Building a textual entailment system for the RTE3 competition. Application to a QA system
|Building a textual entailment system for the RTE3 competition. Application to a QA system|
|Published in||Proceedings of the 2008 10th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing, SYNASC 2008|
|Keyword(s)||Unknown (Extra: Background knowledge, Grammar rules, QA system, Question answering systems, Semantic knowledge, System architectures, Text fragments, Textual entailment, Wikipedia, Wordnet, Competition, Computation theory, Natural language processing systems, Character recognition)|
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Building a textual entailment system for the RTE3 competition. Application to a QA system is a 2008 conference paper written in English by Iftene A. and published in Proceedings of the 2008 10th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing, SYNASC 2008.
Textual entailment recognition (RTE) is the task of deciding, when given two text fragments, whether the meaning of one text is entailed (can be inferred) from the other text. Last year, we built our first Textual Entailment (TE) system, with which we participated in the RTE31 competition. The main idea of this system is to transform the hypothesis making use of extensive semantic knowledge from sources like DIRT, WordNet, Wikipedia and acronyms database. Additionally, the system applies complex grammar rules for rephrasing in English and uses the results of a module we built to acquire the extra background knowledge needed. In the first part, we presented the system architecture and the results, whose best run ranked 3rd in RTE3 among 45 participating runs of 26 groups. The second part of the paper presents the manner in which we adapted the TE system in order to include it in a Question Answering (QA) system. The aim of using the TE system as a module in the general architecture of a QA system is to improve the ranking between possible answers for questions in which the answer type is Measure, Person, Location, Date and Organization.
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