Monday, January 11, 2010

Latent Semantic Indexing (LSI)

Latent Semantic Indexing (LSI) is the indexing and retrieval method, the mathematical technique called singular value decomposition (SVD) to identify the relationships between the terms and concepts contained in an unstructured content. LSI is the word used in that environment based on the principles usually has a similar meaning. If you find an LSI - indexed databases, search engines look at the value of the content are calculated for each word, and returns document, considers the most appropriate investigation. Since the two documents can be semantically very close, even if they disagree with certain keywords, LSI is not necessary an exact match to return useful results. If a simple keyword search will fail and there is no exact match, LSI will often return relevant documents do not contain all of the keywords.

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