SUBMISSION Deadline APRIL 30, 2002. (closed) Page Limit Free Format: maximum of 20 pages (double-spaced, 12 points, A4 or letter size). Proceedings Format: You can also prepare your paper in the format used for the conference proceedings which will be published from IEEE CS Press. The "Formatting Instructions INSTRUCT.TXT (ASCII)" can be down loaded. The maximum of 10 pages. LaTeX style files are available. Free color plate limit: one page. Cover Page The cover page should include a title, an abstract, keywords, and authors' names and affiliations. In addition, the contact information (e-mail address, mailing address, phone number and fax number) of one of the authors must be included. On-Line Submission Acceptable file formats are Postscript, PDF, RTF, and MS Word. Please send the cover-page information by email as a plain text file to pg2002@tsinghua.edu.cn If the file size of your paper is less than 4 MB, you may attach the paper in the email. You may also submit the paper by FTP. We will provide an FTP address and an account within 24 hours upon receiving your request. Submissions will be acknowledged within three days. Supplementary Materials If you have any supplementary materials to the paper, such as movie files on CD-ROM, video tapes and color plates, please send FIVE COPIES by mail to: Dr. Shi-Min HU Department of Computer Science and Technology Tsinghua University Beijing 100084, P. R. China TEL: 86-10-62782052 These materials must reach us by April 30, 2002.