A contextual bandit is a popular framework for online learning to act under uncertainty. In practice, the number of actions is huge and their expected rewards are correlated. In this work, we introduce a general framework for capturing such correlations through a mixed-effect model where actions are related through multiple shared effect parameters. To explore efficiently using this structure, we propose Mixed-Effect Thompson Sampling (meTS) and bound its Bayes regret. The regret bound has two terms, one for learning the action parameters and the other for learning the shared effect parameters. The terms reflect the structure of our model and the quality of priors. Our theoretical findings are validated empirically using both synthetic and real-world problems. We also propose numerous extensions of practical interest. While they do not come with guarantees, they perform well empirically and show the generality of the proposed framework.

WARNING: Graphic footage--Former Detroit Police Chief James Craig joined'Tucker Carlson Tonight' to call on federal authorities to crack down on agitators. A Sacramento, California pub issued a public apology after a far-left activist tied to Antifa slammed it for displaying footage from "Harry Potter" video game "Hogwarts Legacy" during work hours. The Antifa member accused Streets Pub and Grubof promoting hate towards the LGBTQ community by displaying a game affiliated with author J.K. Rowling, the creator of "Harry Potter." She has been called transphobic by LGBTQ activists for her views on biological sex. "Our sincerest apologies to those affected by this incident," the pub stated in a social media post, adding, "We will make sure to be more careful."

The world's first generative AI-powered search engine is here, and it's in love with you. Or it thinks you're kind of like Hitler. Or it's gaslighting you into thinking it's still 2022, a more innocent time when generative AI seemed more like a cool party trick than a powerful technology about to be unleashed on a world that might not be ready for it. If you feel like you've been hearing a lot about generative AI, you're not wrong. After a generative AI tool called ChatGPT went viral a few months ago, it seems everyone in Silicon Valley is trying to find a use for this new technology. Generative AI is essentially a more advanced and useful version of the conventional artificial intelligence that already helps power everything from autocomplete to Siri.

Chatbots are disrupting industries in unexpected ways -- including retail. The latest evidence: A leaked memo from Walmart Global Tech warning against sharing confidential corporate or customer information with bots like ChatGPT. Business Insider reports that in a memo issued Tuesday, the big box store's tech arm said ChatGPT had been blocked following "activity that presented risk to our company." Insider indicated it viewed the memo and stated that Global Tech had evaluated and developed "usage guidelines around generative AI tools and are now opening ChatGPT for usage within the Walmart network." A Walmart spokesperson Insider contacted for comment didn't address blocking AI-powered bots but issued a statement that said in part that "new technologies present new benefits as well as new risks."

A shortage of artists in the animation industry could lead studios to seek out AI companies for a solution. But, according to PC Mag, Netflix is already taking steps toward plugging that labor hole. The animated work in question is a Netflix Japan short called Dog & Boy. Attack on Titan's Wit Studio employed Rinna, an AI character and scenario company, to create the backgrounds for the anime in question. Netflix Japan admitted in a blog post that this project was an experiment.

Perhaps no piece of science fiction relies less on text and linear narrative, and more on visual style and tone, than Peter Chung's Æon Flux--not Karyn Kusama's visually stunning but unfulfillingly straightforward live-action film from 2005, but the 1990s animated series created for MTV's Liquid Television. The series resonates powerfully with our contemporary obsession with, and confusion over, a web of ideas about surveillance, privacy, transparency, spectacle, performative acts, and the ethics and effects of watching and being watched. Decades later, Æon Flux still presents a fresh alternative to black-and-white moralizing about life in a surveillance society. It takes the oppressive power of surveillance seriously, but it's stubbornly playful, unafraid to point out how often we willingly expose ourselves to the all-seeing lens. Chung, a veteran animator known for his work on Rugrats, Teenage Mutant Ninja Turtles, and The Transformers, builds an aesthetic that blends Japanese anime, German Expressionism, and cyberpunk.

When Prometheus stole fire from the gods to gift it to mortals, he enabled humans to begin civilization. But he still had to pay dearly for his crime, being bound to a rock as an eagle pecked out his liver. The lesson of the Greek myth is that while new technology can bring revolutionary benefits, there is always a price to pay in exchange. Creators of new technology may be the focus of the ire, but its users can still get burned. It's a myth that technology leaders should keep in mind as they consider the booming generative AI products market.

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Nextech AR Solution's CAD-3D design studio launches new machine learning technology.

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