- Donald Metzler, Fernando Diaz, Trevor Strohman, W. Bruce Croft. 2005. UMass Robust 2005: Using Mixtures of Relevance Models for Query Expansion. Abstract: This paper describes the UMass TREC 2005 Robust Track experiments. We focus on approaches that use term proximity and pseudo-relevance feedback using external collections. Our results indicate both approaches are highly eectiv e.
