Cross-Entropy Nats to Bits

Problem

Convert a cross-entropy measured in nats into bits by dividing by ln(2), which is the same as multiplying by log2(e). One nat equals about 1.4427 bits, and a cross-entropy of 0.0 stays 0.0.

Hint

Change of base: log2(x) = ln(x) / ln(2).

Test cases

case 1

in: [1]

expected: 1.4426950408889634

case 2

in: [0.6931471805599453]

expected: 1

case 3

in: [0]

expected: 0

case 4

in: [10]

expected: 14.426950408889635

Starter codePython

import math
def cross_entropy_bits_from_nats(nats):
    # Your code here
    pass

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