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On Calculation of Grey Correlation Grade for Logs.

Chen Qiang, Xie Shuo. WLT, 2000, 24(6): 445-447  
Four grey correlation grades of log data are calculated and analysed geometrically and physically in this paper. Compared with correlation coefficient, the results show that grey correlation grade of logs can be used to quantitatively evaluate the relationships among logs and identify their degrees. Correlation coefficient is heavily affected by partial log data while grey correlation grade has strong stability to noise.
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