wu haifeng

NPE stack: https://github.com/ShifuML/shifu/blob/develop/src/main/java/ml/shifu/shifu/udf/NormalizeUDF.java#L447 Dataset: CAM 2015 Weight column: usd_amount 

Currently, if the user doesn't specify the column names in the categorical.column.names file, all columns will treat as numeric except the target column.

Running comand example: ../shifu eval Eval1 -stab -type random -cols "column_3,column_4" the left screen shows the origin gain char, and the right shows the gain char injected random chaos on...

https://github.com/ShifuML/shifu/wiki/Variable-Selection-in-Shifu#how-to-do-quick-feature-selection-if--of-features--10000 Verify: David

Verifier: zexia


## Double 3.0 for this case "columnNum" : 6078, "columnName" : "s_rcvd_rto_30_90", "version" : "0.13.0", "columnType" : "N", "columnFlag" : "Candidate", "finalSelect" : true, "hybridThreshold" : 4.9E-324, "columnStats" : {...