction and representation. Chunhua Weng, Xiaoying Wu, Zhihui Luo, Mary Regina Boland, Dimitri Theodoratos, Stephen B Johnson. Journal of the American Medical Informatics Association (JAMIA) 18(Supplement): 116-124 (2011).11. Efficient Storage and Temporal Query Evaluation in Hierarchical Data Archiving Systems. Hui (Wendy) Wang, Ruilin Liu, Dimitri Theodoratos, Xiaoying Wu. Proc. of the 23rd Intl. Conference on Scientific and Statistical Database Management (SSDBM’11), Portland, OR, July 2011, Springer, LNCS, pages 109-128.12. Efficient Evaluation of Generalized Tree-Pattern Queries with Same-Path Constraints. Xiaoying Wu, Dimitri Theodoratos, Stefanos Souldatos, Theodore Dalamagas, Timos Sellis. Proc. of the 21st Intl. Conference on Scientific and Statistical Database Management (SSDBM’09), New Orleans, LA, June 2009, Springer, Lecture Notes in Computer Science, pages 361-379.13. Eager Evaluation Generalized Tree-Pattern Queries on XML Streams. XiaoyingWu, Dimitri Theodoratos. Proc. of the 14th Intl. Conference on Database Systems for Advanced Applications (DASFAA’09), Brisbane, Australia, April 2009, Springer, LNCS, pages 241-246.14. Evaluating Partial Tree-Pattern Queries on XML Streams. Xiaoying Wu, Dimitri Theodoratos. Proc. of the 17th ACM Intl. Conference on Information and Knowledge Management (CIKM’08), Napa Valley, CA, Oct. 2008, Poster paper, ACM Press, pages 1409-1410.15. Evaluation of Partial Path Queries on XML Data. Stefanos Souldatos, Xiaoying Wu, Dimitri Theodoratos, Theodore Dalamagas, Timos Sellis. Proc. of the 16th ACM Intl. Conference on Information and Knowledge Management (CIKM’07), Lisboa, Portugal, 2007, ACM Press, pages 21-30.16.A Dynamic View Materialization Scheme for Sequences of Querying and Updating Statements. .Wugang Xu, Dimitri Theodoratos, Calisto Zuzarte, Xiaoying Wu, Vincent Oria. Proc. of the 9th Intl. Conference on Data Warehousing and Knowledge Discovery (DaWaK’07), Regensburg, Germany, Sep. 2007, Springer, Lecture Notes in Computer Science, pages 55-65.17. An Original Semantics to Keyword Queries for XML Using Structural Patterns. Dimitri Theodoratos, Xiaoying Wu. Proc. of the 12th Intl. Conference on Database Systems for Advanced Applications (DASFAA’07), Bangkok, Thailand, April 2007, Springer, Lecture Notes in Computer Science, pages 727-739.18. Integration of XML Data Sources with Structural Differences. Dimitri Theodoratos, Xiaoying Wu. Proc. of the Intl. Workshop on Scalable Web Information Integration and Service (SWIIS’07), Bangkok, Thailand, April 2007, World Scientific, pages 95-104.19. NF-SS: A Normal Form for Semistructured Schemata. Xiaoying Wu, Tok Wang Ling, Sin Yeung Lee, Mong Li Lee, Gillian Dobbie. Proc. of the Intl. Workshop on Data Semantics in Web Information Systems (DASWIS’01), Yokohama, Japan, Nov. 2001, Springer-Verlag, pages 292-305.20. Designing Semistructured Databases Using the ORA-SS Model. Xiaoying Wu, Tok Wang Ling, Mong Li Lee, Gillian Dobbie. Proc. of the 2nd Intl. Conference on Web Information Systems Engineering (WISE’01), Kyoto, Japan, Dec. 2001, IEEE Computer Society, pages 171-180.