Probabilistic latent semantic analysis

Probabilistic Latent Semantic Analysis (PLSA) is a statistical technique used in natural language processing and information retrieval for analyzing large collections of textual data. It is an extension of traditional Latent Semantic Analysis (LSA) that incorporates probabilistic modeling. ### Key Concepts: 1. **Latent Semantic Analysis (LSA)**: LSA is a method that reduces the dimensionality of large text corpora through singular value decomposition (SVD).