Monotonic Violation Count

Problem

Count monotonicity violations: after sorting by feature value, count adjacent pairs where the prediction decreases.

Hint

Each violation is a local decrease as the feature increases.

case 1

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

expected: 1

case 2

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

expected: 2

case 3

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

expected: 0

Starter codePython

def monotonic_violation_count(feature_values, predictions):
    # Your code here
    pass

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