User Modeling 2001: 8th International Conference, Um 2001, Sonthofen, Germany, July 13-17, 2001. Proceedings

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The study of the ?eld of user modeling has resulted in signi?cant amounts of theoretical work, as well as practical experience, in developing UM-based applications in traditional areas of human-computer interaction and tutoring systems. Further, it promises to have an enormous impact on recent developments in areas like information ?ltering, e-commerce, adaptive presentation techniques, and interface agents. A user model is an explicit representation of properties of a particular user, which allows the system to adapt diverse aspects of its performance to individual users'needs. TechniquesforUMhavebeendevelopedandevaluatedbytheoreticiansandpractitioners in a variety of ?elds, including arti?cial intelligence, education, psychology, cognitive science, linguistics, and human-computer interaction. The International Conferences on User Modeling constitute the major forum for pres- tationanddiscussionofboththelatestdevelopmentsinacademicresearchonallaspects of user modeling and industrial experience in deploying adaptive systems in real-world applications. This volume contains the proceedings of the Eighth International C- ference on User Modeling , held in Sonthofen, Germany. It follows UM99 , UM97, UM96, UM94, UM92, UM90andUM86. Until now, the proceedings of the conference have been published with university p- lishers.AfterdiscussionswithinUMInc., itwasdecidedfromnowontopublishthep- ceedingsvolumewithoneofthemajorpublishingcompanies, toensurewideravailability of the volume in libraries and archives. After careful consideration Springer-Verlag was chosen. The UM2001 program includes tutorials, invited talks, technical paper and poster s- sions, a doctoral consortium, workshops, and system demonstrations. There were a total of 79 technical submissions from 20 countries.