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Computer scientists at the University of Pennsylvania have proved that pricing algorithms can drive up prices even when they lack the capacity to collude. Aaron Roth and four colleagues studied so-called no-swap-regret algorithms, which are designed to minimize losses and were previously thought to guarantee competitive pricing. The researchers found that when such an algorithm faces an opponent using a nonresponsive strategy -- one that randomly selects from predetermined price probabilities without reacting to competitor moves -- both players can end up in equilibrium at high prices. Neither has an incentive to switch strategies because their profits are nearly equal and as high as possible under the circumstances. The nonresponsive strategy cannot express threats because it does not respond to opponent behavior, yet it effectively coaxes the learning algorithm into raising prices. Mallesh Pai, an economist at Rice University not involved in the research, said the finding matters because regulators have no clear grounds to intervene without evidence of threats or agreements. Roth conceded however that he lacks a solution to the regulatory challenge his team identified.

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Samantha Wall made the lives of Brad Burton and Naomi Timperley hell by posting false claims about them on social media in 'deliberate and calculated campaign of online stalking'.

The road was closed for hours

The much loved actor was still living in her beloved £3million family home near Wandsworth Common, south London, when she died, aged 93.

The crew of the Coral Adventurer ship reported the 80-year-old missing at 10pm local time, five hours after the vessel left her behind on the Great Barrier Reef's remote Lizard Island.

TypeScript was ranked top programming language

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EXCLUSIVE: The 49-year-old has been dating his new woman, Victoria Phillips, from Stockport, for more than a year and proposed earlier this month.

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Now, ahead of his January trial, Høiby is receiving treatment for substance abuse issues, his defence lawyers, Ellen Holager Andenæs and Petar Sekulic, confirmed to TV 2 Norway.

Witham Dramatic Club is performing Australian play Things I Know To Be True by Andrew Bovell.

Just seven per cent of the public now believes that Labour's green push will bring down costs, the survey shows, despite the Energy Secretary's election pledge to slash bills by £300.

Anna Werner Friedmann is accused of sinking her teeth into fellow actor Benjamin S.'s buttocks during a performance of Alma - A Show Biz to the End.

Steve Reed, the Communities Secretary, expressed his 'deep disappointment' in a letter to the leader of South Cambridgeshire district council, Bridget Smith.

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Nvidia became the world's first $5 trillion company on Wednesday after its stock climbed 5% in early Wall Street trading to push its market capitalization to $5.13 trillion. The Silicon Valley chipmaker reached the milestone three months after hitting $4 trillion and three years after it was valued at roughly $400 billion before the debut of ChatGPT. Nvidia chief executive Jensen Huang said Tuesday that Nvidia had secured half a trillion dollars in orders for its AI chips over the next five quarters. The stock had already gained 5% on Tuesday and added more than $200 billion to its market value. President Donald Trump said Wednesday he planned to discuss Nvidia's Blackwell chip with China's President Xi Jinping when the two leaders meet later this week. Nvidia's latest generation of graphics processing units is not currently available in China because of US export controls. The company's shares have risen more than 85% in the past six months.

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GPU giant teams with partners to create digital twin blueprint for next-gen datacenters

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The site has been vacant for more than a year

Bosses banking on automation? 55% will regret those job cuts

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Earth is 'hurtling towards climate chaos' as most of the planet's vital signs are now 'flashing red', reveals a new report from an international coalition led by Oregon State University scientists.