Parameter Norm L2

Problem

Compute the global L2 norm of a 2D parameter matrix: the square root of the sum of squared entries.

The signature is param_norm_l2(params).

Hint

Sum the squares of every entry before taking the square root.

case 1

in: [[[3,4]]]

expected: 5

case 2

in: [[[1,0],[0,1]]]

expected: 1.4142135624

case 3

in: [[[0,0],[0,0]]]

expected: 0

case 4

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

expected: 3

Starter codePython

import math
def param_norm_l2(params):
    # Your code here
    pass

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