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Fast updating algorithms for latent semantic indexing. (English) Zbl 1306.65193
The authors analyze “a few algorithms for updating the approximate singular value decomposition (SVD) in the context of information retrieval by latent semantic indexing (LSI) methods”. They propose a unified framework based on Rayleigh-Ritz projection methods. Numerical experiments are also discussed.
MSC:
65F20 Numerical solutions to overdetermined systems, pseudoinverses
Software:
svdpack; TMG
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