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Machine-Learning AI Now Beats Humans At Super Smash Bros. Melee (qz.com)

"The AI is definitely godlike," one professional player told Quartz. "I am not sure if anyone could beat it." An anonymous reader quotes their report about an AI's showdown with the best players of Super Smash Bros. Melee: Of 10 professionals that faced the bot, each one was killed more than they could kill the bot... But the bot was once only as good as a mere mortal. At first, Vlad Firoiu, creator and a competitive Smash player himself, couldn't train 'Phillip' to be as strong as the in-game bot, which he says even the worst players can beat fairly easily. Firoiu's solution? He started making the bot play itself over and over again, slowly learning which techniques fail and which succeed, called reinforcement learning. Then, he left it alone.

"I just sort of forgot about it for a week," said Firoiu, who coauthored an unreviewed paper with William F. Whitney, the NYU student [who helped him] on the work. "A week later I looked at it and I was just like, 'Oh my gosh.' I tried playing it and I couldn't beat it."

Business Insider points out that their AI read the players positions, velocities, and states directly from the game's memory, so the AI responds six times faster than a human player. To compensate it played as Captain Falcon, the game's slowest character, but there was one crucial glitch. "One particularly clever player found that the simple strategy of crouching at the edge of the stage caused the network to behave very oddly, refusing to attack and eventually KOing itself by falling off the other side of the stage."

2 of 78 comments (clear)

  1. Re:Not really a success for the AI by lgw · · Score: 4, Interesting

    His point was that this AI didn't use the same inputs and controls a human does, so it's not a fair test. Adapt this AI to use only the screen buffer, and give it input lag to match a mechanical controller, and you'll have something.

    --
    Socialism: a lie told by totalitarians and believed by fools.
  2. Re:Not really a success for the AI by lucasnate1 · · Score: 3, Interesting

    I am not sure how relevant that is. Part of what makes us intelligent is our inputs and outputs. It is possible that dolphins or some other animals are much smarter than us but because they don't have opposable thumbs we developed and they didn't. Don't you think it would make us more capable if we could direct digital input? imho, the only test for the quality of an AI is "what it can do", not how.

    Then again, I do agree that this project and projects similar to it are not exactly creating "intelligence", they are creating an expert system, good for one thing and one thing only.