Adding Term Weight into Boolean Query and Ranking Facility to Improve the Boolean Retrieval Model
نویسنده
چکیده
There are two major shortcomings of the Boolean Retrieval Model that has attracted many researchers to improve the model since 1980s. These two problems are: inability to accommodate term weight in boolean queries and being unable to rank in Boolean Retrieval Model. Approaches to improve these two disadvantages can help us to achieve better precision and recall results for information retrieval. Various researchers have proposed approaches to solve the two problems. This survey reviews research which tries to clarify: (1). how well does the traditional boolean query work; (2). three different methods which can add term weight into boolean query; (3). the method of adding ranking facility to Boolean Model; (4). how well does the new extended model work and what are the evaluation results.
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