Package PyDSTool :: Package Toolbox :: Package optimizers :: Package optimizer :: Module optimizer :: Class Optimizer

Class Optimizer

object --+
         |
        Optimizer

Known Subclasses:

The simple optimizer class This class lacks some intel that must be populated/implemented in the subclasses :

currentValues is a list of the 2 last cost values computed with the function
currentParameters is a list of the 2 last parameters used for the computation of currentValues
the iterate function that does the real iteration loop

Instance Methods

[hide private]

__init__(self, **kwargs)
Initialization of the optimizer, saves the function and the criterion to use Needs to have :

source code

optimize(self)
Does the optimization, call iterate and returns the optimal set of parameters

source code

recordHistory(self, **kwargs)
Function that does nothing, called for saving parameters in the iteration loop, if needed

source code

iterate(self)
Does one iteration of the optimization Present here for readability

source code

check_arguments(self)
Checks if the given arguments are correct

source code

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __str__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, **kwargs)
(Constructor)

source code

Initialization of the optimizer, saves the function and the criterion to use Needs to have :

a function to optimize (function)
a criterion to stop the optimization (criterion)

Can have :

a step modifier, a factor to modulate the step (stepSize = 1.)
a recorder that will be called with the factors used in one iteration step (record = self.recordHistory)

Overrides: object.__init__

Class Optimizer

__init__(self, **kwargs) (Constructor)

init(self, **kwargs)
(Constructor)