Estimating the query difficulty for information retrieval.

David Carmel Elad Yom-Tov

Published in: SIGIR (2010)

Keyphrases

query difficulty
information retrieval
retrieval effectiveness
average precision
query performance prediction
test collection

recent approaches
information retrieval systems
vector space model
query expansion
search engine
information extraction

retrieval model
document collections
retrieval systems
text mining
relevant documents

document retrieval
query terms
tf idf
relevance feedback
language model