Use of syntactic context to produce term association lists for text retrieval
SIGIR '92 Proceedings of the 15th annual international ACM SIGIR conference on Research and development in information retrieval
SIGIR '93 Proceedings of the 16th annual international ACM SIGIR conference on Research and development in information retrieval
Query expansion using lexical-semantic relations
SIGIR '94 Proceedings of the 17th annual international ACM SIGIR conference on Research and development in information retrieval
EuroWordNet: a multilingual database with lexical semantic networks
EuroWordNet: a multilingual database with lexical semantic networks
Explorations in Automatic Thesaurus Discovery
Explorations in Automatic Thesaurus Discovery
Performance issues and error analysis in an open-domain question answering system
ACM Transactions on Information Systems (TOIS)
Structured use of external knowledge for event-based open domain question answering
Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval
QUALIFIER: question answering by lexical fabric and external resources
EACL '03 Proceedings of the tenth conference on European chapter of the Association for Computational Linguistics - Volume 1
Performance issues and error analysis in an open-domain Question Answering system
ACL '02 Proceedings of the 40th Annual Meeting on Association for Computational Linguistics
Finding synonyms using automatic word alignment and measures of distributional similarity
COLING-ACL '06 Proceedings of the COLING/ACL on Main conference poster sessions
Question answering based on semantic roles
DeepLP '07 Proceedings of the Workshop on Deep Linguistic Processing
Simple is best: experiments with different document segmentation strategies for passage retrieval
IRQA '08 Coling 2008: Proceedings of the 2nd workshop on Information Retrieval for Question Answering
Automatically structuring domain knowledge from text: An overview of current research
Information Processing and Management: an International Journal
Enhancement of passage scorers by proximity-based term occurrence weighting
International Journal of Intelligent Information and Database Systems
| Hi-index | 0.00 |
In this paper we investigate the use of several types of lexico-semantic information for query expansion in the passage retrieval component of our QA system. We have used four corpus-based methods to acquire semantically related words, and we have used one hand-built resource. We evaluate our techniques on the Dutch CLEF QA track. In our experiments expansions that try to bridge the terminological gap between question and document collection do not result in any improvements. However, expansions bridging the knowledge gap show modest improvements.