Out of the rich family of generalized linear bandits, perhaps the most well studied ones are logistic bandits that are used in problems with binary rewards: for instance, when the learner aims to maximize the profit over a user that can select one of two possible outcomes (e.g., click' vs no-click'). Despite remarkable recent progress and improved algorithms for logistic bandits, existing works do not address practical situations where the number of outcomes that can be selected by the user is larger than two (e.g., click', show me later', never show again', no click'). In this paper, we study such an extension. We use multinomial logit (MNL) to model the probability of each one of K 1\geq 2 possible outcomes ( 1 stands for the not click' outcome): we assume that for a learner's action \mathbf{x}_t, the user selects one of K 1\geq 2 outcomes, say outcome i, with a MNL probabilistic model with corresponding unknown parameter \bar{\boldsymbol{\theta}}_{\ast i} . Each outcome i is also associated with a revenue parameter \rho_i and the goal is to maximize the expected revenue.

As the contract lifecycle management company Ironclad is today releasing its AI redlining tool AI Assist out of beta, is has revealed that the tool is powered by OpenAI's GPT-4, making it what Ironclad says is the first contract redlining application powered by the latest version of Open AI's generative AI. "The results with AI Assist have been beyond what we could even have imagined," said Ironclad CEO and co-founder, Jason Boehmig. "An initial pass at contract redlining usually takes about 40 minutes. Already, some large enterprises are using Ironclad AI to review over 50% of their incoming contracts, so the compounding business impact there is unprecedented." Although Ironclad says that this is the first redlining tool to use GPT-4, Casetext's CoCounsel, which is built on GPT-4, has capabilities for checking contract policy compliance and suggesting redlines to bring contracts into compliance. It should also be noted that there are other contract redlining tools on the market that use AI, but not GPT-4.

Kitboga is the alias of a Twitch and YouTube streamer who focuses on scam baiting - wasting the time of con artists who are trying to steal money from people. He and a few others have now turned to using artificial intelligence bots to deal with some of the scammers. The system recognises what the scammers are saying to them over the phone and responds with set statements. See more at Click's website and @BBCClick

A Bristol-based robotics company, Open Bionics, has developed the world's first medically-certified 3D-printed artificial arm for amputees. The Hero Arm, with its artificial hand, can fit children as young as nine years old. Its motor is controlled by muscles on the residual limb, allowing the user to carry out many tasks as if the hand was real. Open Bionics hope the £5,000 bionic arm could be made available on the NHS. BBC Click's Kathleen Hawkins went to meet Raimi, who says the arm has given her a new confidence.

Artificial intelligence (AI) which rates a user's physical and personality traits based on a photograph of them has been developed by the University of Melbourne and Science Gallery Melbourne. The Biometric Mirror compares the photograph to a database of what 10,000 people think of different facial appearances. The project is designed to raise awareness of the flaws of artificial intelligence - the algorithm makes decisions based on other people's opinions, not facts - and provoke discussion about how it is used. See more at Click's website and @BBCClick

We're building an artificial intelligence-powered dystopia, one click at a time, says technosociologist Zeynep Tufecki. In an eye-opening talk, she details how the same algorithms companies like Facebook, Google and Amazon use to get you to click on ads are also used to organize your access to political and social information. And the machines aren't even the real threat. What we need to understand is how the powerful might use AI to control us -- and what we can do in response. Check out more TED Talks: http://www.ted.com

Natural Language Processing (NLP) technologies can help to break down the barriers to widespread use of data analytics by making complex analytics possible to just about anyone, regardless of their technical ability. They might not want to take three or four years out to learn advanced computer science and statistics, and with the advances in cognitive computing that won't be necessary. In big data analytics, reporting the insights we've gleaned from analyzing large amounts of messy data sets is the crucial "last step" of the process – and it's often a step which causes us to stumble. But one program, called Quill, takes the trend a step further, producing text-based reports that explain the data clearly and concisely.

Amazon says it has successfully trialled its Prime Air drone delivery service in Cambridge, UK, by delivering a TV streaming stick and bag of popcorn directly to the garden of a nearby customer. The breakthrough suggests that autonomous aerial delivery could become a viable business sooner than thought, albeit only for customers with huge gardens, who live close to the delivery depot, and want items weighing less than 2.6kg. Additionally, while deliveries will be available seven days a week, the drones can only fly in daylight hours and clement weather. Currently, the trial is only open to two customers, but Amazon says it hopes to expand that to dozens in the coming months. For those customers, Prime Air is available for no extra cost.

When a proud parent coos, or pokes out their tongue it warms their heart to see their baby following suit and many believe their little darling is copying them as they peer over the cot. But new research has found that babies up to the age of two months are incapable of copying facial expressions, gestures or speech. Instead, any exaggerated movements the newborns make are simply because they are responding to excitement to the interaction. When a proud parent coos, or pokes out their tongue, it warms their heart to see their baby following suit and many believe their little darling is copying them as they peer over the cot. While it may look like they are imitating the example of their elders, they are making gestures they would have made anyway.

When Microsoft showed HoloLens at TED in Vancouver, its presentation was dramatic and impressive. I wasn't sure why, but the TED crowd of techno early adopters and thought leaders seemed less than impressed. The augmented reality glasses promised to place holograms on top of the real world. But after the demo, the TED Host Helen Walters asked Alex Kipman about the criticism that HoloLen's field of vision was narrow and limited. Kipman didn't answer the question, and you could feel the room shift uncomfortably.