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Screening of Abnormal Values Based on Centrifugal Rate

Xiaoli Zhang
2019 IOP Conference Series: Materials Science and Engineering  
In this paper, an outlier screening method based on centrifugal rate is proposed to screen outliers in data, which is to use the size of centrifugal rate to determine whether the data is significantly larger or smaller than other normal values of centrifugal rate. Taking the mean of data as the center, the distance between any point and the mean as the long half axis of the ellipse, and the distance between the normal dimension as the center, the model is established. The eccentricity based on
more » ... entricity based on the mean can be obtained, and so on, the eccentricity of all data based on the mean can be obtained. Finally, the centrifugal rate which deviates from the average centrifugal rate obviously surpasses other data is listed as the abnormal value, and the abnormal value is eliminated.
doi:10.1088/1757-899x/569/3/032016 fatcat:4qfo7tsus5aqfne72yqrmhgd5i