Publications

• Ling Liu, Wei Tang, David Buttler, and Calton Pu. Information Monitoring on the Web: A Scalable Solution To appear in the World Wide Web Journal by Kluwer Academic Publishers, 2002.

• Ling Liu, Calton Pu, and Wei Tang. WebCQ: Detecting and Delivering Information Changes on the Web In the Proceesings of International Conference on Information and Knowledge Management (CIKM), Nov. 7-10, 2000 Washington D.C., ACM Press. (A short version of the following technical report).

• Ling Liu, Dave Buttler. Wei Han, Calton Pu, Henrique Paques, Calton Pu, Wei Tang. AQR-Toolkit: An Adaptive Query Routing Middleware for Distributed Data Int ensive Systems", To appear in ACM SIGMOD 2000, Dallas, Texas (May 14-19).

• Ling Liu, Calton Pu, Wei Han. "XWrap: An XML-enabled Wrapper Construction System for Web Information Sources ", To appear in International Conference on Data Engineering (ICDE 2000), March, 2000, San Diego, CA (IEEE CS Press). pp.

• Ling Liu, Calton Pu and Wei Tang. " Supporting Internet Applications Beyond Browsing: Trigger Processing and Change Notification", Proceedings of the 5th International Computer Science Conference (ICSC '99) Special Theme on Internet Applications, December 15-17, 1999, Hong Kong. (Springer Verlag). pp294-304.

• Ling Liu, Calton Pu, Wei Han, David Buttler, Wei Tang. `` Building an Extensible Wrapper Repository System: A Metadata Approach ", Proceeding of the third IEEE Metadata Conference, Bethesda, Maryland, April 6-7, 1999.

• Ling Liu, Calton Pu, Wei Han, David Buttler, Wei Tang. ``An XML-based Wrapper Generator for Web Information Extraction", To appear in the Proceedings of the ACM SIGMOD International Conference, June 1-4, Philadelphia.

• Ling Liu, Calton Pu, Wei Tang. "Continual Queries for Internet Scale Event-Driven Information Delivery", In: Special issue on Web Technologies, IEEE Transactions on Knowledge and Data Engineering, Vol.11, No.4, July/Aug. 1999. pp610-628. (pdf)

• Ling Liu, Calton Pu, Wei Tang and Wei Han. " Conquer: A Continual Query System for Update Monitoring in the WWWW". special issue on Web semantics, International journal of Computer Systems, Science and Engineering. (pdf)

• Ling Liu. " Query Routing in Large-scale Digital Library Systems". To appear in International Conference on Data Engineering (ICDE'99), March, 1999 (Sydn ey, Australia), IEEE Press. (The long version can be accessible at here in pdf)

• Ling Liu, Calton Pu, Wei Tang, Dave Buttler, John Biggs, Paul Benninghoff, Wei Han, Fenghua Yu. `` CQ: A Personalized Update Monitoring Toolkit". Proceedings of the ACM SIGMOD, May, 1998. (pdf)

• Ling Liu, Calton Pu, Kirill Richine. " Distributed Query Scheduling Service: An architecture and its Implementation", Special issue on Compound Information Services, International Journal of Cooperative Information Systems (IJCIS), edited by Avigdor Gal and John Mylopoulos. Vol.7, No.2&3, 1998. pp123-166. (pdf)

• Calton Pu and Ling Liu. `` Update Monitoring: The CQ project". (invited paper) in: The 2nd International Conference on Worldwide Computing and Its Applications - WWCA'98, Tsukuba, Japan, Lecture Notes in Computer Science 1368, pp396-411. ( (pdf)

• Ling Liu, Calton Pu, Roger Barga, Tong Zhou. " Differential Evaluation of Continual Queries ", In IEEE Proceedings of the 16th International Conference on Distributed Computing Systems, 27-30 May, 1996, Hong Kong. (IEEE Press) pp458-465. (pdf) The long version is available as technical report TR95-17, Depar tment of Computing Science, University of Alberta, Oct. 1995. (pdf)

• L. Liu and C. Pu. `` A Metadata-based Approach to Improving Query Responsiveness", In Proceedings of the 2nd IEEE Metadata Conference. Sept, 1997 (Sliver Spring, Maryland). (pdf)

• L. Liu and C. Pu. ``Dynamic Query Processing in DIOM", In IEEE Bulletin on Data Engineering, Special issues on Improving Query Responsiveness, September 1997 Vol.20, No. 3. (pdf)

• Ling Liu and Calton Pu. "Object-oriented Approach to Integration and Access of Heterogeneous Information Sources", DISTRIBUTED AND PARALLEL DATABASES: An International Journal, Volume 5, No. 2, 1997, pp167-205. (pdf)

• L. Liu and C. Pu. ''A Dynamic Query Scheduling Framework for Distributed and Evolving Information Systems", The 17th IEEE International Conference on Distributed Computing Systems (ICDCS'97), Baltimore, Maryland, USA, May 27-30, 1997. pp474-481. (pdf)

• Ling Liu, Calton Pu and Yooshin Lee. " Adaptive Query Mediation across Heterogeneous Information Sources ", In International Conference on Cooperative Information Systems (CoopIS), Brussels, Belgium, June 19-13, 1996. (pdf)

cq@cc.gatech.edu