CALL FOR POSTERS The Poster Session at ISWC2003 is an opportunity to discuss late-breaking results, ongoing research projects, and innovative work-in-progress which may not yet be ready for a full paper. Technical posters, reports on Semantic Web software systems, completed work, or work in progress are all welcome. Summaries or extended abstracts MUST clearly demonstrate a relevance to the Semantic Web. Submissions will be evaluated for acceptability by the Poster Committee. Decisions about acceptance will be based on relevance to the Semantic Web, originality, significance, and clarity. High quality papers not accepted for publication as conference papers may be considered for inclusion as posters with the permission of the authors. In this event, the author(s) will need to submit a 2-page camera-ready version for the poster collection. Papers appearing in the main conference or as posters may also be submitted to specialized ISWC workshops. Accepted posters will be displayed at the conference. Details about poster size, display materials, session, etc., will be made available later. Extended abstracts/summaries for accepted posters will be distributed to conference attendees and will also be made available on the Web. At least one author must register for the conference and attend the poster session. Submissions Submissions must consist of a camera-ready extended abstract or summary of the work to be described in the poster, not to exceed two (2) pages in IJCAI two-column format. Further details about format for poster submissions will be made available at the conference Web site. The primary means of submission will be electronic. Submissions should be in PDF or Postscript format. Abstracts and summaries must be submitted via the Poster Submissions page at the ISWC2003 Web site (http://iswc2003.semanticweb.org). Contact Raphael Malyankar (iswc-posters@asu.edu) if you cannot use this page, have questions, or experience problems with your submission. All submissions must be received by July 13, 2003. Early submission is encouraged. Decisions about acceptance or rejection will be made on an ongoing basis, and early submissions are expected to receive early notifications. Submissions which are late, too long, or require substantial revision, will not be considered. Submissions must be in camera-ready format; gven the tight publication schedule, revisions after August 31, 2003 will not be feasible. Important Dates July 13, 2003 Abstract/summary submission cutoff date August 31, 2003 Notifications will be sent by this date