Extension of frequency-based dissimilarity for retrieving similar plasma waveforms
作者: Teruhisa HochinKatsumasa KoyamaHideya NakanishiMamoru Kojima
作者单位: 1Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
2Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Japan
3National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
刊名: Fusion Engineering and Design, 2007, Vol.83 (2), pp.417-420
来源数据库: Elsevier Journal
DOI: 10.1016/j.fusengdes.2007.12.024
关键词: Plasma waveformSimilaritySimilarity searchDistance
原始语种摘要: Abstract(#br)Some computer-aided assistance in finding the waveforms similar to a waveform has become indispensable for accelerating data analysis in the plasma experiments. For the slowly-varying waveforms and those having time-sectional oscillation patterns, the methods using the Fourier series coefficients of waveforms in calculating the dissimilarity have successfully improved the performance in retrieving similar waveforms. This paper treats severely-varying waveforms, and proposes two extensions to the dissimilarity of waveforms. The first extension is to capture the difference of the importance of the Fourier series coefficients of waveforms against frequency. The second extension is to consider the outlines of waveforms. The correctness of the extended dissimilarity is...
全文获取路径: Elsevier  (合作)
影响因子:0.842 (2012)