weka.classifiers.lazy

Class LBR.Indexes

java.lang.Object

weka.classifiers.lazy.LBR.Indexes

All Implemented Interfaces:

java.io.Serializable, RevisionHandler

Enclosing class:

LBR

public class LBR.Indexes
extends java.lang.Object
implements java.io.Serializable, RevisionHandler

Class for handling instances and the associated attributes.

Enables a set of indexes to a given dataset to be created and used with an algorithm. This reduces the memory overheads and time required when manipulating and referencing Instances and their Attributes.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
boolean[]	m_AttIndexes the array attribute indexes
int	m_ClassIndex the Class Index for the data set
boolean[]	m_InstIndexes the array instance indexes
int	m_NumAttsSet the number of attributes "in use" or set to a the original value (true or false)
int	m_NumInstsSet the number of instances "in use" or set to a the original value (true or false)
int	m_NumSeqAttsSet the number of sequential attributes "in use" or set to a the original value (true or false)
int	m_NumSeqInstsSet the number of sequential instances "in use" or set to a the original value (true or false)
int[]	m_SequentialAttIndexes an array of attribute indexes that are set to either true or false
int[]	m_SequentialInstIndexes the array of instance indexes that are set to a either true or false

Constructor Summary

Constructors

Constructor and Description
Indexes(int numInstances, int numAtts, boolean value, int classIndex) constructor
Indexes(LBR.Indexes FromIndexes) constructor

Method Summary

Modifier and Type	Method and Description
boolean	getAttIndex(int index) Returns the boolean value at the specified index in the Attribute Indexes array
boolean	getInstanceIndex(int index) Returns the boolean value at the specified index in the Instance Index array
int	getNumAttributes() Returns the number of attributes in the dataset
int	getNumAttributesSet() Returns the number of attributes "in use"
int	getNumInstances() Returns the number of instances in the dataset
int	getNumInstancesSet() Returns the number of instances "in use"
java.lang.String	getRevision() Returns the revision string.
int	getSequentialAttIndex(int index) Returns the boolean value at the specified index in the Sequential Attribute Indexes array
int	getSequentialInstanceIndex(int index) Returns the boolean value at the specified index in the Sequential Instance Indexes array
int	getSequentialNumAttributes() Returns the number of attributes in the Sequential array
int	getSequentialNumInstances() Returns the number of instances in the Sequential array
boolean	isSequentialAttIndexValid() Returns whether or not the Sequential Attribute Index requires rebuilding due to a change
boolean	isSequentialInstanceIndexValid() Returns whether or not the Sequential Instance Index requires rebuilding due to a change
void	resetAttIndex(boolean value) Resets the boolean value in AttIndexes array
void	resetAttIndexTo(LBR.Indexes FromIndexes) Resets the boolean value in AttIndexes array based on another set of Indexes
void	resetDatasetBasedOn(LBR.Indexes FromIndexes) Resets the boolean values in Attribute and Instance array to reflect an empty dataset withthe same attributes set as in the incoming Indexes Object
void	resetInstanceIndex(boolean value) Resets the boolean value in the Instance Indexes array to a specified value
void	setAttIndex(int index, boolean value) Changes the boolean value at the specified index in the AttIndexes array
void	setAtts(int[] Attributes, boolean value) Changes the boolean value at the specified index in the InstIndexes array
void	setInstanceIndex(int index, boolean value) Changes the boolean value at the specified index in the InstIndexes array
void	setInsts(int[] Instances, boolean value) Changes the boolean value at the specified index in the InstIndexes array
void	setSequentialAttIndex(boolean value) A Sequential Attribute index is all those Attributes that are set to the specified value placed in a sequential array.
void	setSequentialDataset(boolean value) Sets both the Instance and Attribute indexes to a specified value
void	setSequentialInstanceIndex(boolean value) A Sequential Instance index is all those Instances that are set to the specified value placed in a sequential array.

Methods inherited from class java.lang.Object

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

Field Detail

m_InstIndexes

public boolean[] m_InstIndexes

the array instance indexes

m_AttIndexes

public boolean[] m_AttIndexes

the array attribute indexes

m_SequentialInstIndexes

public int[] m_SequentialInstIndexes

the array of instance indexes that are set to a either true or false

m_SequentialAttIndexes

public int[] m_SequentialAttIndexes

an array of attribute indexes that are set to either true or false

m_NumInstsSet

public int m_NumInstsSet

the number of instances "in use" or set to a the original value (true or false)

m_NumAttsSet

public int m_NumAttsSet

the number of attributes "in use" or set to a the original value (true or false)

m_NumSeqInstsSet

public int m_NumSeqInstsSet

the number of sequential instances "in use" or set to a the original value (true or false)

m_NumSeqAttsSet

public int m_NumSeqAttsSet

the number of sequential attributes "in use" or set to a the original value (true or false)

m_ClassIndex

public int m_ClassIndex

the Class Index for the data set

Constructor Detail

Indexes

public Indexes(int numInstances,
               int numAtts,
               boolean value,
               int classIndex)

constructor

Parameters:

numInstances - the number of instances in dataset

numAtts - the number of attributes in dataset

value - either true or false

classIndex - Set to -1 if you want class attribute switched on or the value of the instances class index will be switched of and the class attibute will not be considered.

Indexes

public Indexes(LBR.Indexes FromIndexes)

constructor

Parameters:

FromIndexes - the object you want to copy

Method Detail

setInstanceIndex

public void setInstanceIndex(int index,
                             boolean value)

Changes the boolean value at the specified index in the InstIndexes array

Parameters:

index - the index of the instance

value - the value to set at the specified index

setAtts

public void setAtts(int[] Attributes,
                    boolean value)

Changes the boolean value at the specified index in the InstIndexes array

Parameters:

Attributes - array of attributes

value - the value to set at the specified index

setInsts

public void setInsts(int[] Instances,
                     boolean value)

Changes the boolean value at the specified index in the InstIndexes array

Parameters:

Instances - array of instances

value - the value to set at the specified index

setAttIndex

public void setAttIndex(int index,
                        boolean value)

Changes the boolean value at the specified index in the AttIndexes array

Parameters:

index - the index of the instance

value - the value to set at the specified index

getInstanceIndex

public boolean getInstanceIndex(int index)

Returns the boolean value at the specified index in the Instance Index array

Parameters:

index - the index of the instance

Returns:

the boolean value at the specified index

getSequentialInstanceIndex

public int getSequentialInstanceIndex(int index)

Returns the boolean value at the specified index in the Sequential Instance Indexes array

Parameters:

index - the index of the instance

Returns:

the requested value

resetInstanceIndex

public void resetInstanceIndex(boolean value)

Resets the boolean value in the Instance Indexes array to a specified value

Parameters:

value - the value to set all indexes

resetDatasetBasedOn

public void resetDatasetBasedOn(LBR.Indexes FromIndexes)

Resets the boolean values in Attribute and Instance array to reflect an empty dataset withthe same attributes set as in the incoming Indexes Object

Parameters:

FromIndexes - the Indexes to be copied

resetAttIndex

public void resetAttIndex(boolean value)

Resets the boolean value in AttIndexes array

Parameters:

value - the value to set the attributes to

resetAttIndexTo

public void resetAttIndexTo(LBR.Indexes FromIndexes)

Resets the boolean value in AttIndexes array based on another set of Indexes

Parameters:

FromIndexes - the Indexes to be copied

getAttIndex

public boolean getAttIndex(int index)

Returns the boolean value at the specified index in the Attribute Indexes array

Parameters:

index - the index of the Instance

Returns:

the boolean value

getSequentialAttIndex

public int getSequentialAttIndex(int index)

Returns the boolean value at the specified index in the Sequential Attribute Indexes array

Parameters:

index - the index of the Attribute

Returns:

the requested value

getNumInstancesSet

public int getNumInstancesSet()

Returns the number of instances "in use"

Returns:

the number of instances "in use"

getNumInstances

public int getNumInstances()

Returns the number of instances in the dataset

Returns:

the number of instances in the dataset

getSequentialNumInstances

public int getSequentialNumInstances()

Returns the number of instances in the Sequential array

Returns:

the number of instances in the sequential array

getNumAttributes

public int getNumAttributes()

Returns the number of attributes in the dataset

Returns:

the number of attributes

getNumAttributesSet

public int getNumAttributesSet()

Returns the number of attributes "in use"

Returns:

the number of attributes "in use"

getSequentialNumAttributes

public int getSequentialNumAttributes()

Returns the number of attributes in the Sequential array

Returns:

the number of attributes in the sequentual array

isSequentialInstanceIndexValid

public boolean isSequentialInstanceIndexValid()

Returns whether or not the Sequential Instance Index requires rebuilding due to a change

Returns:

true if the sequential instance index needs rebuilding

isSequentialAttIndexValid

public boolean isSequentialAttIndexValid()

Returns whether or not the Sequential Attribute Index requires rebuilding due to a change

Returns:

true if the sequential attribute index needs rebuilding

setSequentialDataset

public void setSequentialDataset(boolean value)

Sets both the Instance and Attribute indexes to a specified value

Parameters:

value - the value for the Instance and Attribute indices

setSequentialInstanceIndex

public void setSequentialInstanceIndex(boolean value)

A Sequential Instance index is all those Instances that are set to the specified value placed in a sequential array. Each value in the sequential array contains the Instance index within the Indexes.

Parameters:

value - the sequential instance index

setSequentialAttIndex

public void setSequentialAttIndex(boolean value)

A Sequential Attribute index is all those Attributes that are set to the specified value placed in a sequential array. Each value in the sequential array contains the Attribute index within the Indexes

Parameters:

value - the sequential attribute index

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision