Open Access

Per-Sample Multiple Kernel Approach for Visual Concept Learning

EURASIP Journal on Image and Video Processing20102010:461450

https://doi.org/10.1155/2010/461450

Received: 1 May 2009

Accepted: 19 January 2010

Published: 16 March 2010

Abstract

Learning visual concepts from images is an important yet challenging problem in computer vision and multimedia research areas. Multiple kernel learning (MKL) methods have shown great advantages in visual concept learning. As a visual concept often exhibits great appearance variance, a canonical MKL approach may not generate satisfactory results when a uniform kernel combination is applied over the input space. In this paper, we propose a per-sample multiple kernel learning (PS-MKL) approach to take into account intraclass diversity for improving discrimination. PS-MKL determines sample-wise kernel weights according to kernel functions and training samples. Kernel weights as well as kernel-based classifiers are jointly learned. For efficient learning, PS-MKL employs a sample selection strategy. Extensive experiments are carried out over three benchmarking datasets of different characteristics including Caltech101, WikipediaMM, and Pascal VOC'07. PS-MKL has achieved encouraging performance, comparable to the state of the art, which has outperformed a canonical MKL.

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Authors’ Affiliations

(1)
Institute of Computing Technology, Chinese Academy of Sciences
(2)
National Engineering Laboratory for Video Technology, School of EE & CS, Peking University
(3)
Graduate University, Chinese Academy of Sciences

Copyright

© Jingjing Yang et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.