Report on the ACM Fourth International Workshop on Data Warehousing and OLAP (DOLAP 2001) Joachim Hammer Department of Computer & Information Science & Engineering University of Florida Gainesville, FL 32611-6120, U.S.A. jhammer@cise.ufl.edu Introduction The Fourth Annual ACM International Workshop on Data Warehousing and Online Analytical Processing (DOLAP 2001) was held in Atlanta, GA, USA, in November 2001, in conjunction with the Tenth International Conference on Information and Knowledge Management (CIKM 2001). Although this was only the fourth annual meeting, DOLAP has already become an important and broadly accepted forum for researchers and practitioners to share their findings in theoretical foundations, current methodologies, practical experiences, and new research directions in the areas of data warehousing and online analytical processing (OLAP). Despite the fact that conference attendance has been down since the horrific events of September 11, DOLAP 2001 attracted researchers from Europe, Asia and the Americas. The DOLAP 2001 program, which occupied a full day immediately following CIKM 2001, included a keynote talk, technical presentations, and a final discussion involving all workshop participants. As in previous years, the quality of the submitted papers was high and the program committee had a difficult time deciding which of the 31 submissions
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