ReLU Feature Map

Problem

Apply ReLU to every element of a 2D feature map.

Return a new nested list where each value is max(0.0, v).

Hint

Nonlinearity is applied independently to each activation.

case 1

in: [[[-1,0],[2,-3]]]

expected: [[0,0],[2,0]]

case 2

in: [[[]]]

expected: [[]]

case 3

in: [[[0]]]

expected: [[0]]

case 4

in: [[[1.5,-2.5]]]

expected: [[1.5,0]]

Starter codePython

def relu_map(feature_map):
    # Your code here
    pass

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