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Changes:修正版迭代方差计算，消除了无限递增的问题，但是具体计算公式需要后期再确认

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孙凯文
2022-05-30 16:42:42 +08:00
parent cbf24656f9
commit 61dcd34d09
1 changed files with 1 additions and 1 deletions
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variance_x.py
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@@ -27,6 +27,6 @@ class variance_x(algorithm):
self.var_ = 0 self.var_ = 0
else: else:
present_avg_ = self.avg_ * (self.window_length_ - 1)/self.window_length_ + value / self.window_length_ present_avg_ = self.avg_ * (self.window_length_ - 1)/self.window_length_ + value / self.window_length_
self.var_ = self.var_ +(value - present_avg_) * (value-self.avg_) self.var_ = self.var_ +(value - present_avg_) * (value-self.avg_) / (present_avg_ - self.avg_)
self.avg_ = present_avg_ self.avg_ = present_avg_
return self.var_ return self.var_