Wolfe Curvature Condition Check

Problem

The Wolfe curvature condition requires |g_new dot d| <= c2 * |g_old dot d| for a descent direction d and 0 < c2 < 1.

Given the new and old gradients, the direction, and c2, return True when the condition holds.

Hint

Compare absolute directional derivatives of the old and new points.

case 1

in: [[0.5,0],[1,0],[-1,0],0.9]

expected: true

case 2

in: [[2,0],[1,0],[-1,0],0.5]

expected: false

case 3

in: [[0,0],[1,2],[1,1],0.1]

expected: true

Starter codePython

def wolfe_curvature_condition_check(g_new, g_old, direction, c2):
    # Your code here
    pass

3 test cases · run your code against them in the editor