Class Simplex

Instance Methods

__init__(self, func, args, x0, func_tol, maxiter, full_output, print_flag, print_prefix)
Class for downhill simplex minimisation specific functions.

new_param_func(self)
The new parameter function.

contract(self)
Contraction step.

contract_orig(self)
Contraction of the original simplex.

extend(self)
Extension step.

order_simplex(self)
Order the vertices of the simplex according to ascending function values.

reflect(self)
Reflection step.

shrink(self)
Shrinking step.

conv_test(self, *args)
Convergence test.

update(self)
Update function.

Inherited from base_classes.Min: double_test, func_test, grad_test, hessian_type_and_mod, minimise, setup_conv_tests

Method Details

__init__(self, func, args, x0, func_tol, maxiter, full_output, print_flag, print_prefix)
(Constructor)

Class for downhill simplex minimisation specific functions.

Unless you know what you are doing, you should call the function 'simplex' rather than using this class.

Overrides: base_classes.Min.__init__

new_param_func(self)

The new parameter function.

Simplex movement.

conv_test(self, *args)

Convergence test.

Finish minimising when the function difference between the highest and lowest simplex vertices is insignificant or if the simplex doesn't move.

update(self)

Update function.

Overrides: base_classes.Min.update