meshi.optimizers
Class LineSearch

java.lang.Object
  meshi.optimizers.LineSearch

Direct Known Subclasses:

SimpleStepLength, WolfConditionLineSearch

public abstract class LineSearch
extends java.lang.Object

An abstract class of the common function calls in all the Line-Search procedure. If the simulation is at point Xk,and a descent direction is Pk, findStepLength gives a scalar Ak, that says how much to travel along Pk. So that Xk+1 = Xk + Ak*Pk. The coordinates of the initial point (Xk) should be given in the first column of the argument 'coordinates'. The direction of search (Pk) (direction + magnitude) from the initial point sould be given in the second column of 'coordinates'.

Field Summary

protected TotalEnergy

energy

Constructor Summary

LineSearch(TotalEnergy energy)

Method Summary

abstract double

findStepLength(double[][] coordinates)

Methods inherited from class java.lang.Object

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

Field Detail

energy

protected TotalEnergy energy

Constructor Detail

LineSearch

public LineSearch(TotalEnergy energy)

Method Detail

findStepLength

public abstract double findStepLength(double[][] coordinates)
                               throws LineSearchException

Throws:

LineSearchException