de.lmu.ifi.dbs.elki.evaluation.roc

Class ROC.DecreasingVectorIter

java.lang.Object

de.lmu.ifi.dbs.elki.evaluation.roc.ROC.DecreasingVectorIter

All Implemented Interfaces:

ROC.ScoreIter, IntegerComparator, ArrayIter, Iter

Enclosing class:

ROC

public static class ROC.DecreasingVectorIter
extends Object
implements ROC.ScoreIter, IntegerComparator, ArrayIter

Class to iterate over a number vector in decreasing order.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	pos Current position.
private int[]	sort Order of dimensions.
private NumberVector<?>	vec Data vector.

Constructor Summary

Constructors

Constructor and Description
ROC.DecreasingVectorIter(NumberVector<?> vec) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	advance() Moves the iterator forward to the next entry.
void	advance(int count) Moves the iterator forward or backward by the given offset.
int	compare(int x, int y) Compare two integers.
int	dim()
int	getOffset() Get current iterator offset.
void	retract() Moves the iterator backward to the previous entry.
void	seek(int off) Moves the iterator to the given position
boolean	tiedToPrevious() Test whether the score is the same as the previous objects score.
boolean	valid() Returns true if the iterator currently points to a valid object.

Methods inherited from class java.lang.Object

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

Field Detail

sort

private int[] sort

Order of dimensions.

vec

private NumberVector<?> vec

Data vector.

pos

int pos

Current position.

Constructor Detail

ROC.DecreasingVectorIter

public ROC.DecreasingVectorIter(NumberVector<?> vec)

Constructor.

Parameters:

vec - Vector to iterate over.

Method Detail

compare

public int compare(int x,
          int y)

Description copied from interface: IntegerComparator

Compare two integers.

Specified by:

compare in interface IntegerComparator

Parameters:

x - First int

y - Second int

Returns:

Comparison result

dim

public int dim()

valid

public boolean valid()

Description copied from interface: Iter

Returns true if the iterator currently points to a valid object.

Specified by:

valid in interface Iter

Returns:

a boolean value, whether the position is valid.

advance

public void advance()

Description copied from interface: Iter

Moves the iterator forward to the next entry.

Specified by:

advance in interface Iter

tiedToPrevious

public boolean tiedToPrevious()

Description copied from interface: ROC.ScoreIter

Test whether the score is the same as the previous objects score. When there is no previous result, implementations should return false!

Specified by:

tiedToPrevious in interface ROC.ScoreIter

Returns:

Boolean

getOffset

public int getOffset()

Description copied from interface: ArrayIter

Get current iterator offset.

Specified by:

getOffset in interface ArrayIter

Returns:

Iterator position

advance

public void advance(int count)

Description copied from interface: ArrayIter

Moves the iterator forward or backward by the given offset.

Specified by:

advance in interface ArrayIter

Parameters:

count - offset to move forward or backwards

retract

public void retract()

Description copied from interface: ArrayIter

Moves the iterator backward to the previous entry.

Specified by:

retract in interface ArrayIter

seek

public void seek(int off)

Description copied from interface: ArrayIter

Moves the iterator to the given position

Specified by:

seek in interface ArrayIter

Parameters:

off - Seek offset