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Scientific visualization is a rapidly growing research field with a need for information dissemination. This report describes the Electronic Visualization Library (EVlib), a digital library for scientific visualization. Main design goals of EVlib were an attractive user interface providing various kind of access mechanisms as well as an open interface to other already established information systems. EVlib stores fulltext versions of documents where they are available. We also provide access to BibTeX entries for every stored document. All available BibTeX entries are combined in BibTeX bibliographies which are registered with the ``Collection of Computer Science Bibliographies'' at University of Karlsruhe. Additionally, we have defined a mapping from BibTeX attributes to the Dublin Core attribute set. This mapping is used to provide a gatherer interface for the Harvest information system. This way, existing Harvest installations can immediately use EVlib as an information resource.
This report describes the development of an experimental service for picture-based document retrieval for the Electronic Visualization Library (EVlib). The EVlib is a digital library for scientific visualization, established at the Konrad-Zuse-Zentrum für Informationstechnik Berlin (ZIB). The picture-based retrieval service allows users to look for documents by describing the pictures they contain. This query method was developed based on the assumption that (1) pictures often represent relevant parts of the contents of a document, and (2) pictures are often remembered well. A picture-based approach provides a new quality of accessing and exploring scientific literature. Motivation, concepts and realization of our service are outlined. Results of a user test are presented, too. The results indicate that this service can be used for searching and browsing the document collection in principle. On the other hand, problems were detected which can give fruitful hints for future work concerning document and image retrieval.