Show HN: Watch a neural net learn to play Snake

Post by jesuo » Sat, May 16, 2026, 7:43 AM UTC

starshadowx2 wrote: post #35

FYI this website sets off a bunch of Bitdefender alerts as being a suspicious web page. I assume probably false positives or something but still something you might want to look into. "The page https://ppo.gradexp.xyz/ has been detected with suspicious activity. It is not recommended to continue browsing this website." Same for: https://ppo.gradexp.xyz/version.js https://ppo.gradexp.xyz/dist/sizes.js https://ppo.grad…

Post by Ozzie-D » Sat, May 16, 2026, 9:56 AM UTC

Post by foo12bar » Sat, May 16, 2026, 11:58 AM UTC

ziofill wrote: post #39

foo12bar wrote: post #25

Earlier quoted context omitted.

But if not the snake could go into an infinite loop, never growing, never eating.

Why? It should get the reward for getting longer, but not for getting longer quicker

Post by coder0x » Sat, May 16, 2026, 1:30 PM UTC

Post by foo12bar » Sat, May 16, 2026, 7:12 PM UTC

ziofill wrote: post #48

foo12bar wrote: post #45

Earlier quoted context omitted.

Because the sessions would last forever. Think of a 1 or 2 length snake, figuring out that left down up right over and over again doesn't lose any points. You're now trapped in a local minimum. You need to make the AI get impatient (lose points) or it'll never learn.

I see what you are saying but then wouldn’t it miss out on the best strategies, which do require patience and not going straight for the apple?