now that the topic is clustering methods: has there been any effort in implementing Latent semantic indexing in Lucene? Google only indicates someone else asking this in february.
Just a note the LSI is encumbered by US patents 4,839,853 and 5,301,109. It would be wise to make sure that any implementation is either blessed by the patent holders or does not infringe on the patents.
Regards,
Bruce Ritchie
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