Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/82139
Type: Artigo
Title: Multiclass from binary: expanding one-versus-all, one-versus-one and ECOC-based approaches
Author: Rocha, Anderson
Goldenstein, Siome Klein
Abstract: Recently, there has been a lot of success in the development of effective binary classifiers. Although many statistical classification techniques have natural multiclass extensions, some, such as the support vector machines, do not. The existing techniques for mapping multiclass problems onto a set of simpler binary classification problems run into serious efficiency problems when there are hundreds or even thousands of classes, and these are the scenarios where this paper's contributions shine. We introduce the concept of correlation and joint probability of base binary learners. We learn these properties during the training stage, group the binary leaner's based on their independence and, with a Bayesian approach, combine the results to predict the class of a new instance. Finally, we also discuss two additional strategies: one to reduce the number of required base learners in the multiclass classification, and another to find new base learners that might best complement the existing set. We use these two new procedures iteratively to complement the initial solution and improve the overall performance. This paper has two goals: finding the most discriminative binary classifiers to solve a multiclass problem and keeping up the efficiency, i.e., small number of base learners. We validate and compare the method with a diverse set of methods of the literature in several public available datasets that range from small (10 to 26 classes) to large multiclass problems (1000 classes) always using simple reproducible scenarios.
Recently, there has been a lot of success in the development of effective binary classifiers. Although many statistical classification techniques have natural multiclass extensions, some, such as the support vector machines, do not. The existing technique
Subject: Classificação multi-classe
Inteligência artificial
Máquina de vetores de suporte
Teoria bayesiana de decisão estatística
Country: Estados Unidos
Editor: Institute of Electrical and Electronics Engineers
Citation: Ieee Transactions On Neural Networks And Learning Systems. Ieee-inst Electrical Electronics Engineers Inc, v. 25, n. 2, n. 289, n. 302, 2014.
Rights: Fechado
Identifier DOI: 10.1109/TNNLS.2013.2274735
Address: https://ieeexplore.ieee.org/document/6575194
Date Issue: 2014
Appears in Collections:IC - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
000330040800004.pdf1.82 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.