Package elki.data

Class ShortVector

java.lang.Object

elki.data.ShortVector

All Implemented Interfaces:

FeatureVector<java.lang.Number>, NumberVector, SpatialComparable

public class ShortVector
extends java.lang.Object
implements NumberVector

Vector type using short[] storage.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ShortVector.Factory	Factory for Short vectors.
static class	ShortVector.ShortSerializer	Serialization class for dense Short vectors with up to Short.MAX_VALUE dimensions, by using a short for storing the dimensionality.
static class	ShortVector.VariableSerializer	Serialization class for variable dimensionality by using VarInt encoding.

Field Summary

Fields

Modifier and Type	Field	Description
static ByteBufferSerializer<ShortVector>	SHORT_SERIALIZER	Serializer for up to 2^15-1 dimensions.
static ShortVector.Factory	STATIC	Static instance (object factory).
private short[]	values	Keeps the values of the real vector.
static ByteBufferSerializer<ShortVector>	VARIABLE_SERIALIZER	Serializer using varint encoding.

Fields inherited from interface elki.data.FeatureVector

TYPE

Fields inherited from interface elki.data.NumberVector

ATTRIBUTE_SEPARATOR, FIELD, FIELD_1D, FIELD_2D, VARIABLE_LENGTH

Constructor Summary

Constructors

Modifier	Constructor	Description
	ShortVector(short[] values)	Create an ShortVector consisting of the given Short values.
private	ShortVector(short[] values, boolean nocopy)	Private constructor.

Method Summary

Modifier and Type	Method	Description
double	doubleValue(int dimension)	Returns the value in the specified dimension as double.
int	getDimensionality()	The dimensionality of the vector space where of this FeatureVector of V is an element.
java.lang.Short	getValue(int dimension)	Deprecated.
short[]	getValues()	Get a copy of the raw short[] array.
long	longValue(int dimension)	Returns the value in the specified dimension as long.
short	shortValue(int dimension)	Returns the value in the specified dimension as short.
double[]	toArray()	Returns a double array copy of this vector.
java.lang.String	toString()	Returns a String representation of the FeatureVector of V as a line that is suitable to be printed in a sequential file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface elki.data.NumberVector

byteValue, floatValue, getMax, getMin, intValue

Field Detail

STATIC

public static final ShortVector.Factory STATIC

Static instance (object factory).

SHORT_SERIALIZER

public static final ByteBufferSerializer<ShortVector> SHORT_SERIALIZER

Serializer for up to 2^15-1 dimensions.

VARIABLE_SERIALIZER

public static final ByteBufferSerializer<ShortVector> VARIABLE_SERIALIZER

Serializer using varint encoding.

values

private final short[] values

Keeps the values of the real vector.

Constructor Detail

ShortVector

private ShortVector(short[] values,
                    boolean nocopy)

Private constructor. NOT for public use.

Parameters:

values - Value data

nocopy - Flag to use without copying.

ShortVector

public ShortVector(short[] values)

Create an ShortVector consisting of the given Short values.

Parameters:

values - the values to be set as values of the ShortVector

Method Detail

getDimensionality

public int getDimensionality()

Description copied from interface: FeatureVector

The dimensionality of the vector space where of this FeatureVector of V is an element.

Specified by:

getDimensionality in interface FeatureVector<java.lang.Number>

Specified by:

getDimensionality in interface SpatialComparable

Returns:

the number of dimensions of this FeatureVector of V

getValue

@Deprecated
public java.lang.Short getValue(int dimension)

Deprecated.

Returns the value of the specified attribute.

Specified by:

getValue in interface FeatureVector<java.lang.Number>

Specified by:

getValue in interface NumberVector

Parameters:

dimension - the selected attribute. Attributes are counted starting with 0.

Returns:

the value in the specified dimension

Throws:

java.lang.IllegalArgumentException - if the specified dimension is out of range of the possible attributes

doubleValue

public double doubleValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as double.

Note: this might seem redundant with respect to getValue(dim).doubleValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

doubleValue in interface NumberVector

Parameters:

dimension - the desired dimension, where 0 ≤ dimension < this.getDimensionality()

Returns:

the value in the specified dimension

longValue

public long longValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as long.

Note: this might seem redundant with respect to getValue(dim).longValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

longValue in interface NumberVector

Parameters:

dimension - the desired dimension, where 0 ≤ dimension < this.getDimensionality()

Returns:

the value in the specified dimension

shortValue

public short shortValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as short.

Note: this might seem redundant with respect to getValue(dim).shortValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

shortValue in interface NumberVector

Parameters:

dimension - the desired dimension, where 0 ≤ dimension < this.getDimensionality()

Returns:

the value in the specified dimension

getValues

public short[] getValues()

Get a copy of the raw short[] array.

Returns:

copy of values array.

toArray

public double[] toArray()

Description copied from interface: NumberVector

Returns a double array copy of this vector.

Specified by:

toArray in interface NumberVector

Returns:

Copy as double[]

toString

public java.lang.String toString()

Description copied from interface: FeatureVector

Returns a String representation of the FeatureVector of V as a line that is suitable to be printed in a sequential file.

Specified by:

toString in interface FeatureVector<java.lang.Number>

Overrides:

toString in class java.lang.Object

Returns:

a String representation of the FeatureVector of V