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Extraction of Definitional Contexts using Lexical Relations

by Olga Acosta, Gerardo Sierra, Cesar Aguilar
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 34 - Number 6
Year of Publication: 2011
Authors: Olga Acosta, Gerardo Sierra, Cesar Aguilar
10.5120/4121-5982

Olga Acosta, Gerardo Sierra, Cesar Aguilar . Extraction of Definitional Contexts using Lexical Relations. International Journal of Computer Applications. 34, 6 ( November 2011), 46-53. DOI=10.5120/4121-5982

@article{ 10.5120/4121-5982,
author = { Olga Acosta, Gerardo Sierra, Cesar Aguilar },
title = { Extraction of Definitional Contexts using Lexical Relations },
journal = { International Journal of Computer Applications },
issue_date = { November 2011 },
volume = { 34 },
number = { 6 },
month = { November },
year = { 2011 },
issn = { 0975-8887 },
pages = { 46-53 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume34/number6/4121-5982/ },
doi = { 10.5120/4121-5982 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:20:46.213323+05:30
%A Olga Acosta
%A Gerardo Sierra
%A Cesar Aguilar
%T Extraction of Definitional Contexts using Lexical Relations
%J International Journal of Computer Applications
%@ 0975-8887
%V 34
%N 6
%P 46-53
%D 2011
%I Foundation of Computer Science (FCS), NY, USA
Abstract

In this paper we present a method for automatically extracting definitional contexts from restricted domains in Spanish. Definitional contexts are textual fragments where there is an implicit definition that can be identified by taking into account verbal patterns linking a term and its corresponding definition. Our interest is in definitional contexts with analytical definitions. Therefore, we focus on the extraction of textual fragments with a term and a hypernym. Then, hypernym is used for filtering non-relevant contexts by means of the occurrence frequency. It is assumed most frequent hypernyms have a higher probability of giving true definitional contexts than those less frequent hypernyms. We captured regularity in analytical definitions by means of a chunk grammar. This method achieves acceptable results in precision and recall compared with other works.

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Index Terms

Computer Science
Information Sciences

Keywords

Natural language processing Information extraction Conceptual extraction Lexical relations

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