org.apache.spark.ml

Class functions

Object

org.apache.spark.ml.functions

public class functions
extends Object

Constructor Summary

Constructors

Constructor and Description
functions()

Method Summary

Modifier and Type	Method and Description
static Column	array_to_vector(Column v) Converts a column of array of numeric type into a column of dense vectors in MLlib.
static Column	vector_to_array(Column v, String dtype) Converts a column of MLlib sparse/dense vectors into a column of dense arrays.

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

functions

public functions()

Method Detail

vector_to_array

public static Column vector_to_array(Column v,
                                     String dtype)

Converts a column of MLlib sparse/dense vectors into a column of dense arrays.

Parameters:

v: - the column of MLlib sparse/dense vectors

dtype: - the desired underlying data type in the returned array

Returns:

an array<float> if dtype is float32, or array<double> if dtype is float64

Since:

3.0.0

array_to_vector

public static Column array_to_vector(Column v)

Converts a column of array of numeric type into a column of dense vectors in MLlib.

Parameters:

v: - the column of array<NumericType&gt type

Returns:

a column of type org.apache.spark.ml.linalg.Vector

Since:

3.1.0