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My Beloved Friends and I at Orchid Island, 1998
  Now, I'm a Research Scientist at Yahoo! Research

02/2008: Ph.D., Computer Sciences, UW-Madison
Outstanding Graduate Research Award
2006-2007: Microsoft Fellowship
Microsoft Research Graduate Fellowship
10/2000-06/2002: Software Design Officer
ROC Navy Headquarter, Taiwan.
06/2000: Master of Science, Dept. of Computer Science and Information Engineering (CSIE), National Taiwan University (NTU), Taiwan. (GPA: 4.0, Rank: 1/54)
06/1998: Bachelor of Science, Dept. of CSIE, NTU, Taiwan. (GPA: 3.9, Rank: 1/45)

Email: beechung AT
Phone: +408-349-2552
Curriculum Vitae

Tutorial on Recommender Systems (KDD'10)

The following information is only up to date as of 2007.

My Ph.D. advisor is Raghu Ramakrishnan.
My Master advisor is Jieh Hsiang.
I also work with Jude Shavlik, Venky Ganti, Paul Barford, Dave Musicant, Kristen LeFevre, Lei Chen on various topics.

My research interests include: Data Mining and Analysis, Data Privacy, Database, Knowledge Representation and Reasoning, and Content-Based Information Retrieval. In the following are some of the research projects that I am/was involved in.

Goal-Oriented Privacy Preservation
Working with Professor Raghu Ramakrishnan, I investigated the tradeoff between data utility and privacy preservation in data publishing. Specifically, I defined and studied the problem of learning classification models from (privacy-preserved) SQL aggregate views [8], and proposed a novel framework that allows publishing organizations to investigate privacy threats and enforce privacy requirements in the presence of various types and amounts of adversaries' external knowledge [13].

EDAM: Exploratory Data Analysis and Monitoring
Working with Professor Raghu Ramakrishnan, I defined and investigated several novel data mining problems [6, 10] that combine predictive modeling and OLAP multidimensional exploration, which result in a promising research direction, cube-space data mining [11]. I was also involved in the design of an aggregation workflow framework [9], research on network coordinated attack data analysis [7] and research on atmospheric aerosol monitoring.

Data Cleaning @ Microsoft Research
I worked with Dr. Surajit Chaudhuri, Dr. Venkatesh Ganti and Dr. Raghav Kaushik on example-driven design of record matching queries for data cleaning [12].

Fuzzy-Logic-Based Knowledge Retrieval
Working with Professor Jieh Hsiang, I developed a novel knowledge retrieval framework and its fuzzy logic inference theory [5].

Butterfly Visual Query System (English version)
Working with Professor Jieh Hsiang, I built a content-based image retrieval (CBIR) system for butterflies. Because of the success of my methodology, in the following years, there were five M.S. and one Ph.D. studies based on my CBIR architecture in Professor Hsiang's research group.

Butterfly Digital Museum (in Chinese)
During 1998 and 1999, I was involved in the design of this Digital Museum on Taiwanese Butterflies. It was a project supported by National Science Council, Taiwan.

Image Processing and Retrieval

Recent Publication
  1. Bee-Chung Chen, Kristen LeFevre and Raghu Ramakrishnan. Privacy Skyline: Privacy with Multidimensional Adversarial Knowledge. VLDB, 2007. (paper)
  2. Surajit Chaudhuri, Bee-Chung Chen, Venkatesh Ganti and Raghav Kaushik. Example-Driven Design of Efficient Record Matching Queries. VLDB, 2007. (paper)
  3. Raghu Ramakrishnan, Bee-Chung Chen. Exploratory Mining in Cube Space. Data Mining and Knowledge Discovery, 2007. (paper)
  4. Bee-Chung Chen, Raghu Ramakrishnan, Jude W. Shavlik, Pradeep Tamma. Bellwether Analysis: Predicting Global Aggregates from Local Regions. VLDB, 2006. (paper)
  5. Lei Chen, Raghu Ramakrishnan, Paul Barford, Bee-Chung Chen, Vinod Yegneswaran. Composite Subset Measures. VLDB, 2006.
  6. Bee-Chung Chen, Lei Chen, David R. Musicant, Raghu Ramakrishnan. Learning from Aggregate Views. ICDE, 2006. (paper, online resources)
  7. Bee-Chung Chen, Vinod Yegneswaran, Paul Barford, Raghu Ramakrishnan. Toward a Query Language for Network Attack Data. NetDB, 2006. (paper)
  8. Bee-Chung Chen, Lei Chen, Yi Lin, Raghu Ramakrishnan. Prediction Cubes. VLDB, 2005. (paper, slides)
  9. Bee-Chung Chen and Jieh Hsiang. A Model of Fuzzy Logic-based Knowledge Retrieval. IEEE/WIC/ACM International Conference on Web Intelligence (WI), 2004.
  10. Jieh Hsiang, Wen-Jun Liu, Bee-Chung Chen, Hsieh-Chang Tu. Multidimensional Interactive Retrieval on Fine-grained Images. IEEE International Conference on Multimedia & Expo (ICME), 2003.
  11. Bee-Chung Chen and Jieh Hsiang. Perception-Based Image Retrieval, Technical Report NTUCSIE 02-04, National Taiwan University, 2002.
  12. Bee-Chung Chen. Intranet Data Access Control, Journal of Communications, Electronics and Information, Ministry of National Defense, R.O.C. Taiwan, vol. 3, 2002. (Published in Chinese)
  13. Bee-Chung Chen. Content-Based Image Retrieval of Butterflies, Master Thesis, Dept. of Computer Science and Information Engineering, National Taiwan University, 2000. (Published in Chinese)
2007: Outstanding Graduate Student Research Award of the CS department, UW-Madison (CS webpage)
2006: Microsoft Research Fellowship (MS webpage, CS webpage)
2000: Thesis Award of Inalways Foundation on "Content-Based Image Retrieval of Butterflies".
1995-1998: Presidential Award of National Taiwan University seven times, the best record of NTU.
        (The Presidential Award is given each semester to students ranking within the top 5% of their class.)
1997: Scholarship from Pan Wen-Yuan Foundation, Taiwan.
1993: First Prize of Singing Contest in the High School of National Normal University.

Program Download
Face Detection program (written in MATLAB)
Computer Security (encryption lib)
Butterfly DL Authoring Tool
MPEG and JPEG decoder (MFC version)
XML Manager (written in Perl)
Java internationalization test program

Friends and Links
My Beloved Freinds at Orchid Island
Classmates: I-Chen Lin (NTU), Terrence Chen (UIUC), Tsei-Chun Su (OLE Technology??),
My church & fellowship: 石門浸信會, 永和禮拜堂, NTU Campus Evangelical Fellowship

My wife and I at our engagement banquet, Taipei, Feb. 8, 2003.
  My wife:
Shiao-Ching Chung
A lovely girl, and also a "student teacher" at Hoping Senior High School.
09/1996, We met for the first time in the Campus Evangelical Fellowship, National Taiwan University.
06/2002, She finally became my girl friend.
02/08/2003, She was engaged to me.
06/21/2003, We got married.
Her Email:

>> More photos about my engagement ... (at Yahoo!Photos)

Contact Info.
beechung AT
Change AT to @.