LSI is a simple but powerful indexing and retrieval method that is able to identify patterns in the relationships between the terms and concepts contained in a text corpus.
The mathematics of LSI easy to understand cause is based entirely on vector and matrix algebra.
I'll post soon some code ( if someone needs code, my mail is always open ).
A good link to start your journey is: lsi.research.telcordia.com/lsi/LSIpapers.html .
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