Package at.tuwien.ifs.somtoolbox.layers.quality

Classes in this package implement various quality measures, indicating the quality of the SOM mapping.

See:
          Description

Interface Summary
QualityMeasure All quality measure algorithm implementations should implement this interface.
 

Class Summary
AbstractQualityMeasure Provides basic functionality for quality measure algorithms.
EntropyAndPurityCalculator  
EntropyMeasure Implementation of SOM Entropy Measure.
IntrinsicDistance Implementation of Intrinsic Distance Quality
InversionMeasure Implementation of SOM Inversion Measure for multidimenional Inputdata.
MetricMultiScaling Implementation of the SOM Metric Multidimensional Scaling Measure.
PseudoSilhouetteValue  
QuantizationError Calculates the Quantisation Error, defined as the average distance between and input data vector and the weight-vector of its best-matching-unit.
Calculates the following values: Unit Quantisation error (qe).
SammonMeasure Sammon Measure for Self Organizing Maps (Sammon 1969)
SilhouetteValue  
SOMDistortion Implementation of SOM Distortion Measure Quality.
SOMSilhouetteValue  
Spearman  
SpearmanCoefficient Implementation of SOM Spearman Coeffizient.
TopographicError Implementation of Topographic Error Quality Measure.
TODO: can maybe be optimised using data winner mapping file (SOMLibDataWinnerMapping).
TopographicFunction Implementation of Topographic Function Quality Measure
More Infos: T.
TopographicProduct Implementation of Topographic Product Quality Measure.
More Infos: H.U.
Trustworthiness_NeighborhoodPreservation Implematation of Trustworthiness and Neighborhood preservation Quality Measures
 

Exception Summary
QualityMeasureNotFoundException Is thrown if a quality measure can not be found.
 

Package at.tuwien.ifs.somtoolbox.layers.quality Description

Classes in this package implement various quality measures, indicating the quality of the SOM mapping. New classes should implement the QualityMeasure, or extend the abstract base implementation AbstractQualityMeasure.

See Also:
QualityMeasure, AbstractQualityMeasure