Hard Threshold Vector

Problem

Apply the elementwise hard-thresholding operator.

Keep each component unchanged when abs(x) > t, otherwise return 0.0. Components exactly at the threshold are zeroed. An empty list returns [].

Hint

Unlike soft thresholding, surviving values are not shrunk.

case 1

in: [[1.5,-0.5,3,0.1],1]

expected: [1.5,0,3,0]

case 2

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

expected: [2,-2]

case 3

in: [[],0.5]

expected: []

case 4

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

expected: [0,0]

Starter codePython

def hard_threshold_vector(v, t):
    # Your code here
    pass

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