#include <math_NewtonMinimum.hxx>
Public Member Functions | |
void * | operator new (size_t, void *anAddress) |
void * | operator new (size_t size) |
void | operator delete (void *anAddress) |
Standard_EXPORT | math_NewtonMinimum (math_MultipleVarFunctionWithHessian &F, const math_Vector &StartingPoint, const Standard_Real Tolerance=1.0e-7, const Standard_Integer NbIterations=40, const Standard_Real Convexity=1.0e-6, const Standard_Boolean WithSingularity=Standard_True) |
-- Given the starting point StartingPoint, The tolerance required on the solution is given by Tolerance. Iteration are stopped if (!WithSingularity) and H(F(Xi)) is not definite positive (if the smaller eigenvalue of H < Convexity) or IsConverged() returns True for 2 successives Iterations. Warning: Obsolete Constructor (because IsConverged can not be redefined with this. ) | |
Standard_EXPORT | math_NewtonMinimum (math_MultipleVarFunctionWithHessian &F, const Standard_Real Tolerance=1.0e-7, const Standard_Integer NbIterations=40, const Standard_Real Convexity=1.0e-6, const Standard_Boolean WithSingularity=Standard_True) |
The tolerance required on the solution is given by Tolerance. Iteration are stopped if (!WithSingularity) and H(F(Xi)) is not definite positive (if the smaller eigenvalue of H < Convexity) or IsConverged() returns True for 2 successives Iterations. Warning: This constructor do not computation . | |
virtual Standard_EXPORT void | Delete () |
virtual Standard_EXPORT | ~math_NewtonMinimum () |
Standard_EXPORT void | Perform (math_MultipleVarFunctionWithHessian &F, const math_Vector &StartingPoint) |
Search the solution. . | |
virtual Standard_EXPORT Standard_Boolean | IsConverged () const |
This method is called at the end of each iteration to check the convergence : || Xi+1 - Xi || < Tolerance or || F(Xi+1) - F(Xi)|| < Tolerance * || F(Xi) || It can be redefined in a sub-class to implement a specific test. . | |
Standard_Boolean | IsDone () const |
Tests if an error has occured. . | |
Standard_Boolean | IsConvex () const |
Tests if the Function is convexe during optimization. . | |
const math_Vector & | Location () const |
returns the location vector of the minimum. Exception NotDone is raised if an error has occured. | |
void | Location (math_Vector &Loc) const |
outputs the location vector of the minimum in Loc. Exception NotDone is raised if an error has occured. Exception DimensionError is raised if the range of Loc is not equal to the range of the StartingPoint. | |
Standard_Real | Minimum () const |
returns the value of the minimum. Exception NotDone is raised if the minimum was not found. | |
const math_Vector & | Gradient () const |
returns the gradient vector at the minimum. Exception NotDone is raised if an error has occured.the minimum was not found. | |
void | Gradient (math_Vector &Grad) const |
outputs the gradient vector at the minimum in Grad. Exception NotDone is raised if the minimum was not found. Exception DimensionError is raised if the range of Grad is not equal to the range of the StartingPoint. | |
Standard_Integer | NbIterations () const |
returns the number of iterations really done in the calculation of the minimum. The exception NotDone is raised if an error has occured. | |
Standard_EXPORT void | Dump (Standard_OStream &o) const |
Prints on the stream o information on the current state of the object. Is used to redefine the operator <<. . | |
Protected Attributes | |
math_Status | TheStatus |
math_Vector | TheLocation |
math_Vector | TheGradient |
math_Vector | TheStep |
math_Matrix | TheHessian |
Standard_Real | PreviousMinimum |
Standard_Real | TheMinimum |
Standard_Real | MinEigenValue |
Standard_Real | XTol |
Standard_Real | CTol |
Standard_Integer | nbiter |
Standard_Boolean | NoConvexTreatement |
Standard_Boolean | Convex |
Private Attributes | |
Standard_Boolean | Done |
Standard_Integer | Itermax |
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