pdf dblpTask-Specific Query Expansion (MultiText Experiments for TREC 2003)David L. Yeung | Charles L. A. Clarke | Gordon V. Cormack | Thomas R. Lynam | Egidio L. TerraProceedings of The Twelfth Text REtrieval Conference, TREC 2003, Gaithersburg, Maryland, USA, November 18-21, 2003