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<div class="shortcode video v2" data-video-playlist='["id":"4aad60dd-4b3e-41f5-aa7a-d52445915e5c","title":"AI bot defeats poker pros in six-player Texas Holdu2019em","description":"Facebook and Carnegie Mellon University created Pluribus, a poker-playing AI bot.","slug":"ai-bot-defeats-poker-pros-in-six-player-texas-holdem","chapters":"data":,"paging":"total":0,"limit":15,"offset":0,"datePublished":"2019-07-11 18:00:02","duration":290,"mpxRefId":"krIdkbRqTf_yHlYHPZC0sPmf4Je_8nV3","ratingVChip":"TV-14","primaryTopic":"id":"1c0fd1cb-c387-11e2-8208-0291187b029a","author":"id":"","firstName":"","lastName":"","primaryCollection":"id":"040fa0bc-bf08-43dc-ac3d-ee7869a9fc85","title":"CNET News website
Pluribus' dominance over the mere mortals represents a breakthrough that might lead to applications of AI in real-world situations. That's because we often deal with multiple people and unknown information when it comes to things like political campaigns, Daftar Slot Online auctions and cybersecurity threats. AI could help businesses come up with the best strategies to handle those situations, research scientists say.
"We're using poker as a benchmark for a measure in progress in this more complicated challenge of hidden information in a complex multiparticipant environment," said Noam Brown, a research scientist at . The research group, which works on advancing AI technology, is also teaching .
Brown built Pluribus, which means "more" in Latin, with Tuomas Sandholm, a CMU computer science professor whose team has studied computer poker for more than 16 years. The pair's findings were published in the journal on Thursday.
The researchers set up two experiments, one in which a single human played five copies of Pluribus, and another in which five humans played a single copy of the bot. In both cases, Pluribus clearly won.
In the first experiment, Darren Elias and Chris "Jesus" Ferguson, both American poker pros, played 5,000 hands each against five copies of the AI bot. Elias holds the record for most World Poker Tour titles and Ferguson has won six World Series of Poker events. The humans played from their home computers.
Both players were offered $2,000 to participate in the Texas Hold'em game. To encourage them to bring their best game, players could win an extra $2,000 if they performed better against the AI than the other human poker player.
Overall, Pluribus beat the players by an average of 32 milli big blinds (mbb) per game. The big blind is a forced bet in Texas Hold'em, and the milli big blind is a measurement used to compare performance.
In the other experiment 13 players, who've all won more than $1 million each professionally, challenged the AI bot. Pluribus went against five human players at a time over 12 days and played 10,000 hands.
Pluribus won an average of 48 milli big blinds per game. If each chip was worth $1, the bot would've won $1,000 per hour playing against five humans, a Facebook blog post said. The win rate signals that the AI bot is "stronger than the human opponents," the research paper said.
"Sometimes, even if you're a bad player you're going to beat the world's best player just because you have better odds," Sandholm said. "We don't want to measure that luck factor. We want to really measure the skill factor."
Pluribus came up with a strategy for Texas Hold'em from scratch by playing against copies of itself. The bot also used a new algorithm that allowed it to examine its options a few steps ahead rather than at the end of the game.
The bot threw off its human competition by using moves humans typically avoid. For example, the bot placed more "donk bets" than humans. That's a bet at the beginning of a round after the previous one ended in a call.
"Its major strength is its ability to use mixed strategies. That's the same thing that humans try to do," Elias said in a statement. "It's a matter of execution for humans -- to do this in and to do so consistently. Most people just can't."
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