Visualizing Electronic Document Repositories: Drawing Books and Papers in a Digital Library Andreas Rauber, Harald Bina Department of Software Technology, Vienna University of Technology Favoritenstr. 9-11 / 188, A - 1040 Vienna, Austria http://www.ifs.tuwien.ac.at/ifs {andi, harry}@ifs.tuwien.ac.at Abstract: While methods for retrieving documents from large information repositories have improved a lot, presentation of the retrieved documents still leaves a lot to be desired. Important information on documents is usually presented as a textual listing of available metadata attributes such as document size, author information, date of creation, and so on. This requires the user to read and abstract from the presented meta-information. In this paper we present our libViewer system, a Java-Applet interfacing with a number of servers to provide an intuitive metaphor-graphics based representation of document repositories. Contrary to most other multidimensional data visualization approaches we rely on intuitive real-world metaphors to provide a visualization for untrained users rather than experts in special interfaces. We introduce a set of metaphors and present two prototype systems interfacing with Dublin Core metadata based repositories as well as the AltaVista search engine. We further provide a first usability evaluation based on comments obtained from users. Keywords: Information Visualization, Metaphor Graphics, Digital Libraries, Metadata, Document Databases, User Interfaces, Usability ------------ Andreas Rauber, Harald Bina: Visualizing Electronic Document Repositories: Drawing Books and Papers in a Digital Library In: Proceedings of the 5. IFIP 2.6 Working Conference on Visual Database Systems (VDB5), May 10. - 12. 2000, Fukuoka, Japan, Advances in Visual Information Management - Visual Database Systems, pp. 95 - 114, Kluwer Academic Publishers, Norwell, MA.