An introduction and overview of current approaches

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Unformatted text preview: ters onto a two dimensional surface and finally maps the documents relative to the projected cluster centers. SPIRE offers a scatter plot like projection as well as a three dimensional visualization. The visualization tool SCI-Map (Small 1999) applies an iterative clustering approach to create a network using, e.g., references of scientific publications. The tools visualizes the structure by a map hierarchy with an increasing number of details. One major problem of most existing visualization approaches is that they create their output only by use of data inherent information, i.e. the distribution of the documents in document space. User specific information can not be integrated in order to obtain, e.g., an improved separation of the documents with respect to user defined criteria like keywords or phrases. Furthermore, the possibilities for a user to interact with the system in order to navigate or search are usually very limited, e.g., to boolean keyword searches and simple result lists. 3.5 Further Application Areas...
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