摘要： Latent Dirichlet allocationFrom Wikipedia, the free encyclopediaInstatistics,latent Dirichlet allocation (LDA)is agenerative modelthat allows sets of observations to be explained byunobservedgroups that explain why some parts of the data are similar. For example, if observations are words collected 阅读全文

摘要： Plate notationFrom Wikipedia, the free encyclopediaPlate notationis a method of representing variables that repeat in agraphical model. Instead of drawing each repeated variable individually, a plate or rectangle is used to group variables into a subgraph that repeat together, and a number is drawn 阅读全文

摘要： Probabilistic latent semantic analysis (PLSA), also known asprobabilistic latent semantic indexing(PLSI, especially in information retrieval circles) is astatistical techniquefor the analysis of two-mode and co-occurrence data. PLSA evolved fromlatent semantic analysis, adding a sounder probabilisti 阅读全文