Abstract
Classical kernel-based classifiers only use a single
kernel, but the real-world applications have emphasised
the need to consider a combination of kernels - also
known as a multiple kernel - in order to boost the
performance. Our purpose is to automatically find the
mathematical expression of a multiple kernel by
evolutionary means. In order to achieve this purpose we
propose a hybrid model that combines a Genetic
Programming (GP) algorithm and a kernel-based Support
Vector Machine (SVM) classifier. Each GP chromosome is
a tree encoding the mathematical expression of a
multiple kernel. Numerical experiments show that the
SVM embedding the evolved multiple kernel performs
better than the standard kernels for the considered
classification problems.
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