de.lmu.ifi.dbs.elki.algorithm.outlier
Class GaussianModel<V extends NumberVector<V,Double>>

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.algorithm.AbstractAlgorithm<V,OutlierResult>
          de.lmu.ifi.dbs.elki.algorithm.outlier.GaussianModel<V>

Type Parameters:

V - Vector type

All Implemented Interfaces:

Algorithm<V,OutlierResult>, Parameterizable

@Title(value="Gaussian Model Outlier Detection")
@Description(value="Fit a multivariate gaussian model onto the data, and use the PDF to compute an outlier score.")
public class GaussianModel<V extends NumberVector<V,Double>>
extends AbstractAlgorithm<V,OutlierResult>

Outlier have smallest GMOD_PROB: the outlier scores is the probability density of the assumed distribution.

Author:

Lisa Reichert

Field Summary

static AssociationID<Double>	GMOD_PROB Association ID for the Gaussian model outlier probability
private boolean	invert Invert the result
private Flag	INVERT_FLAG Parameter to specify a scaling function to use.
static OptionID	INVERT_ID OptionID for INVERT_FLAG

Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debug, logger

Constructor Summary

GaussianModel(Parameterization config)
Constructor, adhering to Parameterizable

Method Summary

protected OutlierResult

runInTime(Database<V> database) The run method encapsulated in measure of runtime.

Methods inherited from class de.lmu.ifi.dbs.elki.algorithm.AbstractAlgorithm

isTime, isVerbose, run, setTime, setVerbose

Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debugFine, debugFiner, debugFinest, exception, progress, verbose, warning

Methods inherited from class java.lang.Object

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

Field Detail

INVERT_ID

public static final OptionID INVERT_ID

OptionID for INVERT_FLAG

INVERT_FLAG

private final Flag INVERT_FLAG

Parameter to specify a scaling function to use.

Key: -gaussod.invert

invert

private boolean invert

Invert the result

GMOD_PROB

public static final AssociationID<Double> GMOD_PROB

Association ID for the Gaussian model outlier probability

Constructor Detail

GaussianModel

public GaussianModel(Parameterization config)

Constructor, adhering to Parameterizable

Parameters:

config - Parameterization

Method Detail

runInTime

protected OutlierResult runInTime(Database<V> database)
                           throws IllegalStateException

Description copied from class: AbstractAlgorithm

The run method encapsulated in measure of runtime. An extending class needs not to take care of runtime itself.

Specified by:

runInTime in class AbstractAlgorithm<V extends NumberVector<V,Double>,OutlierResult>

Parameters:

database - the database to run the algorithm on

Returns:

the Result computed by this algorithm

Throws:

IllegalStateException - if the algorithm has not been initialized properly (e.g. the setParameters(String[]) method has been failed to be called).