PROBABILISTIC LATENT SEMANTIC ANALYSIS
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• Review Latent Semantic Indexing/Analysis (LSI/LSA) – LSA is a technique of analyzing relationships between a set of documents and the terms they contain by producing a set of concepts related to the documents and terms. – In the context of its application to information retrieval, it is called LSI. • Probabilistic Latent Semantic Indexing/Analysis (PLSI/PLSA) • Hypertext‐Induced Topic Selection (HITS and PHITS) • Joint model of PHITS and PLSI
[1] David A. Cohn,et al. The Missing Link - A Probabilistic Model of Document Content and Hypertext Connectivity , 2000, NIPS.