SPUD Retrieval Model

A Lucene version of the new retrieval model is available on Github.

Query Topic Models (SPUD-QTM)

A Lucene version of the new pseudo-relevance query-expansion method based on the SPUD model is also available on Github.

Dirichlet-Compound-Multinomial

Java code for estimating the parameters of the Dirichlet-Compound-Multinomial is available here. (Note: Data must be able to fit in memory)