jebl.math
Interface OrthogonalHints

public interface OrthogonalHints

Provides a means for giving an Orthogonal base optimiser (IE, OrthognalMinimum) hints about the function that may alow it to optimise better.

Author:

Matthew Goode

Nested Class Summary

static class

OrthogonalHints.Utils

Method Summary

int	getInternalParameterBoundaries(int parameter, double[] storage) A boundary is a value of a parameter for which values lower than the boundary and values higher than the boundary are better treated as two separate functions (IE, they are only piecewise connected), and minimisation should be performed over both ranges individually (and then the true minimum taken as the minimuma of the ranges)
OrderEnumerator	getSuggestedOrdering(OrderEnumerator defaultOrdering) If there is a "best" ordering to use it can be specified here, if not should return null

Method Detail

getSuggestedOrdering

OrderEnumerator getSuggestedOrdering(OrderEnumerator defaultOrdering)

If there is a "best" ordering to use it can be specified here, if not should return null

Parameters:

defaultOrdering - The ordering suggested by the optimiser, may be null!

Returns:

null, or default ordering if no known best ordering

getInternalParameterBoundaries

int getInternalParameterBoundaries(int parameter,
                                   double[] storage)

A boundary is a value of a parameter for which values lower than the boundary and values higher than the boundary are better treated as two separate functions (IE, they are only piecewise connected), and minimisation should be performed over both ranges individually (and then the true minimum taken as the minimuma of the ranges)

Returns:

the number of boundary locations stored in storage, or -1 if not enough room, or 0 if there are no boundaries (other than the normal parameter range)