de.lmu.ifi.dbs.elki.data

Class ShortVector

java.lang.Object

de.lmu.ifi.dbs.elki.data.AbstractNumberVector

de.lmu.ifi.dbs.elki.data.ShortVector

All Implemented Interfaces:

FeatureVector<Number>, NumberVector, SpatialComparable

public class ShortVector
extends AbstractNumberVector

Vector type using short[] storage.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and 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 and 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 class de.lmu.ifi.dbs.elki.data.AbstractNumberVector

ATTRIBUTE_SEPARATOR

Constructor Summary

Constructors

Modifier	Constructor and 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 and Description
double	doubleValue(int dimension) Returns the value in the specified dimension as double.
Vector	getColumnVector() Returns a Vector representing in one column and getDimensionality() rows the values of this NumberVector of V.
int	getDimensionality() The dimensionality of the vector space where of this FeatureVector of V is an element.
Short	getValue(int dimension) Deprecated.
short[]	getValues() Get a copy of the raw short[] array.
int	intValue(int dimension) Returns the value in the specified dimension as int.
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.
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 de.lmu.ifi.dbs.elki.data.AbstractNumberVector

byteValue, floatValue, getMax, getMin

Methods inherited from class java.lang.Object

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

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.

Returns:

the number of dimensions of this FeatureVector of V

getValue

@Deprecated
public Short getValue(int dimension)

Deprecated.

Returns the value of the specified attribute.

Parameters:

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

Returns:

the value in the specified dimension

Throws:

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.

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.

Parameters:

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

Returns:

the value in the specified dimension

intValue

public int intValue(int dimension)

Description copied from interface: NumberVector

Returns the value in the specified dimension as int. Note: this might seem redundant with respect to getValue(dim).intValue(), but usually this is much more efficient due to boxing/unboxing cost.

Specified by:

intValue in interface NumberVector

Overrides:

intValue in class AbstractNumberVector

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

Overrides:

shortValue in class AbstractNumberVector

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.

getColumnVector

public Vector getColumnVector()

Description copied from interface: NumberVector

Returns a Vector representing in one column and getDimensionality() rows the values of this NumberVector of V.

Returns:

a Matrix representing in one column and getDimensionality() rows the values of this NumberVector of V

toString

public 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<Number>

Overrides:

toString in class Object

Returns:

a String representation of the FeatureVector of V