sparklyr (version 0.3.3)

ft_elementwise_product: Feature Transformation -- ElementwiseProduct

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.

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.

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