This paper puts forward a kind of fast and effective method of muting value based on the curvature formula, and it can automatically discern mutating data using half two rank difference method and get rid of the false data.

• 该方法以曲线的曲率公式为理论基础，用相邻点间的半二阶差分对突变点进行自动识别，并将其剔除。