For example the tool vxinsight boyack et al 2002

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Unformatted text preview: ting can be scanned for further similar documents. Furthermore, the distribution of keyword search results can be visualized by coloring the grid cells of the map with respect to the number of hits. This allows a user to judge e.g. whether the search results are assigned to a small number of (neighboring) grid cells of the map, or whether the search hits are spread widely over the map and thus the search was – most likely – too unspecific. A first application of self-organizing maps in information retrieval was presented in Lin et al. (1991). It provided a simple two-dimensional cluster representation (categorization) of a small document collection. A refined model, the WEBSOM approach, extended this idea to a web based interface applied to newsgroup data that provides simple zooming techniques and coloring methods (Honkela et al. 1996; Honkela 1997; Kohonen et al. 2000). Further extensions introduced hierarchies (Merkl 1998), supported the visualization of search results (Roussinov...
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This note was uploaded on 06/19/2011 for the course IT 2258 taught by Professor Aymenali during the Summer '11 term at Abu Dhabi University.

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