Paper: Lexical Ambiguity And Information Retrieval Revisited

ACL ID W99-0624
Title Lexical Ambiguity And Information Retrieval Revisited
Venue 2000 Joint SIGDAT Conference on Empirical Methods in Natural Language Processing and Very Large Corpora
Session Main Conference
Year 1999

A number of previous experiments on the role of lexical ambiguity, in Information Retrieval are re- produced on the'IR-Semcor test collection (derived from Semcor), where both queries and documents are hand-tagged ;with phrases, Part-Of-Speech and WordNet 1.5 senses. Our results indicate that a) Word Sense Disambigua- tion can be more beneficial to Information Retrieval than the experiments of Sanderson (1994) with arti- ficially ambiguous pseudo-words suggested, b) Part- Of-Speech tagging does not seem to help Improving retrieval, even if it is manually annotated, c) Using phrases as indexing terms is not a good strategy if no partial credit is given to the phrase components.