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)
SparseVectorStorage(Map<Integer,? extends Serializable> map, boolean cp)

Method Summary

Modifier and Type	Method and Description
double[]	data() Gets underlying array if StorageOpsMetrics.isArrayBased() returns true and all values in vector are Numbers.
boolean	equals(Object o)
double	get(int i) Gets element from vector by index and cast it to double.
<T extends Serializable> T	getRaw(int i)
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	isNumeric()
Serializable[]	rawData()
void	readExternal(ObjectInput in)
void	set(int i, double v)
void	setRaw(int i, Serializable 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,? extends Serializable> map,
                           boolean cp)

SparseVectorStorage

public SparseVectorStorage(int size)

Parameters:

size - Vector size.

Method Detail

size

public int size()

Specified by:

size in interface VectorStorage

get

public double get(int i)

Gets element from vector by index and cast it to double.

Specified by:

get in interface VectorStorage

Parameters:

i - Vector element index.

Returns:

Value obtained for given element index.

getRaw

public <T extends Serializable> T getRaw(int i)

Specified by:

getRaw in interface VectorStorage

Type Parameters:

T - Type of stored element in vector.

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.

setRaw

public void setRaw(int i,
                   Serializable v)

Specified by:

setRaw 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

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

isArrayBased

public boolean isArrayBased()

Checks if implementation is based on Java arrays.

Specified by:

isArrayBased in interface StorageOpsMetrics

isNumeric

public boolean isNumeric()

Specified by:

isNumeric in interface StorageOpsMetrics

Returns:

true if all stored data are values of Number class.

data

public double[] data()

Gets underlying array if StorageOpsMetrics.isArrayBased() returns true and all values in vector are Numbers. Returns null if in other cases.

Specified by:

data in interface VectorStorage

See Also:

StorageOpsMetrics.isArrayBased()

rawData

public Serializable[] rawData()

Specified by:

rawData in interface VectorStorage

Returns:

Underlying array of serializable objects StorageOpsMetrics.isArrayBased() returns true. Returns null if in other cases.

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()