info:eu-repo/semantics/article
Evolutionary learning of dynamic naive bayesian classifiers
Autor
MIGUEL ANGEL PALACIOS ALONSO
CARLOS ALBERTO BRIZUELA RODRIGUEZ
LUIS ENRIQUE SUCAR SUCCAR
Resumen
Many problems such as voice recognition, speech recognition and many other tasks have been tackled with Hidden Markov Models (HMMs). These problems can also be dealt with an extension of the Naive Bayesian Classifier (NBC) known as Dynamic NBC (DNBC). From a dynamic Bayesian network (DBN) perspective, in a DNBC at each time there is a NBC. NBCs work well in data sets with independent attributes. However, they perform poorly when the attributes are dependent or when there are one or more irrelevant attributes which are dependent of some relevant ones. Therefore, to increase this classifier accuracy, we need a method to design network structures that can capture the dependencies and get rid of irrelevant attributes. Furthermore, when we deal with dynamical processes there are temporal relations that should be considered in the network design. In order to learn automatically these models from data and increase the classifier accuracy we propose an evolutionary optimization algorithm to solve this design problem. We introduce a new encoding scheme and new genetic operators which are natural extensions of previously proposed encoding and operators for grouping problems. The design methodology is applied to solve the recognition problem for nine hand gestures. Experimental results show that the evolved network has higher average classification accuracy than the basic DNBC and a HMM.
Materias
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
Compendio de innovaciones socioambientales en la frontera sur de México
Adriana Quiroga -
Caminar el cafetal: perspectivas socioambientales del café y su gente
Eduardo Bello Baltazar; Lorena Soto_Pinto; Graciela Huerta_Palacios; Jaime Gomez -
Material de empaque para biofiltración con base en poliuretano modificado con almidón, metodos para la manufactura del mismo y sistema de biofiltración
OLGA BRIGIDA GUTIERREZ ACOSTA; VLADIMIR ALONSO ESCOBAR BARRIOS; SONIA LORENA ARRIAGA GARCIA