York University at TREC 2012: CrowdSourcing Track.

Qinmin Hu Zhi Xu Xanghi Huang Zheng Ye

Published in: TREC (2012)

Keyphrases

information retrieval
test collection
retrieval effectiveness
clef ip
question answering
e learning
case study
hong kong
pseudo relevance feedback
ad hoc retrieval
crowd sourced
query expansion
retrieval model
machine learning
engineering education
intellectual property
biomedical information retrieval