Multi-class pattern classification using neural networks

Multi-class pattern classification has many applications including text document classification, speech recognition, object recognition, etc. Multi-class pattern classification using neural networks is not a trivial extension from two-class neural networks. This paper presents a comprehensive and co...

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Bibliographic Details
Published in:Pattern recognition Vol. 40; no. 1; pp. 4 - 18
Main Authors: Ou, Guobin, Murphey, Yi Lu
Format: Journal Article
Language:English
Published: Oxford Elsevier Ltd 2007
Elsevier Science
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ISSN:0031-3203, 1873-5142
Online Access:Get full text
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Summary:Multi-class pattern classification has many applications including text document classification, speech recognition, object recognition, etc. Multi-class pattern classification using neural networks is not a trivial extension from two-class neural networks. This paper presents a comprehensive and competitive study in multi-class neural learning with focuses on issues including neural network architecture, encoding schemes, training methodology and training time complexity. Our study includes multi-class pattern classification using either a system of multiple neural networks or a single neural network, and modeling pattern classes using one-against-all, one-against-one, one-against-higher-order, and P-against- Q. We also discuss implementations of these approaches and analyze training time complexity associated with each approach. We evaluate six different neural network system architectures for multi-class pattern classification along the dimensions of imbalanced data, large number of pattern classes, large vs. small training data through experiments conducted on well-known benchmark data.
ISSN:0031-3203
1873-5142
DOI:10.1016/j.patcog.2006.04.041