Test of complementarity on sentence extraction methods

espanolAnalizamos tres enfoques para la generacion del extracto de un texto con el fin de saber si algun metodo provee a otro caracteristicas complementarias. Se aplicaron los metodos en forma combinada para analizar sus resultados, en un marco teorico propuesto. Los tres enfoques tratados fueron los basados: en graficas, en terminos clave, y en la representatividad de las oraciones. Utilizando la coleccion DUC 2002, el metodo basado en representatividad fue el mejor. Sin embargo, no se encontraron caracteristicas complementarias entre ellos, aunque a partir del analisis se identificaron algunos rasgos relevantes de los metodos. EnglishIn this work three approaches to sentence extraction methods are analyzed. We try to find if the used methods show some complementary features. In order to accomplish this goal, the methods of sentence extraction were applied and combined, analyzing the results in the theoretical framework that we propose. We test three approaches: graph-based, keyword-based and representation-based. The methods were tested using the text collection DUC 2002, obtaining the best performance for a very simple method based on representation index. Even though no complementary methods were found, the results allow to identify some relevant features of the methods.