Probabilistic RetrievalCovers Probabilistic Information Retrieval, modeling relevance as a probability, query expansion, and automatic thesaurus generation.
Latent Dirichlet AllocationCovers Latent Dirichlet Allocation, a state-of-the-art method for concept extraction using a probabilistic generative model.
Latent Semantic IndexingCovers Latent Semantic Indexing, a method to improve information retrieval by mapping documents and queries into a lower-dimensional concept space.
