org.apache.ignite.ml.math.impls.vector

Class PivotedVectorView

java.lang.Object

org.apache.ignite.ml.math.impls.vector.AbstractVector

org.apache.ignite.ml.math.impls.vector.PivotedVectorView

All Implemented Interfaces:

Externalizable, Serializable, Destroyable, MetaAttributes, StorageOpsMetrics, Vector

public class PivotedVectorView
extends AbstractVector

Pivoted (index mapped) view over another vector.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.ignite.ml.math.Vector

Vector.Element

Constructor Summary

Constructors

Constructor and Description
PivotedVectorView()
PivotedVectorView(Vector vec, int[] pivot)
PivotedVectorView(Vector vec, int[] pivot, int[] unpivot)

Method Summary

Modifier and Type	Method and Description
Vector	copy() Creates new copy of this vector.
Vector	getBaseVector()
Vector	like(int crd) Creates new empty vector of the same underlying class but of different cardinality.
Matrix	likeMatrix(int rows, int cols) Creates new matrix of compatible flavor with given size.
protected Vector.Element	makeElement(int idx)
int	pivot(int i)
void	readExternal(ObjectInput in)
Vector	times(double x) Gets a new vector that contains product of each element and the argument.
int	unpivot(int i)
void	writeExternal(ObjectOutput out)

Methods inherited from class org.apache.ignite.ml.math.impls.vector.AbstractVector

all, allSpliterator, assign, assign, assign, assign, checkCardinality, checkCardinality, checkCardinality, checkIndex, compute, cross, destroy, divide, dot, dotSelf, equals, foldMap, foldMap, get, getDistanceSquared, getElement, getLengthSquared, getMetaStorage, getStorage, getX, guid, hashCode, increment, incrementX, isArrayBased, isDense, isDistributed, isRandomAccess, isSequentialAccess, isZero, kNorm, logNormalize, logNormalize, map, map, map, maxElement, maxValue, minElement, minus, minValue, nonZeroElements, nonZeroes, nonZeroSpliterator, normalize, normalize, plus, plus, set, setStorage, setX, size, sort, storageGet, storageSet, sum, times, toMatrix, toMatrixPlusOne, viewPart

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.ignite.ml.math.MetaAttributes

getAttribute, hasAttribute, removeAttribute, setAttribute

Constructor Detail

PivotedVectorView

public PivotedVectorView(Vector vec,
                         int[] pivot,
                         int[] unpivot)

Parameters:

vec - Parent vector.

pivot - Mapping from external index to internal.

unpivot - Mapping from internal index to external.

PivotedVectorView

public PivotedVectorView(Vector vec,
                         int[] pivot)

Parameters:

vec - Parent vector.

pivot - Mapping from external index to internal.

PivotedVectorView

public PivotedVectorView()

Method Detail

getBaseVector

public Vector getBaseVector()

Returns:

Parent vector.

pivot

public int pivot(int i)

Parameters:

i - Index to pivot.

Returns:

Mapping from external index to internal for given index.

unpivot

public int unpivot(int i)

Parameters:

i - Index to unpivot.

Returns:

Mapping from internal index to external for given index.

makeElement

protected Vector.Element makeElement(int idx)

Overrides:

makeElement in class AbstractVector

Parameters:

idx - Index of vector element.

Returns:

Vector element at given index.

copy

public Vector copy()

Creates new copy of this vector.

Specified by:

copy in interface Vector

Overrides:

copy in class AbstractVector

Returns:

New copy vector.

like

public Vector like(int crd)

Creates new empty vector of the same underlying class but of different cardinality.

Parameters:

crd - Cardinality for new vector.

Returns:

New vector.

likeMatrix

public Matrix likeMatrix(int rows,
                         int cols)

Creates new matrix of compatible flavor with given size.

Parameters:

rows - Number of rows.

cols - Number of columns.

Returns:

New matrix.

times

public Vector times(double x)

Gets a new vector that contains product of each element and the argument.

Specified by:

times in interface Vector

Overrides:

times in class AbstractVector

Parameters:

x - Multiply argument.

Returns:

New vector.

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class AbstractVector

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class AbstractVector

Throws:

IOException

ClassNotFoundException