Here is a nice ppt presentation from Prabhaker Raghavan, Christopher Manning and Thomas Hoffmann lectures on Latent Semantic Indexing. Happy to see in the notes of slide 25 that my SVD and LSI Tutorial was referenced.

For those that were gamed by some unethical SEOs using LSI verbose crap, check the following oldie, but still relevant, post:

http://irthoughts.wordpress.com/2007/05/01/irwatch-may-issue-demystifying-lsi/

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