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Jul 21, 2016
DWT-Based Application of SVD and SVM Techniques to Seismic Signal Classifications
Authors: Xueyi Shang, Kang Peng [email protected], Zhenyu Zhang, and Yongliang ZhangAuthor Affiliations
Publication: Geo-China 2016
Abstract
Seismic event and quarry blast classification is one of key issues in seismic data processing. However, automatic microseism classification is still a challenging work in practice. In this paper, based on discrete wavelet transform (DWT), a novel approach combining singular value decomposition (SVD) and support vector machine (SVM) techniques was proposed to categorize seismic signals. Firstly, the DWT was used to obtain wavelet coefficients, then correlation coefficient and variance contribution ratio were proposed to choose main wavelet coefficients. After that, the SVD was employed to compress data and extract features of the selected main wavelet coefficients. Finally, the BP neural network, Bayes and SVM classifiers were implemented to identify seismic events and quarry blasts of Yongshaba Mine, China. The results show that SVD can effectively reflect signal features and classification results of SVM is better than BP neural network and Bayes in accuracy, specificity and sensitivity, being the value of 95.5%, 97.0% and 94.0%, respectively. Thus DWT-based SVD and SVM techniques provide a useful method for seismic event and quarry blast classification.
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© 2016 American Society of Civil Engineers.
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Published online: Jul 21, 2016
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Xueyi Shang
Ph.D. Candidate, School of Resources and Safety Engineering, Central South Univ., Changsha 410083, China.
Associate Professor, State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Univ., Chongqing 400044, China; Associate Professor, College of Resources and Environmental Science, Chongqing Univ., Chongqing 400030, China. E-mail: [email protected]
Zhenyu Zhang
Associate Professor, State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing Univ., Chongqing 400044, China; Associate Professor, College of Resources and Environmental Science, Chongqing Univ., Chongqing 400030, China.
Yongliang Zhang
Associate Professor, Automotive School, Qingdao Technological Univ., Qingdao, Shandong 266520, China.
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