Package PyDSTool :: Package Toolbox :: Package optimizers :: Package step :: Module quasi_newton_step :: Class DFPNewtonStep
[hide private]
[frames] | no frames]

Class DFPNewtonStep

source code

object --+
         |
        DFPNewtonStep

The Davidson-Fletcher-Powell Quasi-Newton step

Instance Methods [hide private]
 
__init__(self, hessian_approx)
Construct a DFP module
source code
 
__call__(self, function, point, state)
Computes a gradient step based on a function and a point
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, hessian_approx)
(Constructor)

source code 

Construct a DFP module

  • hessian_approx is an approximation of the hessian around the starting point
Overrides: object.__init__