from vector import Vec2d func_glob lambda x1_ x2_ x1_ x2_ 001 grad_x l

  • Anonymous
  • Python
  • 19 May 2014 
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from vector import Vec2d



func_glob = lambda x1_, x2_: x1_ * x2_



e = 0.001





grad_x = lambda x1_, x2_: x2_

grad_y = lambda x1_, x2_: x1_





def gradient_search(f, gradient_x, gradient_y):

    xi = Vec2d(1, 1)

    x_i1 = Vec2d(0, 0)

    while True:

        x_i1 = xi - lambda_() * Vec2d(gradient_x(xi.x, xi.y), gradient_y(xi.x, xi.y))



        if x_i1 - xi <= e:

            return x_i1





def lambda_():

    return 1



print(gradient_search(func_glob, grad_x, grad_y))
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