HKBU logoByron CHOI (Koon Kau) (in Chinese)

 

Assistant Professor    

Department of Computer Science (Map)
Hong Kong Baptist University

Contact Information:

Office: Room 707,

Sir Run Run Shaw Building

Hong Kong Baptist University

Kowloon Tong

Hong Kong

Tel: (+852) 3411 7638

Fax: (+852) 3411 7892
Email:  choi at hkbu dot edu dot hk / bchoi at comp dot hkbu dot edu dot hk

General Information:

I obtained my Ph.D and MSE degrees in Computer and Information Science from the University of Pennsylvania in 2006 and 2002, respectively. I received my Bachelor of Engineering degree in Computer Engineering from the Hong Kong University of Science and Technology (HKUST), in 1999. Before joining Hong Kong Baptist University, I was an Assistant Professor with School of Computer Engineering / Nanyang Technological University (NTU) for three happy years (2005 – 2008). I was a research associate at the University of Edinburgh in 2005 and a summer student intern for the Galax project at AT&T Labs Florham Park. I visited HKUST theoretical computer science group in 2003. I am currently an external member of Center for Advanced Information Systems at NTU. I am a member of ACM and IEEE.

Research Interests:

  • XML and graph databases
  • Query language implementations
  • Main-memory query processing
  • Data transformations
  • Data structures and algorithms

Teaching:

  • COMP 3720 Business Intelligence and Decision Support
  • COMP 7810 Business Intelligence
  • COMP 7800 Analytic Models in Information Technology Management
  • IT1180 Information Management Technology
  • IT1590 Searching and Managing Information
  • COMP1020 Introduction to Information Systems
  • COMP2031/2032 Group Project

Program Committee:

  • XANTEC 2009, WISE 2009, DASFAA 2009, WCMT 2009, APWeb/WAIM 2009, DEXA 2009, APCCM 2009, SIGMOD IDAR 2008, ICDE 2008, CIKM 2008, DEXA 2008, APWeb/WAIM 2008, APCCM 2008, XANTEC 2008, APWeb/WAIM 2007, XANTEC 2007, XSDM 2006, XANTEC 2006, PRIB 2006

External Reviewer:

  • JSS 2009, TKDE 2008, TKDD 2008, Information Systems 2008, DKE 2008, JRPIT 2008, TOIS 2007, TKDE 2007, Information Processing Letters 2007, JDM 2007, DKE 2007, PRIB 2007, COMAD 2006, Information Systems 2006, ER 2006, PAKDD 2006, PACIS 2006, TOIS 2005, Information Systems 2005, TKDE 2005, Journal of Web Semantics 2005, WAIM 2005, BNCOD 2005, WebDB 2004, DaWak 2004, ER 2000

Local Organizing Committee:

  • PRIB 2007

Publications:

  • R. Bramandia, B. Choi and W-K. Ng. Incremental Maintenance of 2-hop Labeling of Large Graphs. TKDE 2009 (to appear)
  • R. Bramandia, J. Cheng, B. Choi and J. X. Yu. Optimizing Updates of Recursive XML Views of Relations. The VLDB Journal 2009 (to appear)
  • L. Zhu, B. Choi, B. He, J. X. Yu and W-K. Ng. A Uniform Framework for Ad-hoc Indexes to Answer Reachability Queries on Large Graphs. DASFAA 2009. Page 138-152.
  • Y. Li, S. T. On, J. Xu, B. Choi and H. Hu. DigestJoin: Exploiting Fast Random Reads for Flash-based Joins. MDM 2009 (to appear)

  • R. Bramandia, B. Choi and W-K. Ng. On Incremental Maintenance of 2-hop Labeling of Graphs. WWW 2008. Page 845-854. [pdf]
  • B. Choi, G. Cong, W. Fan and S. D. Viglas. Updating Recursive XML Views of Relations. JCST 23(4): 516-537 July 2008.
  • N. Tang, J. X. Yu, M. T. Ozsu, B. Choi and K-F. Wong. Multiple Materialized View Selection for XPath Query Rewriting. ICDE 2008. Page 873-882.
  • L. Zhu, A. Sun and B. Choi. Online Spam-Blog Detection Through Blog Search. CIKM 2008 (poster). Page 1374-1348.

  • B. He, Q. Luo and B. Choi. Adaptive Index Utilization in Memory-Resident Structural Joins. TKDE 19(6): 772 – 788 (2007).
  • B. Choi, G. Cong, W. Fan and S. D. Viglas. Updating Recursive XML Views of Relations. ICDE 2007. Page 766 – 775.
  • B-S. Seah, K. G. Widjanarko, S. S. Bhowmick, B. Choi and E. Leonardi. Efficient Support for Ordered XPath Processing in Tree-Unaware Commercial Relational Databases. DASFAA 2007. Page 793-806.

  • B. He, Q. Luo and B. Choi. Cache-Conscious Automata for XML Filtering. TKDE 18(12): 1629-1644 (2006).
  • Z. Lin, B. He, and B. Choi. A Quantitative Summary of XML Structures. ER 2006. Page 228-240. LNCS 4215. [pdf] © Springer-Verlag.
  • B. Choi. Document Decomposition for XML Compression: A Heuristic Approach. DASFAA 2006. Page 202-217. LNCS 3382 [pdf] © Springer-Verlag.

  • P. Buneman, B. Choi, W. Fan, R. Hutchison, R. Mann and S. D. Viglas. Vectorizing and Querying Large XML Repositories. ICDE 2005. Page 261-272. [pdf]
  • B. He, Q. Luo and B. Choi. Cache-Conscious Automata for XML Filtering. ICDE 2005. Page 878-889. [pdf]

  • P. Bohannon, B. Choi and W. Fan. Incremental Evaluation of Schema-Directed XML Publishing. SIGMOD 2004. Page 503-514. [pdf]
  • B. Choi, W. Fan, X. Jia, and A. Kasprzyk. A Uniform System for Publishing and Maintaining XML Data. VLDB 2004 (demo). Page 1301-1304.

  • B. Choi, M. Mahoui and D. Wood. On the Optimality of Holistic Algorithms for Twig Queries. DEXA 2003. Page 28-37. LNCS 2736. [pdf] © Springer-Verlag.
  • M. Fernandez, J. Simeon, B. Choi, A. Marian, G. Sur. Implementing Xquery 1.0: The Galax Experience. VLDB 2003 (demo). Page 1077-1080.

  • B. Choi. What are Real DTDs Like? WebDB 2002. Page 43-48. [pdf]

Technical Reports:

  • B. Choi, M. Fernandez and J. Simeon. The XQuery Formal Semantics: A Foundation for Implementation and Optimization. Technical Report MS-CIS-02-25, University of Pennsylvania, 2002.
  • B. Choi, M. Mahoui and D. Wood. The Optimality of Holistic Algorithms for XPath. 2003. [pdf]

Talks:

  • B. Choi. Vectorising and Querying large XML Repositories: Can XML query language be as effective as SQL? Informatics Jamboree 2004 Poster Competition at University of Edinburgh.
  • P. Buneman and B. Choi. Vectorising and Querying XML. National e-Science Institute, Edinburgh. April, May 2004.
  • B. Choi, M. Mahoui and D. Wood. On the Optimality of the Holistic Twig Join Algorithm. DIMACS Working Group on Streaming Data II. March 2003.  (abstract)

Useful Tools:

Family:

  • I married Grace LH Wong in Dec 2002. With a lot of help from my former mentors, colleagues and friends, I am now living with my wife and baby girl Faith YH Choi in Hong Kong, China.