Wangchao Le

   School of Computing, University of Utah
   Office: MEB 4158

   Address:
   50 S. Central Campus Drive
   School of Computing, University of Utah
   Salt Lake City UT 84112
   e-mail: lew@cs.utah.edu    Google voice: (850) 329-8096

About Me

I hold a Ph.D. degree from the University of Utah, specialized in data management and analysis. My dissertation is about supporting scalable data analytics on large linked data. At Utah, my research was supervised by Professor Feifei Li. During my Ph.D. studies, I have spent nine months visiting IBM Thomas J. Watson research center, working in the Unified Data Analytics group.

News

• I joined Microsoft in fall 2013 to work on its big data and search infrastructure.

Work Synopsis

• Database systems and large-scale data management
• Query processing and optimization for large graph data
• Temporal and multi-version databases
• Distributed key-value store
• Database security

Selected Awards

• IBM Invention Achievement Award, 2013.

Selected Refereed Publications

• Optimal Splitters for Temporal and Multi-version Databases  Slides  Poster  Code & Data  
  by W. Le, F. Li, Y. Tao, R. Christensen
  In Proceedings of 32nd ACM International Conference on Management of Data (SIGMOD 2013), pages 109-120, New York City, NY, June, 2013.


• Scalable Multi-Query Optimization for SPARQL  Slides  Poster  
  by W. Le , A. Kementsieditis, S. Duan, F. Li
  In Proceedings of 28th IEEE International Conference on Data Engineering (ICDE 2012), pages 666-677, Washington DC, April, 2012.


• Query Access Assurance in Outsourced Databases 
  by W. Le and F. Li
  IEEE Transactions on Services Computing (IEEE TSC), Vol. 5, No. 2, pages 178-191, 2012.


• Rewriting Queries on SPARQL Views  Slides  Full report  
  by W. Le , S. Duan, A. Kementsieditis, F. Li, M. Wang
  In Proceedings of 20th International World Wide Web Conference (WWW 2011), pages 655-664, Hyderabad, India, March, 2011.


• Top-k Queries on Temporal Data  Code
  by F. Li, K. Yi and W. Le
  The International Journal on Very Large Data Bases (VLDBJ), Vol. 19, No. 5, pages 715-733, 2010.


• A Hybrid License Plate Extraction Method for Complex Scenes 
  by W. Le and S. Li
  In Proceedings of 18th International Conference on Pattern Recognition (ICPR 2006), pages 324-327, Hong Kong, China, August, 2006.

Selected Other Publications

• Enforcing Query Policies Over Resource Description Framework Data  [US20120047114]
  Co-inventor
  US Patent Publication with International Business Machines Corporation.


• Database query optimizations  [US20120047124]
  Co-inventor
  US Patent Publication with International Business Machines Corporation.

Professional Work

• Research Intern at NEC Labs America, 2012.
• Research Intern at IBM T. J. Watson Research Center, 2011.
• Research Intern at IBM T. J. Watson Research Center, 2009 ~ 2010.
• Software Engineer (co-op) at Guangdong Nortel R&D Center, 2007.

Professional Services

• Invited reviewer for Journal of Computer Science and Technology (JCST).
• Invited reviewer for Distributed and Parallel Databases Journal (DAPD by Springer).