:: Experimental :: Imputation estimator for completing missing values, either using the mean or the median of the column in which the missing values are located.
:: Experimental :: Model fitted by Imputer.
:: Experimental :: Model fitted by Imputer.
Created by hollinwilkins on 12/27/16.
Created by hollinwilkins on 12/27/16.
Created by hollinwilkins on 1/18/17.
:: Experimental :: Imputation estimator for completing missing values, either using the mean or the median of the column in which the missing values are located. The input column should be of DoubleType or FloatType. Currently Imputer does not support categorical features yet (SPARK-15041) and possibly creates incorrect values for a categorical feature.
Note that the mean/median value is computed after filtering out missing values. All Null values in the input column are treated as missing, and so are also imputed.