Error-correcting output codes in the framework of deep ordinal classification

Research areas:

• Applications - Health
• Methodology - Machine learning
• Methodology - Ordinal classification
• Methodology - Convolutional Neural Networks

Year:

2021

Type of Publication:

In Proceedings

Keywords:

Artificial Neural Networks, Ordinal Classification

Authors:

• Barbero-Gómez, Javier
• Gutiérrez, Pedro Antonio
• Hervás-Martínez, César

Volume:

12862

Book title:

2021 International Work-conference on Artificial Neural Networks (IWANN 2021)

Number:

Part II

Series:

Lecture Notes in Computer Science (LNCS)

Pages:

3-13

Organization:

Online

Month:

16nd-18th June

ISBN:

978-3-030-85029-6

ISSN:

0302-9743

Abstract:

Automatic classification tasks have been revolutionized by Convolutional Neural Networks (CNNs), but the focus has been on binary and nominal classification tasks. Only recently, ordinal classification (where class labels present a natural ordering) has been tackled through the framework of CNNs, such as adapting the classic Proportional Odds Model to deep architectures. Also, ordinal classification datasets commonly present a high imbalance in the number of samples of each class, making it an even harder problem. In this work, we present a new CNN architecture based on the Ordinal Binary Decomposition (OBD) technique using Error-Correcting Output Codes (ECOC) and show how it can improve performance over previously proposed methods.