Combination retrieval for creating knowledge from sparse document-collection.

Naohiro Matsumura Yukio Ohsawa Mitsuru Ishizuka

Published in: Knowl. Based Syst. (2005)

Keyphrases

document collections
information retrieval systems
document retrieval
test collection
information retrieval
text retrieval
index terms

ad hoc retrieval
digital libraries
query terms
relevant documents
text collections
query expansion
retrieval systems

retrieval model
similar documents
document clustering
document representation
xml retrieval
xml documents
trec collections

documents retrieved
databases
evaluation measures
inverted file
relevance feedback
document clusters