train_randomforest_regr(array features, double target [, string options]) – Returns a relation consists of Platforms: WhereOS,

train_randomforest_regressor(array features, double target [, string options]) – Returns a relation consists of Platforms: WhereOS,

train_randomforest_classifier(array features, int label [, const string options, const array classWeights])- Returns a relation consists

train_perceptron(list features, int label [, const string options]) – Returns a relation consists of Build

train_plsa(array words[, const string options]) – Returns a relation consists of Platforms: WhereOS, Spark, Hive

train_pa2a_regr(array features, float target [, constant string options]) – Returns a relation consists of `(int|bigint|string)