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学习区分有效的语篇蕴涵

Learning to Distinguish Valid Textual Entailments
课程网址: http://videolectures.net/pcw06_marneffe_ldvte/  
主讲教师: Marie-Catherine de Marneffe
开课单位: 斯坦福大学
开课时间: 2007-02-25
课程语种: 英语
中文简介:
本文提出了一种新的文本推理架构,其中找到一个良好的对齐与评估蕴涵是分开的。在问题回答和文本蕴涵中的当前语义推理方法已经将蕴涵问题近似为使用可局部可分解的匹配得分来计算假设与文本的最佳对齐的问题。虽然这种表述足以表示诸如同义词之类的局部(词级)现象,但它不能表示全局交互,例如动词否定与限定符的添加/删除之间的相互作用,这通常对于确定蕴涵是至关重要的。
课程简介: This paper proposes a new architecture for textual inference in which finding a good alignment is separated from evaluating entailment. Current approaches to semantic inference in question answering and textual entailment have approximated the entailment problem as that of computing the best alignment of the hypothesis to the text, using a locally decomposable matching score. While this formulation is adequate for representing local (word-level) phenomena such as synonymy, it is incapable of representing global interactions, such as that between verb negation and the addition/removal of qualifiers, which are often critical for determining entailment.
关 键 词: 文本推理; 评估蕴涵; 计算假设
课程来源: 视频讲座网
最后编审: 2019-09-13:lxf
阅读次数: 60