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《Computer Engineering and Applications》 2007-31
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Method of time-sequence curve’s expression and its recognition.

LI Guo-he,JIANG Xi.Department of Computer Science and Technology,China University of Petroleum,Beijing 102249,China  
In order to recognize time-sequence curves,along with the x-axis direction and by means of averagely dividing 0°~180° into small intervals,standard codes are adopted to express the general tendence of the curves in general.On the basis of standard codes,corresponding revisal codes are also adopted to express the deviation from standard codes.In fact,both codes describe the shapes of curves exactly.A similarity function is defined to compute the similarity between a curve and another one,which in most cases are not of the same length.The method described above is proved effective in the recognition of sediment microfacies by well-logging curves from the Luliang Area of Xinjiang Kelamayi Oil Field.
【Fund】: 国家自然科学基金(the National Natural Science Foundation of China under Grant No.60473125);; 中国石油天然气集团公司(CNPC)石油科技中青年创新基金( No.05E7013)
【CateGory Index】: TP391.4
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