At the same time some problems, such as negative correlation, selection of correlation coefficient, are discussed also.
同时，也对指标间的负相关、相关系数的选择等问题进行了探讨。
2
This criterion can suppress the affection of minutiae to correlationcoefficient and get a more accurate stopping time without knowing the noise variance.
The time sequence, which is plus correlation with mean value of consistency value series and minus correlation with variance of consistency value series, is used as weight coefficient for sensor.