Journal
IEEE TRANSACTIONS ON NEURAL NETWORKS
Volume 11, Issue 3, Pages 574-585Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/72.846729
Keywords
data mining; exploratory data analysis; knowledge discovery; large databases; parallel implementation; random projection; self-organizing map (SOM); textual documents
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This article describes the implementation of a system that is able to organize vast document collections according to textual similarities. It is based on the self-organizing map (SOM) algorithm. As the feature vectors for the documents statistical representations of their vocabularies are used. The main goal in our work: has been to scale up the SOM algorithm to be able to deal with large amounts of high-dimensional data. In a practical experiment we mapped 6 840 568 patent abstracts onto a 1 002 240-node SOM, As the feature vectors we used 500-dimensional vectors of stochastic figures obtained as random projections of weighted word histograms.
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