org.apache.spark.mllib.linalg

Class Vectors

Object

org.apache.spark.mllib.linalg.Vectors

public class Vectors
extends Object

Constructor Summary

Constructors

Constructor and Description
Vectors()

Method Summary

Methods

Modifier and Type	Method and Description
static Vector	dense(double[] values) Creates a dense vector from a double array.
static Vector	dense(double firstValue, double... otherValues) Creates a dense vector from its values.
static Vector	dense(double firstValue, scala.collection.Seq<Object> otherValues) Creates a dense vector from its values.
static Vector	sparse(int size, int[] indices, double[] values) Creates a sparse vector providing its index array and value array.
static Vector	sparse(int size, Iterable<scala.Tuple2<Integer,Double>> elements) Creates a sparse vector using unordered (index, value) pairs in a Java friendly way.
static Vector	sparse(int size, scala.collection.Seq<scala.Tuple2<Object,Object>> elements) Creates a sparse vector using unordered (index, value) pairs.

Methods inherited from class Object

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

Constructor Detail

Vectors

public Vectors()

Method Detail

dense

public static Vector dense(double firstValue,
           double... otherValues)

Creates a dense vector from its values.

dense

public static Vector dense(double firstValue,
           scala.collection.Seq<Object> otherValues)

Creates a dense vector from its values.

dense

public static Vector dense(double[] values)

Creates a dense vector from a double array.

sparse

public static Vector sparse(int size,
            int[] indices,
            double[] values)

Creates a sparse vector providing its index array and value array.

Parameters:

size - vector size.

indices - index array, must be strictly increasing.

values - value array, must have the same length as indices.

sparse

public static Vector sparse(int size,
            scala.collection.Seq<scala.Tuple2<Object,Object>> elements)

Creates a sparse vector using unordered (index, value) pairs.

Parameters:

size - vector size.

elements - vector elements in (index, value) pairs.

sparse

public static Vector sparse(int size,
            Iterable<scala.Tuple2<Integer,Double>> elements)

Creates a sparse vector using unordered (index, value) pairs in a Java friendly way.

Parameters:

size - vector size.

elements - vector elements in (index, value) pairs.