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.

Artificial Intelligence is an area of computer science that focuses the creation of intelligent machines that work and react like humans. Artificial Intelligence ETFs potentially stand to benefit from increased adoption and utilization of artificial intelligence, including those involved with industrial and non-industrial robotics, automation, 3D printing, natural language processing, social media, and autonomous vehicles. Click on the tabs below to see more information on Artificial Intelligence ETFs, including historical performance, dividends, holdings, expense ratios, technical indicators, analysts reports and more. Click on an ETF ticker or name to go to its detail page, for in-depth news, financial data and graphs. By default the list is ordered by descending total market capitalization.

Security software designed to prevent bank fraud has been fooled by a BBC reporter and his twin. BBC Click reporter Dan Simmons set up an HSBC account and signed up to the bank's voice ID authentication service. HSBC says the system is secure because each person's voice is "unique". But the bank let Dan Simmons' non-identical twin, Joe, access the account via the telephone after he mimicked his brother's voice. HSBC introduced the voice-based security in 2016, saying it measured 100 different characteristics of the human voice to verify a user's identity.

Before building the chatbot, let us first understand the technology that is powering this chatbot. IBM Bluemix is a Platform As A Service cloud offering from IBM. It enables developers to quickly create, deploy, and manage applications on the cloud by abstracting other layers. Watson is a cognitive system that can understand all forms of data, interact naturally with people, and learn and derive insights out of it, at scale. Watson is available as a set of open APIs and SaaS products.