An Axiomatic Approach to Exploit Term Dependencies in Language Model

摘要：

One of important problems of dependence retrieval model is the challenge to integrate both single words and dependencies in one weighting schema.Although there are many retrieval models that exploit term dependencies inlanguage modeling framework,seldom of them simultaneously study the problem on different query types,e.g.,short queries and verbose queries.In this paper,we derive an axiomatic dependence model by defining several basic desirable constraints that a retrieval model should meet.The experiment results show that our model significantly and robustly improves retrieval accuracy over the baseline (unigram model) in verbose queries and achieves better performance than some state-of-art dependence models.

关键词： Term Dependency Language Model Axiomatic Approach Retrieval Heuristics

作者: Fan Ding Bin Wang

作者单位: Graduate University,Chinese Academy of Sciences,Beijing,100080,China;Institute of Computing Technolo Institute of Computing Technology,Chinese Academy of Sciences,Beijing,100080,China

会议类型: 国际会议

会议名称: 4th Asia Information Retrieval Symposium(AIRS 2008)(第四届亚洲信息检索研讨会)

会议地点: 哈尔滨

会议语种:英文

页码: 586-591

在线出版日期: 2008-01-16（万方平台首次上网日期，不代表论文的发表时间）