de.lmu.ifi.dbs.elki.data

Class IntegerVector

java.lang.Object

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

de.lmu.ifi.dbs.elki.data.IntegerVector

All Implemented Interfaces:

FeatureVector<Number>, NumberVector, SpatialComparable

public class IntegerVector
extends AbstractNumberVector

Vector type using int[] storage.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IntegerVector.Factory Factory for integer vectors.
static class	IntegerVector.ShortSerializer Serialization class for dense integer vectors with up to Short.MAX_VALUE dimensions, by using a short for storing the dimensionality.
static class	IntegerVector.SmallSerializer Serialization class for dense integer vectors with up to 127 dimensions, by using a byte for storing the dimensionality.
static class	IntegerVector.VariableSerializer Serialization class for variable dimensionality by using VarInt encoding.

Field Summary

Fields

Modifier and Type	Field and Description
static ByteBufferSerializer<IntegerVector>	BYTE_SERIALIZER Serializer for up to 127 dimensions.
static ByteBufferSerializer<IntegerVector>	SHORT_SERIALIZER Serializer for up to 2^15-1 dimensions.
static IntegerVector.Factory	STATIC Static instance (object factory).
private int[]	values Keeps the values of the real vector.
static ByteBufferSerializer<IntegerVector>	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
	IntegerVector(int[] values) Create an IntegerVector consisting of the given integer values.
private	IntegerVector(int[] values, boolean nocopy) Private constructor.

Method Summary

Methods

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.
Integer	getValue(int dimension) Deprecated.
int[]	getValues() Get a copy of the raw int[] 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.
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, shortValue

Methods inherited from class java.lang.Object

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

Field Detail

STATIC

public static final IntegerVector.Factory STATIC

Static instance (object factory).

BYTE_SERIALIZER

public static final ByteBufferSerializer<IntegerVector> BYTE_SERIALIZER

Serializer for up to 127 dimensions.

SHORT_SERIALIZER

public static final ByteBufferSerializer<IntegerVector> SHORT_SERIALIZER

Serializer for up to 2^15-1 dimensions.

VARIABLE_SERIALIZER

public static final ByteBufferSerializer<IntegerVector> VARIABLE_SERIALIZER

Serializer using varint encoding.

values

private final int[] values

Keeps the values of the real vector.

Constructor Detail

IntegerVector

private IntegerVector(int[] values,
             boolean nocopy)

Private constructor. NOT for public use.

Parameters:

values - Value data

nocopy - Flag to use without copying.

IntegerVector

public IntegerVector(int[] values)

Create an IntegerVector consisting of the given integer values.

Parameters:

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

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 Integer 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

getValues

public int[] getValues()

Get a copy of the raw int[] 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