PITT at TREC 2011 Session Track.

Jiepu Jiang Shuguang Han Jia Wu Daqing He

Published in: TREC (2011)

Keyphrases

information retrieval
question answering
retrieval effectiveness
clef ip
test collection
pseudo relevance feedback
real time
genetic algorithm
relevance feedback
ad hoc retrieval
biomedical information retrieval
short queries
real time tracking
query expansion
text mining
digital libraries
machine learning