ft_elementwise_product
From sparklyr v0.3.3
by Javier Luraschi
Feature Transformation -- ElementwiseProduct
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
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