tailieunhanh - Báo cáo hóa học: " Research Article Classification of Pulse Waveforms Using Edit Distance with Real Penalty"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Classification of Pulse Waveforms Using Edit Distance with Real Penalty | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010 Article ID 303140 8 pages doi 2010 303140 Research Article Classification of Pulse Waveforms Using Edit Distance with Real Penalty Dongyu Zhang 1 Wangmeng Zuo 1 David Zhang 1 2 Hongzhi Zhang 1 and Naimin Li1 1 Biocomputing Research Centre School of Computer Science and Technology Harbin Institute of Technology Harbin 150001 China 2 Shenzhen Graduate School Harbin Institute of Technology Shenzhen 518055 China Correspondence should be addressed to Wangmeng Zuo cswmzuo@ Received 13 March 2010 Revised 12 June 2010 Accepted 25 August 2010 Academic Editor Christophoros Nikou Copyright 2010 Dongyu Zhang et al. 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. Advances in sensor and signal processing techniques have provided effective tools for quantitative research in traditional Chinese pulse diagnosis TCPD . Because of the inevitable intraclass variation of pulse patterns the automatic classification of pulse waveforms has remained a difficult problem. In this paper by referring to the edit distance with real penalty ERP and the recent progress in fc-nearest neighbors KNN classifiers we propose two novel ERP-based KNN classifiers. Taking advantage of the metric property of ERP we first develop an ERP-induced inner product and a Gaussian ERP kernel then embed them into difference-weighted KNN classifiers and finally develop two novel classifiers for pulse waveform classification. The experimental results show that the proposed classifiers are effective for accurate classification of pulse waveform. 1. Introduction Traditional Chinese pulse diagnosis TCPD is a convenient noninvasive and effective diagnostic method that has been widely used in traditional Chinese medicine TCM 1 . In TCPD practitioners feel .