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Support vector-based algorithms with weighted dynamic time warping kernel function for time series classification
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DOI：10.1016/j.knosys.2014.12.003.png)
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In this paper, we propose support vector-based supervised learning algorithms, called multiclass support vector data description with weighted dynamic time warping kernel function (MSVDD-WDTWK) and multiclass support vector machines with weighted dynamic time warping kernel function (MSVM-WDTWK), which provides a flexible and robust kernel function for time series classification between non-aligned time series data resulting in improved accuracy. The proposed WDTW kernel function provides an optimal match between two time series data by not only allowing a non-linear mapping between two data sequences, but also considering relative significance depending on the phase difference between points on time series data. We validate the proposed approaches using extensive numerical experiments on a number of multiclass UCR time series data mining archive, and demonstrate that our proposed methods provide lower classification error rates compared with existing techniques. (C) 2014 Elsevier B.V. All rights reserved.
Keyword:
Time series classification
Weighted dynamic time warping kernel function
Multiclass support vector data description
Multiclass support vector machines
Dynamic time warping
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A review of unsupervised feature learning and deep learning for time-series modeling用于时间序列建模的无监督特征学习和深度学习综述
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