Yes that's true, it is more usually bits. Here it's natural log / nats. Since it's unnormalized anyway another constant factor doesn't hurt and it means not having to change the base.
On Fri, Apr 12, 2013 at 8:01 AM, Phoenix Bai <baizh...@gmail.com> wrote: > I got 168, because I use log base 2 instead of e. > ([?]) if memory serves right, I read it in entropy definition that people > normally use base 2, so I just assumed it was 2 in code. (my bad). > > And now I have a better understanding, so thank you both for the > explanation. > >