Gradient Clipping By Value

Problem

Clip every gradient component to the interval [-clip_value, clip_value].

Return a new list where each component g becomes clip_value if g is too large, -clip_value if it is too small, and otherwise stays unchanged. An empty input returns [].

Hint

Clamp each component independently; no scaling is involved.

Test cases

case 1

in: [[1.5,-0.5,0,5],1]

expected: [1,-0.5,0,1]

case 2

in: [[0.4,-0.6],1]

expected: [0.4,-0.6]

case 3

in: [[3,-4],2.5]

expected: [2.5,-2.5]

case 4

in: [[],1]

expected: []

Starter codePython

def clip_by_value(grads, clip_value):
    # Your code here
    pass

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