org.apache.ignite.ml.math.primitives.vector.storage

Class SparseVectorStorage

java.lang.Object

org.apache.ignite.ml.math.primitives.vector.storage.SparseVectorStorage

All Implemented Interfaces:

Externalizable, Serializable, Destroyable, VectorStorage, StorageConstants, StorageOpsMetrics

public class SparseVectorStorage
extends Object
implements VectorStorage, StorageConstants

Sparse, local, on-heap vector storage.

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.apache.ignite.ml.math.StorageConstants

COLUMN_STORAGE_MODE, RANDOM_ACCESS_MODE, ROW_STORAGE_MODE, SEQUENTIAL_ACCESS_MODE, UNKNOWN_STORAGE_MODE

Constructor Summary

Constructors

Constructor and Description
SparseVectorStorage()
SparseVectorStorage(int size, int acsMode)
SparseVectorStorage(Map<Integer,Double> map, boolean cp)

Method Summary

Modifier and Type	Method and Description
double[]	data() Gets underlying array if StorageOpsMetrics.isArrayBased() returns true.
boolean	equals(Object o)
double	get(int i)
int	getAccessMode()
int	hashCode()
it.unimi.dsi.fastutil.ints.IntSet	indexes()
boolean	isArrayBased() Checks if implementation is based on Java arrays.
boolean	isDense() Checks if this implementation should be considered dense so that it explicitly represents every value.
boolean	isDistributed() Checks whether implementation is JVM-local or distributed (multi-JVM).
boolean	isRandomAccess() Checks if this implementation is optimized for random access.
boolean	isSequentialAccess() Checks if this implementation should be considered to be iterable in index order in an efficient way.
void	readExternal(ObjectInput in)
void	set(int i, double v)
int	size()
void	writeExternal(ObjectOutput out)

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.Destroyable

destroy

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

assertAccessMode, assertStorageMode

Constructor Detail

SparseVectorStorage

public SparseVectorStorage()

SparseVectorStorage

public SparseVectorStorage(Map<Integer,Double> map,
                           boolean cp)

SparseVectorStorage

public SparseVectorStorage(int size,
                           int acsMode)

Parameters:

size - Vector size.

acsMode - Access mode.

Method Detail

getAccessMode

public int getAccessMode()

Returns:

Vector elements access mode.

size

public int size()

Specified by:

size in interface VectorStorage

get

public double get(int i)

Specified by:

get in interface VectorStorage

Parameters:

i - Vector element index.

Returns:

Value obtained for given element index.

set

public void set(int i,
                double v)

Specified by:

set in interface VectorStorage

Parameters:

i - Vector element index.

v - Value to set at given index.

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

isSequentialAccess

public boolean isSequentialAccess()

Checks if this implementation should be considered to be iterable in index order in an efficient way.

Specified by:

isSequentialAccess in interface StorageOpsMetrics

isDense

public boolean isDense()

Checks if this implementation should be considered dense so that it explicitly represents every value.

Specified by:

isDense in interface StorageOpsMetrics

isRandomAccess

public boolean isRandomAccess()

Checks if this implementation is optimized for random access.

Specified by:

isRandomAccess in interface StorageOpsMetrics

isDistributed

public boolean isDistributed()

Checks whether implementation is JVM-local or distributed (multi-JVM).

Specified by:

isDistributed in interface StorageOpsMetrics

isArrayBased

public boolean isArrayBased()

Checks if implementation is based on Java arrays.

Specified by:

isArrayBased in interface StorageOpsMetrics

data

public double[] data()

Gets underlying array if StorageOpsMetrics.isArrayBased() returns true. Returns null if in other cases.

Specified by:

data in interface VectorStorage

See Also:

StorageOpsMetrics.isArrayBased()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

indexes

public it.unimi.dsi.fastutil.ints.IntSet indexes()