Feature Transformation -- ElementwiseProduct

Usage

ft_elementwise_product(x, input_col = NULL, output_col = NULL, scaling_col)

Arguments

x
An object (usually a spark_tbl) coercable to a Spark DataFrame.
input_col
The name of the input column(s).
output_col
The name of the output column.
scaling_col
The column used to scale input_col.

Description

Computes the element-wise product between two columns. Generally, this is intended as a scaling transformation, where an input vector is scaled by another vector, but this should apply for all element-wise product transformations.

See also

See http://spark.apache.org/docs/latest/ml-features.html for more information on the set of transformations available for DataFrame columns in Spark. Other feature transformation routines: ft_binarizer, ft_bucketizer, ft_discrete_cosine_transform, ft_index_to_string, ft_one_hot_encoder, ft_quantile_discretizer, ft_sql_transformer, ft_string_indexer, ft_vector_assembler, sdf_mutate