EMA Teacher Update

Problem

Update a mean-teacher weight with the exponential moving average rule.

Return round(decay * teacher + (1 - decay) * student, 4).

case 1

in: [1,0,0.9]

expected: 0.9

case 2

in: [0.5,0.5,0.99]

expected: 0.5

case 3

in: [0.2,0.8,0]

expected: 0.8

Starter codePython

def ema_update(teacher, student, decay):
    # Your code here
    pass

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