de.aitools.iv.mds.core
Interface MDS

All Known Implementing Classes:

Chalmers1996MDS, Chalmers2003MDS, Jourdan2004MDS, Jourdan2004MultiscaleMDS, SpringModelMDS, Stein2006MDS

public interface MDS

Interface for mds algorithms.

Author:

Anita

Method Summary

java.util.HashMap<java.lang.String,java.lang.Object>	getConstants() Returns a HashMap with all available constant/parameter - value mappings for this algorithm.
java.util.HashMap<java.lang.String,java.lang.Object>	getStatistics() Returns a map with constants and parameters including name of the algorithm and element number.
double	getStress() Return the Stress-1 value of the point configuration.
double[][]	layOut(int[][] offs, double[][] vals) Returns an array of coordinates corresponding to the input indices.
void	setConstants(java.util.HashMap<java.lang.String,java.lang.Object> constants) Offers a possibility to overwrite the parameters and constants which are read from the algorithm-specific properties-file.

Method Detail

layOut

double[][] layOut(int[][] offs,
                  double[][] vals)

Returns an array of coordinates corresponding to the input indices. The dimension of the array is defined by the algorithm specific parameters.

Parameters:

offs - array of offset values

vals - array of corresponding values

Returns:

array representing point coordinates

getStress

double getStress()

Return the Stress-1 value of the point configuration.

Returns:

stress value of point configuration

getStatistics

java.util.HashMap<java.lang.String,java.lang.Object> getStatistics()

Returns a map with constants and parameters including name of the algorithm and element number.

Returns:

constants and parameters of the algorithm

setConstants

void setConstants(java.util.HashMap<java.lang.String,java.lang.Object> constants)

Offers a possibility to overwrite the parameters and constants which are read from the algorithm-specific properties-file. Keys which are not recognized for constants or parameters are ignored.

Parameters:

constants - HashMap with mappings of constant names to values.

getConstants

java.util.HashMap<java.lang.String,java.lang.Object> getConstants()

Returns a HashMap with all available constant/parameter - value mappings for this algorithm.

Returns:

available constants and values for this algorithm