Passage Retrieval vs. Document Retrieval in the CLEF 2006 Ad Hoc Monolingual Tasks with the IR-n System.

Elisa Noguera Fernando Llopis

Published in: CLEF (2006)

Keyphrases

passage retrieval
document retrieval
question answering
information retrieval
retrieval model
language model
question answering systems

cross language
document collections
text retrieval
document ranking
query expansion
relevance feedback
focused retrieval

short queries
query terms
document structure
pseudo relevance feedback
sentence retrieval
relevance model

relevant documents
retrieval effectiveness
xml retrieval
free text
probabilistic model
database systems