Numeric Query Answering on the Web

Steven O’Hara and Tom Bylander
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Steven O’Hara: University of Texas at San Antonio, USA
Tom Bylander: University of Texas at San Antonio, USA

International Journal on Semantic Web and Information Systems (IJSWIS), 2011, vol. 7, issue 1, 1-17

Abstract: Query answering usually assumes that the asker is looking for a single correct answer to the question. When retrieving a textual answer this is often the case, but when searching for numeric answers, there are additional considerations. In particular, numbers often have units associated with them, and the asker may not care whether the raw answer is in feet or meters. Also, numbers usually denote a precision. In a few cases, the precision may be explicit, but normally, there is an implied precision associated with every number. Finally, an association between different reliability levels to different sources can be made. In this paper, the authors experimentally show that, in the context of conflicting answers from multiple sources, numeric query accuracy can be improved by taking advantage of units, precision, and the reliability of sources.

Date: 2011
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