Top-1 Error Rate

Problem

Compute the top-1 error rate of a list of predicted class indices.

Return 1 - (correct / total) rounded to 4 decimal places, comparing preds and labels position by position. An empty list returns 0.0.

case 1

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

expected: 0.25

case 2

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

expected: 0

case 3

in: [[1],[0]]

expected: 1

case 4

in: [[],[]]

expected: 0

Starter codePython

def top1_error(preds, labels):
    # Your code here
    pass

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