CLEF 2008 Ad-Hoc Track: Comparing and Combining Different IR Approaches.

Jens Kürsten Thomas Wilhelm Maximilian Eibl

Published in: CLEF (2008)

Keyphrases

information retrieval
query expansion
question answering
evaluation framework
data sets
probabilistic model
relevance feedback
natural language processing
co occurrence
learning to rank
information access
ad hoc retrieval
cross language ir