Representing implicit term relationship for information retrieval

This paper proposes a model for representing and utilizing implicit term relationship among terms in the context of information retrieval. Various keyword based search engines have been developed to facilitate information retrieval over the Web. However, it can still be difficult to specify the appropriate keywords (terms) which are given to the engines. We hypothesize that, although it is not explicitly represented or specified from the user, there can be some (hidden) relationship among the terms, which can be useful to facilitate effective retrieval. We propose a model for representing the implicit relationship among the specified terms. Our model tries to capture it in terms of semantic aspect and represents it as a concrete tree structure. Experiments were conducted to investigate the effectiveness of the proposed model in the context of retrieval, and the results are reported.