Artificial intelligence programs have bested humans in checkers, chess, Go and two-player poker, but multi-player poker was always believed to be a bigger ask. Mission: accomplished.
Researchers at Carnegie Mellon University, working with Facebook’s AI initiative, announced Thursday that their program defeated a group of top pros in six-player no-limit Texas hold ’em.
The program, Pluribus, and its big wins were described in the US journal Science.
“Pluribus achieved superhuman performance at multi-player poker, which is a recognized milestone in artificial intelligence and in game theory,” said Tuomas Sandholm, a computer science professor at Carnegie Mellon.
Sandholm worked with Noam Brown, who is working at Facebook AI while completing his doctorate at the Pittsburgh-based university.
“Thus far, superhuman AI milestones in strategic reasoning have been limited to two-party competition,” Sandholm said in a statement released by the school.
According to the creators of Pluribus, the technology could be used to solve a “wide variety of real-world problems” that, like in poker, involve actors who bluff, or hide key information.
The program first defeated two major poker champions, Darren Elias and Chris Ferguson, who each played 5,000 hands against it.
Pluribus then took on 13 pros in a separate experiment, five at a time. In a total of 10,000 hands, the program “emerged victorious,” researchers said.
First, the program practiced against itself, learning little by little how to use poker moves to best advantage. Surprises cropped up.
“Its major strength is its ability to use mixed strategies,” said Elias.
“That’s the same thing that humans try to do. It’s a matter of execution for humans — to do this in a perfectly random way and to do so consistently. Most people just can’t.”
One surprise was that Pluribus used “donk betting” — ending one round with a call and starting the next with a bet — far more than would the pros, who traditionally see the move as a weak one.
Brown even ventured so far as to say that some of the program’s strategies “might even change the way pros play the game.”
Matt Gaetz forgot which network he was on: Surprised CNN anchor said ‘I’ve never been called Sean Hannity’
Rep. Matt Gaetz seemed to confuse cable news networks during a Thursday appearance
Gaetz was interviewed by CNN's Chris Cuomo, who aggressively challenged Gaetz on the facts as the Florida Republican attempted to defend President Donald Trump.
Despite the fact Cuomo's interview was nothing like the puff segments Gaetz is used to on Fox, the congressman seemed confused by the end.
"Congressman, you are always welcome, wherever I am, at nine or eleven, whenever," Cuomo said.
"Thanks Sean," Gaetz replied.
"Did you just call me Sean?" Cuomo asked. "Did you just call me Sean?"
California lawmaker who chaired Republican Assembly caucus leaving GOP — to become an independent: report
On Thursday, the Sacramento Bee reported that California Assemblyman Chad Mayes, the former Assembly Minority Leader, is leaving the Republican Party and registering as No Party Preference.
"Instead of focusing on solutions for the big problems that we've got, we focused on winning elections," said Mayes in his announcement. "For me, I'm at the point in my life where I'm done with gamesmanship."
Mayes, a controversial figure who was implicated in an affair with a fellow public official, represents Yucca Valley. He is the second Republican Assemblyman this year to leave the party, after Brian Maienschein of San Diego, who Maienschein of San Diego.
‘Quantum physics generator’ incident in Ohio results in evacuation — hazmat found no radiation
Authorities in Columbus, Ohio evacuated dozens of homes after a man called 911 to report being burned by a
"Firefighters say nothing threatening was found in a northwest Columbus garage," WCMH-TV reported. "According to firefighters, a man called and reported that he received ‘RF burns’ while building some sort of ‘quantum physics generator’ in a garage. The man used words like ‘particle accelerator,’ ‘alpha rays,’ and ‘radiation’ while describing how he was burned."