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IJON
1998

WEBSOM - Self-organizing maps of document collections

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WEBSOM - Self-organizing maps of document collections
With the WEBSOM method a textual document collection may be organized onto a graphical map display that provides an overview of the collection and facilitates interactive browsing. Interesting documents can be located on the map using a content-directed search. Each document is encoded as a histogram of word categories which are formed by the self-organizing map (SOM) algorithm based on the similarities in the contexts of the words. The encoded documents are organized on another self-organizing map, a document map, on which nearby locations contain similar documents. Special consideration is given to the computation of very large document maps which is possible with general-purpose computers if the dimensionality of the word category histograms is first reduced with a random mapping method and if computationally efficient algorithms are used in computing the SOMs. 1998 Elsevier Science B.V. All rights reserved.
Samuel Kaski, Timo Honkela, Krista Lagus, Teuvo Ko
Added 22 Dec 2010
Updated 22 Dec 2010
Type Journal
Year 1998
Where IJON
Authors Samuel Kaski, Timo Honkela, Krista Lagus, Teuvo Kohonen
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