multiclass posterior probability twin svm for motor imagery eeg classification

Clicks: 175
ID: 213220
2015
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Abstract
Motor imagery electroencephalography is widely used in the brain-computer interface systems. Due to inherent characteristics of electroencephalography signals, accurate and real-time multiclass classification is always challenging. In order to solve this problem, a multiclass posterior probability solution for twin SVM is proposed by the ranking continuous output and pairwise coupling in this paper. First, two-class posterior probability model is constructed to approximate the posterior probability by the ranking continuous output techniques and Platt’s estimating method. Secondly, a solution of multiclass probabilistic outputs for twin SVM is provided by combining every pair of class probabilities according to the method of pairwise coupling. Finally, the proposed method is compared with multiclass SVM and twin SVM via voting, and multiclass posterior probability SVM using different coupling approaches. The efficacy on the classification accuracy and time complexity of the proposed method has been demonstrated by both the UCI benchmark datasets and real world EEG data from BCI Competition IV Dataset 2a, respectively.
Reference Key
she2015computationalmulticlass Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Qingshan She;Yuliang Ma;Ming Meng;Zhizeng Luo
Journal Organic Chemistry Frontiers
Year 2015
DOI
10.1155/2015/251945
URL
http://dx.doi.org/10.1155/2015/251945
Keywords
computer applications to medicine medical informaticsneurosciences neuropsychiatry biological psychiatry

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