Examining Overfitting in Relevance Feedback: Sabir Research at TREC 2007

Relevance Feedback Track Overview : TREC 2008 Chris Buckley , Sabir Research

Looking at Limits and Tradeoffs: Sabir Research at TREC 2005

Sabir Research participated in TREC-2005 in the Terabyte, Robust, and document retrieval part of the Question Answering tracks. This writeup focuses on the Robust track, and in particular on a “routing” run that took advantage of relevance judgements for the topics on the old trec V45 collection to construct queries for the new Aquaint collection. The s ̄ mart retro tool is described which given...

CIIR Experiments for TREC Legal 2007

Four baseline experiments using standard Indri retrieval facilities and simple query formulation techniques and two experiments using more advanced formulations (dependence models and pseudo-relevance feedback) are described. All of the experiments perform substantially better than the median performance of automatic runs but exhibit lower estimated precision and recall at B than the reference ...

SabIR Research at TREC-9

University of Twente at the TREC 2007 Enterprise Track: Modeling Relevance Propagation for the Expert Search Task

This paper describes several approaches which we used for the expert search task of the TREC 2007 Enterprise track. We studied several methods of relevance propagation from documents to related candidate experts. Instead of onestep propagation from documents to directly related candidates, used by many systems in the previous years, we do not limit the relevance flow and disseminate it further ...