template.class_template.SymmetryOrbitEQN.cost

SymmetryOrbitEQN.cost(evaleqn=True)

Cost function evaluated at current state.

Parameters

Returns

float :

The value of the cost function, equal to 1/2 of the squared \(L_2\) norm of the spatiotemporal mapping, \(R = 1/2 F^2\) by default. The current form generalizes to any equation.

Notes

In certain optimization methods, storing evaluations of the governing equation in instances can cut down on the number of function calls.