Paper: A Trigger Language Model-Based IR System

ACL ID C04-1098
Title A Trigger Language Model-Based IR System
Venue International Conference on Computational Linguistics
Session Main Conference
Year 2004

Language model based IR system proposed in recent 5 years has introduced the language model approach in the speech recognition area into the IR community and improves the performance of the IR system effectively. However, the assumption that all the indexed words are irrelative behind the method is not the truth. Though statistical MT approach alleviates the situation by taking the synonymy factor into account, it never helps to judge the different meanings of the same word in varied context. In this paper we propose the trigger language model based IR system to resolve the problem. Firstly we compute the mutual information of the words from training corpus and then design the algorithm to get the triggered words of the query in order to fix down the topic of query more clearly. We introdu...