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Article type: Research Article
Authors: Chandrakala, D.a; * | Sumathi, S.b | Karthi, S.b
Affiliations: [a] Computer Science and Engineering, Kumaraguru College of Technology, Coimbatore – 641006, Tamil Nadu, India | [b] Electrical and Electronics Engineering, PSG College of Technology, Coimbatore – 641004, Tamil Nadu, India
Correspondence: [*] Corresponding author. E-mail: chandrakala.d.cse@kct.ac.in
Abstract: The pattern recognition applications like speech recognition, text classification and image recognition result in the solution of multi-class problems. Multi-class problems are reduced into several two class problems using the Machine Learning techniques such as Neural Networks and Support Vector Machines. We propose a hybrid approach for the design of output codes for multi-class pattern recognition problems. This approach has the advantage of taking into account the different aspects that are relevant for a code matrix to achieve good performance. Conventionally, code matrix is designed based on either the features of the problem or the features of the code matrix. The proposed work, focused on designing a new code matrix based on both the features of the problem and code matrix. This model aims at developing a hybrid version of ECOC and adaptive Recursive ECOC with BBO to achieve maximum classification accuracy and minimum computational time. Validation of the results has been performed using non-parametric statistical tests. The statistical results demonstrate that the evolving output codes through BBO provide a general-purpose method for improving the performance of base learners for real world multi-class pattern recognition problems.
Keywords: One versus one, one versus all, error correcting output codes, recursive- ECOC, RBFN, c5.0 binary search tree, support vector machine
DOI: 10.3233/KES-2011-0224
Journal: International Journal of Knowledge-based and Intelligent Engineering Systems, vol. 15, no. 4, pp. 227-245, 2011
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