Linear Epsilon Schedule

Problem

Compute the epsilon used at step t under a linear decay schedule.

Epsilon decreases linearly from start to end over decay_steps steps and then stays at end. If decay_steps is not positive or t is at least decay_steps, return end.

Hint

The fraction t / decay_steps is the interpolation weight between start and end.

Test cases

case 1

in: [0,1,0.1,100]

expected: 1

case 2

in: [50,1,0.1,100]

expected: 0.55

case 3

in: [100,1,0.1,100]

expected: 0.1

case 4

in: [200,1,0.1,100]

expected: 0.1

case 5

in: [30,0.9,0,60]

expected: 0.45

Starter codePython

def linear_epsilon(t, start, end, decay_steps):
    # Your code here
    pass

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