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Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

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Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#21
I'm confused by the subtitle of the linked article, which says "The AI system was able to solve the complex game in just four tries". But the video shows the AI dying many more times than that, and not ultimately winning the game, just learning to explore a portion of it successfully.

What did the Wired editor mean by "solve" and "four tries"? (Or, for that matter, "complete"?)

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#22
I look forward to the day when you are taunted on the Starcraft boards for playing "like an AI" :-)

That said, game theory has always been an excellent way to analyze AI systems. And using "modern" games (which generally provide attractive skins over a classic mechanic) certainly makes it easier to watch/sit through. When DeepMind starts beating people playing Diplomacy then we'll know we're in a whole new game.

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#23
post #21

I'm confused by the subtitle of the linked article, which says "The AI system was able to solve the complex game in just four tries". But the video shows the AI dying many more times than that, and not ultimately winning the game, just learning to explore a portion of it successfully. What did the Wired editor mean by "solve" and "four tries"? (Or, for that matter, "complete"?)

Given that this is what the paper (linked by jerf) says:

within a fraction of the training time, our agent explores a significant portion of the first level and obtains significantly higher scores than previously published agents

... it's probably just the usual hype.

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#24
post #2

If you end up blocked by a popup blocker, or just don't feel like reading fluff, or like me you've got the browser locked down too tightly for their integrated video player to work, the paper is at https://arxiv.org/pdf/1606.01868v1.pdf and the video mentioned is (probably, since I didn't see the original) at https://www.youtube.com/watch?v=0yI2wJ6F8r0 .

Thanks. We've changed the URL from http://www.wired.co.uk/article/google-ai-montezuma-revenge. At first to https://arxiv.org/abs/1606.01868, but since everyone's going to want to watch the video, that seems a bit too abstruse. Hopefully someone will say meaningful things about the paper too.

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#25
post #15

I have a feeling DeepMind AI will specialize in playing video games

Once it gets really good at video games, you can then put it into a robot. How is the real world different than a video game? Navigating a 3d environment, planning, etc, are all important skills needed in "real life" AI. And deepmind has been making great progress on some of them.

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#26

I look forward to the day when you are taunted on the Starcraft boards for playing "like an AI" :-) That said, game theory has always been an excellent way to analyze AI systems. And using "modern" games (which generally provide attractive skins over a classic mechanic) certainly makes it easier to watch/sit through. When DeepMind starts beating people playing Diplomacy then we'll know we're in a whole new game.

Indeed, I can't wait for the day we see DeepMind (or its ilk) playing games like StarCraft, I expect it'll be quite uncanny.

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#27

So lets say I take the trained network, and flip the color of the pixels, and make some other cosmetic changes (keeping the game intact). Will the network then solve it in the first try?

I think in general these types of neural networks are flexible enough to be resistant to trivial changes like this- Whether that specific change for this specific NN would affect results would likely need to be checked empirically.

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#28
post #5

Is it really true that Montezuma's Revenge is more challenging for DeepMind than Go, as they mention in the article?

Montezuma's Revenge, Castle Wolfenstein (not the shooter), and puzzle games in general have a problem of long term credit assignment and sparse reward. This "intrinsic reward" approach form the paper, based on pseudo counts seems to be one way to get an intermediate reward which helps the model learn toward an overall goal (winning/progress) which happens rarely. The previous best work had to pre-define the intrinsic…

Thank you, that was an excellent summary!

On a somewhat related note, it seems clear that AI research and breakthroughs are occurring at breakneck speed. I wish there was a place where you could see expert commentary like your in layman terms on interesting or important papers that stand out.

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#29
This is interesting but it's still far from how a human would learn how to play the game. Humans don't have inbuilt rewards for Montezuma's Revenge, they acquire them culturally. How much of what was learned (by the machine, not the researchers) in playing Montezuma's Revenge could be applied to a game like Zelda? A human would instantly notice many of the connections between the two games: enemies that follow simple patterns and harm the player on contact, rooms that connect to one another laid out on a grid pattern, single use consumable keys that open doors, valuable gems to collect. Is the machine able to make any of these connections on its own?

Re: Deep Mind Playing Montezuma's Revenge with Intrinsic Motivation [video]

#30

Earlier quoted context omitted.

Montezuma's Revenge, Castle Wolfenstein (not the shooter), and puzzle games in general have a problem of long term credit assignment and sparse reward. This "intrinsic reward" approach form the paper, based on pseudo counts seems to be one way to get an intermediate reward which helps the model learn toward an overall goal (winning/progress) which happens rarely. The previous best work had to pre-define the intrinsic…

Thank you, that was an excellent summary! On a somewhat related note, it seems clear that AI research and breakthroughs are occurring at breakneck speed. I wish there was a place where you could see expert commentary like your in layman terms on interesting or important papers that stand out.

The reddit r/machinelearning subreddit has generally higher quality technical discussion than HN, although kastnerkyle's comment is really great.
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