Singular Value Decomposition (SVD) and Search Engines (SEO)

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10-07-2006, 07:40 PM

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Singular Value Decomposition (SVD) and Search Engines (SEO)

Singular Value Decomposition (SVD) is a powerful and fully automatic statistical method used by Latent Semantic Analysis (LSA). The SVD algorithm is O(N2 k3), where N is the number of terms + documents, k is the number of dimensions in concept space. The SVD algorithm is unusable for a large, dynamic collection because it is hard to find the number of dimensions.
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