Dr Erwin Leonardi's Homepage

	Dr Erwin LEONARDI Centre for Advanced Information Systems School of Computer Engineering Nanyang Technological University N4-B3C-14, Nanyang Avenue Singapore 639798 Tel: (65) 67906328 / 67906333 Fax: (65) 67926559 Ad Maiorem Dei Gloriam
Research Interest Publications Publication (DBLP) Links Fun

Erwin Leonardi is a Research Fellow of Computation and Systems Biology in Singapore-MIT Alliance (SMA) working with Associate Professor Sourav S Bhowmick at BioInformatics Research Centre (BIRC), Nanyang Technological University. He received his PhD degree in October 2007 at the School of Computer Engineering, Nanyang Technological University. Previously, he received his Bachelor of Science in Computing from Bina Nusantara University, Jakarta, Indonesia in 2001.

Research Interest ( top )

XML Change Management, Web/XML Data management, Knowledge Discovery in Web/XML Data, Data Mining, and Semantic Web

Publications ( top )

Refereed Journal Paper(s)

Erwin Leonardi, Tran T Hoai, Sourav S Bhowmick, Sanjay Madria. DTD-Diff: A Change Detection Algorithm for DTDs. In Data and Knowledge Engineering Journal (DKE), 61(2); pp. 384-402. Elsevier Science, 2007.
Erwin Leonardi, Sourav S Bhowmick. XANDY: A Scalable Change Detection Technique for Ordered XML Documents Using Relational Databases. In Data and Knowledge Engineering Journal (DKE), 59(2); pp. 476-502. Elsevier Science, 2006.

Refereed Conference Paper(s)

Sourav S Bhowmick, Erwin Leonardi, Hongmei Sun . Efficient Processing of High Selective XML Twig Patterns with Parent Child Edges in a Tree-Unaware RDBMS. In the Proceedings of the 16th ACM International Conference on Information and Knowledge Management (ACM CIKM 2007). ACM Press, Lisboa, Portugal, Nov, 2007. (Acceptance rate 17%)
Klarinda G. Widjanarko, Erwin Leonardi, Sourav S Bhowmick . Efficient Evaluation of Nearest Common Ancestor in XML Twig Queries Using Tree-Unaware RDBMS. In the Proceedings of the 18th International Conference on Database and Expert Systems Applications (DEXA 2007). Springer Verlag, Regensburg, Germany, Sep, 2007. (Acceptance rate 32%)

Erwin Leonardi, Sourav S Bhowmick . XANADUE: A System for Detecting Changes to XML Data in Tree-Unaware Relational Databases. In the Proceedings of the ACM SIGMOD International Conference on Management of Data (ACM SIGMOD 2007). ACM, Beijing, China, June, 2007. (Demo paper)

Boon-Siew Seah, Klarinda G. Widjanarko, Sourav S Bhowmick, Byron Choi, Erwin Leonardi. Efficient Support of Ordered XPath Processing in Tree-Unaware Commercial Relational Databases. In the Proceedings of the 12th International Conference on Database System for Advanced Applications (DASFAA 2007). Springer Verlag, Bangkok, Thailand, Apr, 2007. (Acceptance rate 18.7%)

Erwin Leonardi, Sourav S Bhowmick. OXONE: A Scalable Solution for Detecting Superior Quality Deltas on Ordered Large XML Documents. In the Proceedings of the 25th International Conference on Conceptual Modelling (ER 2006). Springer Verlag, Tuscon, USA, Nov, 2006. (Acceptance rate 23%)

Erwin Leonardi, Tran T Hoai, Sourav S Bhowmick, Sanjay Madria. DTD-Diff: A Change Detection Algorithm for DTDs. In the Proceedings of the 11th International Conference on Database System for Advanced Applications (DASFAA 2006). Springer Verlag, Singapore, Apr, 2006. (Short Paper)

Erwin Leonardi, Sourav S Bhowmick. Detecting Changes on Unordered XML Documents Using Relational Databases: A Schema-Conscious Approach. In the Proceedings of the 14th ACM International Conference on Information and Knowledge Management (ACM CIKM 2005). ACM Press, Bremen, Germany, Oct-Nov, 2005. (Acceptance rate 18%) ACM CIKM 2005 Student Travel Award

Erwin Leonardi, Sri L. Budiman, Sourav S Bhowmick. Detecting Changes to Hybrid XML Documents Using Relational Databases. In the Proceedings of the 16th International Conference on Database and Expert Systems Applications (DEXA 2005). Springer Verlag, Copenhagen, Denmark, Aug, 2005. (Acceptance rate 23%) [pdf]

Erwin Leonardi, Sourav S Bhowmick, Sanjay Madria. XANDY: Detecting Changes on Large Unordered XML Documents Using Relational Databases. In the Proceedings of the 10th International Conference on Database System for Advanced Applications (DASFAA 2005). Springer Verlag, Beijing, China, Apr, 2005. (Acceptance rate 22%) [pdf]

Erwin Leonardi, Sourav S Bhowmick, T S Dharma, Sanjay Madria. Detecting Content Changes on Ordered XML Documents using Relational Databases. In the Proceedings of the 15th International Conference on Database and Expert Systems Applications (DEXA 2004). Springer Verlag, Zaragoza, Spain, Sept, 2004. (Acceptance rate 30%) [pdf]

Sourav S Bhowmick, Tay Khim Wee, Erwin Leonardi, Sanjay Madria. Storing DTD-conscious XML Data in XEDY. In the Proceedings of the 4th International Conference on Electronic Commerce and Web Technologies (EC-WEB 2003). Springer Verlag, Prague, Czech Republic, Sept, 2003. [pdf]

Research Activities ( top )

Tutorials
- Managing Changes to XML Data: The State-of-the-Art.
  Sourav S. Bhowmick, Sanjay Madria, Erwin Leonardi.
  The 9th International Conference on Web-Age Information Management (WAIM 2008), Zhangjiajie, China, July 2008
Program Committee
- ACM SAC 2008 - Special Track on Web Technologies
Reviewer
- APWeb 2004
- DEXA 2005
- XSDM 2005
- SIGKDD Explorations v8.1 Special Issue on Real-World Data Mining Applications

Links ( top )

Collaborators
- Assoc Prof Sourav S. Bhowmick from Nanyang Technological University (Singapore)
- Asst Prof Byron Choi from Nanyang Technological University (Singapore)
- Assoc Prof Mizuho Iwaihara from Kyoto University (Japan)
- Assoc Prof Sanjay Kumar Madria from University of Missouri-Rolla (USA)
Friends
- Qiankun ZHAO from Pennsylvania State University (USA)
- Ling CHEN from L3S, University of Hanover (Germany)
Research Center
- BioInformatics Research Centre
- Centre for Advanced Information Systems
DB2 Cookbook (Thanks to Graeme Birchall)
FREE ebook about IBM DB2.

Fun ( top )

Piled Higher and Deeper (PhD Comics)
PhD Blues (here)
A song about the life of PhD students. =)