Package com.yahoo.labs.samoa.instances

Class SparseInstanceData

java.lang.Object

com.yahoo.labs.samoa.instances.SparseInstanceData

All Implemented Interfaces:

InstanceData, java.io.Serializable

Direct Known Subclasses:

FilteredSparseInstanceData

public class SparseInstanceData
extends java.lang.Object
implements InstanceData

The Class SparseInstanceData.

Author:

abifet

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected double[]	attributeValues	The attribute values.
protected int[]	indexValues	The index values.
protected int	numberAttributes	The number of attributes.

Constructor Summary

Constructors

Constructor	Description
SparseInstanceData(double[] attributeValues, int[] indexValues, int numberAttributes)	Instantiates a new sparse instance data.
SparseInstanceData(int length)	Instantiates a new sparse instance data.

Method Summary

Modifier and Type	Method	Description
InstanceData	copy()	Produces a shallow copy of this instance data.
void	deleteAttributeAt(int position)	Deletes an attribute at the given position (0 to numAttributes() - 1).
double[]	getAttributeValues()	Gets the attribute values.
int[]	getIndexValues()	Gets the index values.
int	getNumberAttributes()	Gets the number attributes.
int	index(int indexAttribute)	Index.
void	insertAttributeAt(int position)	Inserts an attribute.
boolean	isMissing(int indexAttribute)	Checks if is missing.
boolean	isMissingSparse(int indexAttribute)	Checks if is missing sparse.
int	locateIndex(int index)	Locates the greatest index that is not greater than the given index.
int	numAttributes()	Gets the number of attributes.
int	numValues()	Num values.
void	setAttributeValues(double[] attributeValues)	Sets the attribute values.
void	setIndexValues(int[] indexValues)	Sets the index values.
void	setNumberAttributes(int numberAttributes)	Sets the number of attributes.
void	setValue(int attributeIndex, double d)	Sets the value.
double[]	toDoubleArray()	To double array.
double	value(int indexAttribute)	Value.
double	valueSparse(int indexAttribute)	Value sparse.

Methods inherited from class java.lang.Object

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

Field Detail

attributeValues

protected double[] attributeValues

The attribute values.

indexValues

protected int[] indexValues

The index values.

numberAttributes

protected int numberAttributes

The number of attributes.

Constructor Detail

SparseInstanceData

public SparseInstanceData(double[] attributeValues,
                          int[] indexValues,
                          int numberAttributes)

Instantiates a new sparse instance data.

Parameters:

attributeValues - the attribute values

indexValues - the index values

numberAttributes - the number attributes

SparseInstanceData

public SparseInstanceData(int length)

Instantiates a new sparse instance data.

Parameters:

length - the length

Method Detail

getAttributeValues

public double[] getAttributeValues()

Gets the attribute values.

Returns:

the attribute values

setAttributeValues

public void setAttributeValues(double[] attributeValues)

Sets the attribute values.

Parameters:

attributeValues - the new attribute values

getIndexValues

public int[] getIndexValues()

Gets the index values.

Returns:

the index values

setIndexValues

public void setIndexValues(int[] indexValues)

Sets the index values.

Parameters:

indexValues - the new index values

getNumberAttributes

public int getNumberAttributes()

Gets the number attributes.

Returns:

the number attributes

setNumberAttributes

public void setNumberAttributes(int numberAttributes)

Sets the number of attributes.

Parameters:

numberAttributes - the new number attributes

numAttributes

public int numAttributes()

Gets the number of attributes.

Specified by:

numAttributes in interface InstanceData

Returns:

the int

value

public double value(int indexAttribute)

Value.

Specified by:

value in interface InstanceData

Parameters:

indexAttribute - the index attribute

Returns:

the double

isMissing

public boolean isMissing(int indexAttribute)

Checks if is missing.

Specified by:

isMissing in interface InstanceData

Parameters:

indexAttribute - the index attribute

Returns:

true, if is missing

numValues

public int numValues()

Num values.

Specified by:

numValues in interface InstanceData

Returns:

the int

index

public int index(int indexAttribute)

Index.

Specified by:

index in interface InstanceData

Parameters:

indexAttribute - the index attribute

Returns:

the int

valueSparse

public double valueSparse(int indexAttribute)

Value sparse.

Specified by:

valueSparse in interface InstanceData

Parameters:

indexAttribute - the index attribute

Returns:

the double

isMissingSparse

public boolean isMissingSparse(int indexAttribute)

Checks if is missing sparse.

Specified by:

isMissingSparse in interface InstanceData

Parameters:

indexAttribute - the index attribute

Returns:

true, if is missing sparse

toDoubleArray

public double[] toDoubleArray()

To double array.

Specified by:

toDoubleArray in interface InstanceData

Returns:

the double[]

setValue

public void setValue(int attributeIndex,
                     double d)

Sets the value.

Specified by:

setValue in interface InstanceData

Parameters:

attributeIndex - the attribute index

d - the d

locateIndex

public int locateIndex(int index)

Locates the greatest index that is not greater than the given index.

Returns:

the internal index of the attribute index. Returns -1 if no index with this property could be found

deleteAttributeAt

public void deleteAttributeAt(int position)

Deletes an attribute at the given position (0 to numAttributes() - 1).

Specified by:

deleteAttributeAt in interface InstanceData

Parameters:

position - the attribute's position

insertAttributeAt

public void insertAttributeAt(int position)

Description copied from interface: InstanceData

Inserts an attribute.

Specified by:

insertAttributeAt in interface InstanceData

Parameters:

position - the indes

copy

public InstanceData copy()

Description copied from interface: InstanceData

Produces a shallow copy of this instance data.

Specified by:

copy in interface InstanceData

Returns:

the shallow copy