de.lmu.ifi.dbs.elki.evaluation.outlier

Class OutlierROCCurve

java.lang.Object

de.lmu.ifi.dbs.elki.evaluation.outlier.OutlierROCCurve

All Implemented Interfaces:

Evaluator, ResultProcessor

@Alias(value={"ComputeROCCurve","de.lmu.ifi.dbs.elki.evaluation.roc.ComputeROCCurve"})
public class OutlierROCCurve
extends Object
implements Evaluator

Compute a ROC curve to evaluate a ranking algorithm and compute the corresponding ROCAUC value. The parameter -rocauc.positive specifies the class label of "positive" hits. The nested algorithm -algorithm will be run, the result will be searched for an iterable or ordering result, which then is compared with the clustering obtained via the given class label.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	OutlierROCCurve.Parameterizer Parameterization class.
static class	OutlierROCCurve.ROCResult Result object for ROC curves.

Field Summary

Fields

Modifier and Type	Field and Description
private static Logging	LOG The logger.
static OptionID	POSITIVE_CLASS_NAME_ID The pattern to identify positive classes.
private Pattern	positiveClassName Stores the "positive" class.
static String	ROCAUC_LABEL The label we use for marking ROCAUC values.

Constructor Summary

Constructors

Constructor and Description
OutlierROCCurve(Pattern positive_class_name) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
private OutlierROCCurve.ROCResult	computeROCResult(int size, SetDBIDs positiveids, DBIDs order)
private OutlierROCCurve.ROCResult	computeROCResult(int size, SetDBIDs positiveids, OutlierResult or)
void	processNewResult(HierarchicalResult baseResult, Result result) Process a result.

Methods inherited from class java.lang.Object

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

Field Detail

ROCAUC_LABEL

public static final String ROCAUC_LABEL

The label we use for marking ROCAUC values.

See Also:

Constant Field Values

LOG

private static final Logging LOG

The logger.

POSITIVE_CLASS_NAME_ID

public static final OptionID POSITIVE_CLASS_NAME_ID

The pattern to identify positive classes.

Key: -rocauc.positive

positiveClassName

private Pattern positiveClassName

Stores the "positive" class.

Constructor Detail

OutlierROCCurve

public OutlierROCCurve(Pattern positive_class_name)

Constructor.

Parameters:

positive_class_name - Positive class name pattern

Method Detail

computeROCResult

private OutlierROCCurve.ROCResult computeROCResult(int size,
                                         SetDBIDs positiveids,
                                         DBIDs order)

computeROCResult

private OutlierROCCurve.ROCResult computeROCResult(int size,
                                         SetDBIDs positiveids,
                                         OutlierResult or)

processNewResult

public void processNewResult(HierarchicalResult baseResult,
                    Result result)

Description copied from interface: ResultProcessor

Process a result.

Specified by:

processNewResult in interface ResultProcessor

Parameters:

baseResult - The base of the result tree.

result - Newly added result subtree.