Papers by César Antonio Aguilar
Towards the identification of hyponym/hypernym relations in the Internet
Using Relational Adjectives for Extracting Hyponyms from Medical Texts
Revista signos, 2011
Resumen: En este trabajo se presenta un enfoque para la extracción automática de pares hipónimo-h... more Resumen: En este trabajo se presenta un enfoque para la extracción automática de pares hipónimo-hiperónimo. En particular se propone un método de extracción de información léxica, orientado a la relación de hiponimia, que utiliza un conjunto de patrones léxicos propios del español, así como un esquema simétrico de calificación de pares/patrones cuyo objetivo es enriquecer la confiabilidad del método de extracción. La eficacia del método propuesto se evaluó obteniendo hipónimos correspondientes a un vocabulario de hiperónimos dado. Los resultados logrados confirman la utilidad del método propuesto para extraer hipónimos, así como la relevancia del esquema de calificación de pares/ patrones.
Terminology, 2008
In this paper we present a description of the role of definitional verbal patterns for the extrac... more In this paper we present a description of the role of definitional verbal patterns for the extraction of semantic relations. Several studies show that semantic relations can be extracted from analytic definitions contained in machine-readable dictionaries (MRDs). In addition, definitions found in specialised texts are a good starting point to search for different types of definitions where other semantic relations occur. The extraction of definitional knowledge from specialised corpora represents another interesting approach for the extraction of semantic relations. Here, we present a descriptive analysis of definitional verbal patterns in Spanish and the first steps towards the development of a system for the automatic extraction of definitional knowledge.
Reconocimiento y clasificación de patrones verbales definitorios en corpus especializados. En Cabre T., Estopà R. & Tebé C
La terminología en el siglo XXI, 2004
Comparación de dos enfoques para la extracción de hipónimos relevantes derivados de hiperónimos
Un corpus de contextos definitorios (CCDs), más allá de ser concebido como un mero repositorio de... more Un corpus de contextos definitorios (CCDs), más allá de ser concebido como un mero repositorio de documentos, es una herramienta valiosa para la terminología y la lexicografía, ya que puede facilitar el proceso de extracción de unidades tales como términos y definiciones. Así, la propuesta que aquí se presenta expone el diseño y desarrollo del CCDs que contiene tales unidades, las cuales han sido obtenidas de corpus de textos técnicos de diversas áreas temáticas. Del mismo modo, se explica la metodología empleada y el desarrollo de las herramientas y aplicaciones previstas para este corpus.
Extraction of Definitional Contexts using Lexical Relations
Abstract: In this paper we present a method for automatically extracting definitional contexts fr... more 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 ...
This work exposes a method for extracting hyponymy-hypernymy relations from definitions situated ... more This work exposes a method for extracting hyponymy-hypernymy relations from definitions situated on specialized texts in Spanish. The method starts with the automatic extraction of a set of hyponyms and hypernyms from analytical definitions. The set of hypernyms is employed as a seed to extract an additional set of relations from a domain-specific corpus. Our method considers a phase of shallow parsing for extracting fragments of analytical definitions where term and Genus Term are located. This method reaches an average recall over 89% and an average precision of 92% about relations found in a specialized corpus.
A repository of Definitional Contexts, even more than to be conceived of as traditional corpora, ... more A repository of Definitional Contexts, even more than to be conceived of as traditional corpora, is very valuable tool for lexicography. This paper describes a corpus of Definitional Contexts, from the definition of the term to the description of the applications of the corpus in lexicography. The intended applications for the work, and how these affected the corpus design, are described. In addition, the methodology for corpus building and the corpus structure are outlined, and the preliminary results of the work in progress are presented.
Definitional contexts extraction from specialised texts
… of the NAACL HLT 2010 Young …, 2010
In this paper we propose a method to exploit analytical definitions extracted from Spanish corpor... more In this paper we propose a method to exploit analytical definitions extracted from Spanish corpora, in order to build a lexical network based on the hyponymy/hyperonymy, part/whole and attribution relations. Our method considers the following steps: (a) the recognition and extraction of definitional contexts from specialized documents, (b) the identification of analytical definitions on these definitional contexts, using verbal predications, (c) the syntactic and probabilistic analysis of the association observed between verbal predication and analytical definitions, (d) the identification of the hyponymy/hyperonymy, part/whole and attribution relations based on the lexical information that lies between predications and definitions and other types of phrases, in particular prepositional phrases mapped by the preposition de (Eng. of/from).
Análisis Lingüístico De Definiciones En Contextos Definitorios
cesaraguilar.weebly.com
Page 1. 1 Análisis lingüístico de definiciones en contextos definitorios César Antonio Aguilar Co... more Page 1. 1 Análisis lingüístico de definiciones en contextos definitorios César Antonio Aguilar Comité tutorial: Dr. Gerardo Sierra Martínez Dr. Luis Fernando Lara Dr. Sergio Bogard Sierra Ciudad Universitaria 25 de noviembre de 2008 Page 2. 2 Índice Capítulo 1: Introducción 8 ...
To obtain the terminology of a specific domain, as well as the corresponding definitions of every... more To obtain the terminology of a specific domain, as well as the corresponding definitions of every term, terminologists could either consult specialists, or could consult texts in the area. In order to simplify this last option, computational terminology has developed some tools to facilitate textual analysis for terminographical purposes based on specialised corpora.
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Papers by César Antonio Aguilar