Título

Towards multi-stream question answering using answer validation

Autor

ALBERTO TELLEZ VALERO

MANUEL MONTES Y GOMEZ

LUIS VILLASEÑOR PINEDA

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

Question answering - (QUESTION ANSWERING) Information fusion - (INFORMATION FUSION) Answer validation - (ANSWER VALIDATION) Textual entailment - (TEXTUAL ENTAILMENT) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) MATEMÁTICAS - (CTI) CIENCIA DE LOS ORDENADORES - (CTI) CIENCIA DE LOS ORDENADORES - (CTI)

Resumen o descripción

Motivated by the continuous growth of theWeb in the number of sites and users, several search engines attempt to extend their traditional functionality by incorporating question answering (QA) facilities. This extension seems natural but it is not straightforward since current QA systems still achieve poor performance rates for languages other than English. Based on the fact that retrieval effectiveness has been previously improved by combining evidence from multiple search engines, in this paper we propose a method that allows taking advantage of the outputs of several QA systems. This method is based on an answer validation approach that decides about the correctness of answers based on their entailment with a support text, and therefore, that reduces the influence of the answer redundancies and the system confidences. Experimental results on Spanish are encouraging; evaluated over a set of 190 questions from the CLEF 2006 collection, our method responded correctly 63% of the questions, outperforming the best QA participating system (53%) by a relative increase of 19%. In addition, when they were considered five answers per question, our method could obtain the correct answer for 73% of the questions. In this case, it outperformed traditional multi-stream techniques by generating a better ranking of the set of answers presented to the users.

Editor

Informatica

Fecha de publicación

2010

Tipo de publicación

Artículo

Versión de la publicación

Versión aceptada

Recurso de información

http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1405

Formato

application/pdf

Idioma

Inglés

Audiencia

Estudiantes

Investigadores

Público en general

Sugerencia de citación

Téllez-Valero, A., et al., (2010). Towards multi-stream question answering using answer validation, Informatica, (34): 45–54

Repositorio Orígen

Repositorio Institucional del INAOE

Descargas

264