====Oct 12th, 2009==== LDA via gibbs sampling code is available now, you can download it from downloads page, file name:ldaviagibbs.zip. To compile and run, please refer to the HOWTO article in Wiki page. If you find any bugs, please tell me. ====Jul 31, 2009==== LDA Code & Latent Dirichlet Alloc...

== The Semantic Vectors Package == Semantic Vector indexes, created by applying a Random Projection algorithm to term-document matrices created using [http://lucene.apache.org/java/docs/ Apache Lucene]. The package was created as part of a project by the University of Pittsburgh Office of Technol...

=Project Overview= The S-Space Package is a collection of algorithms for building Semantic Spaces. These algorithms process text corpora and map semantic representations for words onto high dimensional vectors. These approaches are known by many names, such as word spaces, semantic spaces, or d...

The Hidden Topic Markov Model We propose modeling the topics of words in the document as a Markov chain. Specifically, we assume that all words in the same sentence have the same topic, and successive sentences are more likely to have the same topics. Since the topics are hidden, this leads to u...