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PASCAL Challenges Workshop 2
Pascal

Two Related Lexico-Syntactic Approaches to Entailment

author: Vasile Rus, University of Memphis

Description

Two approaches to Textual Entailment are presented. They both rely on lexico-syntactic information. The two approaches differ mainly in the way the syntactic relationships are derived. In one approach, the syntactic relationships are drawn from a phrase-based parse tree. In the other, we use information provided by a dependency parser. The first approach performs at 0.59 precision and 0.6047 average precision. The second system´s performance is 0.5837 precision and 0.5785 average precision.

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Slides
0:01 Two Related Lexico-Syntactic Approaches to Entailment
0:50 TODAY- Outline
2:06 The Two Approaches
3:07 Graph Subsumption
3:35 From Sentences to Graph Representation
4:07 The Entailment Score
4:47 The Parameters
5:30 Negation
6:13 Results – Lexico-Syntactic Approach
8:53 Comparison
9:35 Conclusions
9:46 Missed Opportunities
10:59 More Conclusions
11:12 One More Conclusion
12:34 Two Related Lexico-Syntactic Approaches to Entailment

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