CIKM - Learning and Uncertainty Learning to Extract Hierarchical Information from Semi-structured Documents Wai Lam Wai-Yip Lin A Visual Tool for Structuring and Modeling Organizational Memories Tang-Ho Le Luc Lamontagne Tho-Hau Nguyen On Equivalence of Queries in Uncertain Databases Fereidoon Sadri Michael F. Bianco Return to CIKM session listing DiSC'01 Copyright ©2002 ACM Inc.