line_search_wolfe2(f, myfprime, xk, pk, gfk=None, old_fval=None, old_old_fval=None, args=(), c1=0.0001, c2=0.9, amax=None, extra_condition=None, maxiter=10)

Notes

Parameters

f : callable f(x,*args)

myfprime : callable f'(x,*args)

xk : ndarray

pk : ndarray

gfk : ndarray, optional

old_fval : float, optional

old_old_fval : float, optional

args : tuple, optional

c1 : float, optional

c2 : float, optional

amax : float, optional

extra_condition : callable, optional

maxiter : int, optional

Returns

alpha : float or None

fc : int

gc : int

new_fval : float or None

old_fval : float

new_slope : float or None

Examples

See :

Local connectivity graph

Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.

Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)

SVG is more flexible but power hungry; and does not scale well to 50 + nodes.

All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them

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GitHub : /scipy/optimize/_linesearch.py#181
type: <class 'function'>
Commit: