Michael Marshall is co-founder and Vice President of Technology at Fortune Interactive and has over 17 years experience in information technology covering a wide range of specialties including: web design, software engineering, e-commerce solutions, artificial intelligence, and Internet marketing. He is a contributor to �Building Your Business With Google for Dummies� by Brad Hill (Wiley Publishing) and a regular, featured speaker at Ultra Advanced SEO Symposiums, a meeting of select masters of the search engine marketing industry. Michael is also a certified instructor at the D.C. Search Engine Academy. He has degrees in Linguistics, Philosophy and Theology and is presently a Philosophy PhD student at the University of Virginia focusing in the area of semantics.

Latent Semantic Indexing (LSI): What it is, how it works and what it means

by Michael Marshall    October 20, 2005

Latent Semantic Indexing (LSI) is a highly beneficial technique for search engines to use for improving recall, precision, and ranking. It can gauge very accurately which documents in a corpus are really relevant to a search phrase even if that search phrase does not appear in a document....