Detect outlier first, if you data set maybe contain outlier.

Try the isolationForest method, it's fast and efficient to detect the outliers.

Detect outlier first, if you data set maybe contain outlier.

Try the isolationForest method, it's fast and efficient to detect the outliers.

update:

isolationForest

papers:https://cs.nju.edu.cn/zhouzh/zhouzh.files/publication/tkdd11.pdf

python code:http://scikit-learn.org/dev/modules/generated/sklearn.ensemble.IsolationForest.html