Automatic Extraction of Hyponymy-Hypernymy Lexical Relations between Nouns from a Spanish Dictionary

Authors:
Rodolfo A. Pazos R.;José A. Martínez F.;Juan J. González B.;María Lucila Morales-Rodríguez;Jessica C. Rojas P.
Affiliations:
Instituto Tecnológico de Ciudad Madero, Cd. Madero, Mexico 89440;Instituto Tecnológico de Ciudad Madero, Cd. Madero, Mexico 89440;Instituto Tecnológico de Ciudad Madero, Cd. Madero, Mexico 89440;Instituto Tecnológico de Ciudad Madero, Cd. Madero, Mexico 89440;Instituto Tecnológico de Ciudad Madero, Cd. Madero, Mexico 89440
Venue:
KES '09 Proceedings of the 13th International Conference on Knowledge-Based and Intelligent Information and Engineering Systems: Part I
Year:
2009

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Abstract

In this paper a method is presented which permits to automatically extract lexical-semantic relations between nouns (specifically for concrete nouns since they have a well structured taxonomy). From the definitions of the entries in a Spanish dictionary, the hypernym of an entry is extracted from the entry definition according to the basic assumption that the first noun in the definition is the entry hypernym. After obtaining the hypernym for each entry, multilayered hyponymy-hyperonymy relations are generated from a noun, which is considered the root of the domain. The domains for which this approach was tested were zoology and botany. Five levels of hyponymy-hypernymy relations were generated for each domain. For the zoology domain a total of 1,326 relations was obtained with an average percentage of correctly generated relations (precision) of 84.31% for the five levels. 91.32% of all the relations of this domain were obtained in the first three levels, and for each of these levels the precision exceeds 96%. For the botany domain a total of 1,199 relations was obtained, with an average precision of 71.31% for the five levels. 90.76% of all the relations of this domain were obtained in the first level, and for this level the precision exceeds 99%.