Semantic lexicon adaptation for use in query interpretation

We describe improvements to the use of semantic lexicons by a state-of-the-art query interpretation system powering a major search engine. We successfully compute concept label importance information for lexicon strings; lexicon augmentation with such information leads to a 6.4% precision increase on affected queries with no query coverage loss. Finally, lexicon filtering based on label importance leads to a 13% precision increase, but at the expense of query coverage. Categories and Subject Descriptors H.3.3 [Information Systems]: Information Storage and Retrieval General Terms Algorithms, Experimentation, Measurement

• Type: Conference
• Year: 2010
• Where: WWW
• Authors: Ana-Maria Popescu, Patrick Pantel, Gilad Mishne
• Keywords: Internet Technology, Label Importance, Query Coverage, State-of-the-art Query Interpretation, WWW 2010