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Searching tor Definitional Answers on the Web Using Surface Patterns.

The article discusses the use of query rewriting methods and surface patterns in Internet question-answering systems, with an emphasis on handling definitional answers. In contrast to "factoid-type" questions, definitional questions involve a complexity that demands making inferences from perhaps mu...

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Published in:Computer (00189162) Vol. 42; no. 4; pp. 68 - 77
Main Authors: Figueroa, Alejandro, Neumann, Günter, Atkinson, John
Format: Article
Published: IEEE Apr2009
Subjects:
Information-seeking strategies
Pattern perception
Internet searching
Question answering systems
Electronic information resource searching
Information retrieval
Online Access:View this record in EBSCOhost
Summary:The article discusses the use of query rewriting methods and surface patterns in Internet question-answering systems, with an emphasis on handling definitional answers. In contrast to "factoid-type" questions, definitional questions involve a complexity that demands making inferences from perhaps multiple sources. The authors present a strategy that incorporates query re-writing, surface-pattern matching, semantic analysis and sense disambiguation. Their work illustrates that Web snippets in themselves are insufficient for complete disambiguation.