We propose a faster inference technique using Cholesky decomposition of covariance matrices which can be applied to both the Gibbs and variational/EM method.
1 https://code.google.com/p/word2vec/ 2.2 Latent Dirichlet Allocation (LDA) LDA (Blei et al., 2003) is a probabilistic topic model of corpora of documents which seeks to represent the underlying thematic structure of the document collection.