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Contradictions and Justifications: Extensions to the Textual Entailment Task
Published
Author(s)
Ellen M. Voorhees
Abstract
The third PASCAL Recognizing Textual Entailment Challenge (RTE-3) contained an optional task that extended the main entailment task by requiring a system to make three-way entailment decisions (entails, contradicts, neither) and to justify its response. Contradiction was rare in the RTE-3 test set, occurring in only about 10% of the cases, and systems found accurately detecting it difficult. Subsequent analysis of the results shows a test set must contain many more entailment pairs for the three-way task than the traditional two-way task to have equal confidence in system comparisons. Each of six human judges representing eventual end users rated the quality of a justification by assigning "understandability" and "correctness" scores. Ratings of the same justification across judges differed significantly, signaling the need for a better characterization of the justification task.
Proceedings Title
Proceedings of the 46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL 2008)
Conference Dates
June 15-20, 2008
Conference Location
Columbus, OH
Conference Title
46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL 2008)
Voorhees, E.
(2008),
Contradictions and Justifications: Extensions to the Textual Entailment Task, Proceedings of the 46th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL 2008), Columbus, OH, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=152115
(Accessed September 10, 2024)