journal article Oct 17, 2018

One‐class classification using a support vector machine with a quasi‐linear kernel

View at Publisher Save 10.1002/tee.22826
Abstract
This article proposes a novel method for one‐class classification based on a divide‐and‐conquer strategy to improve the one‐class support vector machine (SVM). The idea is to build a piecewise linear separation boundary in the feature space to separate the data points from the origin, which is expected to have a more compact region in the input space. For the purpose, the input space of the dataset is first divided into a group of partitions by using a partitioning mechanism of tops% winner‐take‐all autoencoder. A gated linear network is designed to implement a group of linear classifiers for each partition, in which the gate signals are generated from the autoencoder. By applying a one‐class SVM (OCSVM) formulation to optimize the parameter set of the gated linear network, the one‐class classifier is implemented in an exactly same way as a standard OCSVM with a quasi‐linear kernel composed using a base kernel with the gate signals. The proposed one‐class classification method is applied to different real‐world datasets, and simulation results show that it shows a better performance than a traditional OCSVM. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
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References
Details
Published
Oct 17, 2018
Vol/Issue
14(3)
Pages
449-456
License
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Funding
Science Research Key Project of the Department of Education in Hubei Province, China Award: D20162202
Cite This Article
Peifeng Liang, Weite Li, Hao Tian, et al. (2018). One‐class classification using a support vector machine with a quasi‐linear kernel. IEEJ Transactions on Electrical and Electronic Engineering, 14(3), 449-456. https://doi.org/10.1002/tee.22826