Weltall Xu

Bio

Jian (Weltall) Xu is an associate researcher at SAP Research Center, China who joined SAP in June, 2008. He received his M.S. degree in Computer Software and Theory from Fudan University, China in 2008 under Dr. Wei Wang’s supervision. His research interests primarily lie in the fields of database systems, data warehousing, and data mining. Currently, he is interested in various techniques of query evaluation, database partitioning and privacy preservation. Before joining SAP, he was once a summer intern at Google Inc. He also received his B.S. degree in Computer Science and Technology from Fudan University in 2005.

Interested research areas

Database Systems, Data Warehousing, Data Mining, Data Security and Privacy

Publications

• Zhibin Wang, Jian Xu, Haofeng Zhou, Wei Wang, and Baile Shi. "Search Online Community with Author Expertise Profile Analysis ". To appear in Proceedings of the 24th National Database Conference (NDBC'07), Haikou, China, Oct 19-21, 2007.
• Jian Pei, Jian Xu, Zhibin Wang, Wei Wang, and Ke Wang. " Maintaining K-Anonymity against Incremental Updates". In Proceedings of the 19th International Conference on Scientific and Statistical Database Management (SSDBM'07), Banff, Canada, July 9-11, 2007.
• Jian Xu, Wei Wang, Jian Pei, Xiaoyuan Wang, Baile Shi, and Ada Wai-Chee Fu. "Utility-Based Anonymization for Privacy Preservation with Less Information Loss". In Proceedings of the 2nd ACM SIGKDD Workshop on Utility-Based Data Mining (UBDM'06), in conjunction with the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD'06), Philadelphia, PA, USA, August 20, 2006. (Best Paper Award)
• Jian Xu, Wei Wang, Jian Pei, Xiaoyuan Wang, Baile Shi, and Ada Wai-Chee Fu. "Utility-Based Anonymization Using Local Recoding". In Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD'06), Philadelphia, PA, USA, August 20-23, 2006.
• Jun Tang , Zunping Chen, Jian Xu, Wei Wang, and Baile Shi. "GSAF: A Grid-based Service Allocation Framework ".In Proceedings of the 22th National Database Conference (NDBC'05), Hohhot, China, Aug 19-21, 2005.
• Tianyi Wu, Jian Xu, Chen Wang, Wei Wang, and Baile Shi. "ADenTS: An Adaptive Density-based Tree Structure for Approximating Aggregate Queries over Real Attributes".In Proceedings of the Ninth Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD'05), Hanoi, Vietman, May 18-20, 2005.