573 search results - page 59 / 115 » A Semantic Approach to Question Answering Systems |
148
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SIGMOD
2012
ACM
13 years 4 months ago
2012
ACM
We study the notion of regret ratio proposed in [19] to deal with multi-criteria decision making in database systems. The regret minimization query proposed in [19] was shown to h...
103
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ICTAI
2003
IEEE
15 years 6 months ago
2003
IEEE
We investigate two seemingly incompatible approaches for improving document retrieval performance in the context of question answering: query expansion and query reduction. Querie...
100
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SEMWEB
2007
Springer
15 years 7 months ago
2007
Springer
Current information retrieval (IR) approaches do not formally capture the explicit meaning of a keyword query but provide a comfortable way for the user to specify information need...
115
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DEXAW
2007
IEEE
15 years 7 months ago
2007
IEEE
This paper presents an information retrieval methodology which uses Formal Concept Analysis in conjunction with semantics to provide contextual answers to users’ queries. User f...
132
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AAAI
2007
15 years 3 months ago
2007
Efficient query answering over ontologies is one of the most useful and important services to support Semantic Web applications. Approximation has been identified as a potential...