NTT Question Answering System in TREC 2001.

Hideto Kazawa Hideki Isozaki Eisaku Maeda

Published in: TREC (2001)

Keyphrases

question answering
question answering systems
information retrieval
question classification
test collection
natural language
retrieval effectiveness

answer validation
answer extraction
natural language processing
information extraction
evaluation campaigns
named entities
neural network

cross language
passage retrieval
web search
ir evaluation
open domain
text mining
information retrieval systems

ad hoc retrieval
retrieval model
qa clef
retrieval systems
biomedical information retrieval
reuters corpus volume