Traditional recommender systems encounter several challenges such as data sparsity and unexplained recommendation. To address these challenges, many works propose to exploit semantic information from review data. However, these methods have two major limitations in terms of the way to model textual features and capture textual interaction. For textual modeling, they simply concatenate all the reviews of a user/item into a single review. However, feature extraction at word/phrase level can violate the meaning of the original reviews. As for textual interaction, they defer the interactions to the prediction layer, making them fail to capture complex correlations between users and items. To address those limitations, we propose a novel Hierarchical Text Interaction model(HTI) for rating prediction. In HTI, we propose to model low-level word semantics and high-level review representations hierarchically. The hierarchy allows us to exploit textual features at different granularities. To further capture complex user-item interactions, we propose to exploit semantic correlations between each user-item pair at different hierarchies. At word level, we propose an attention mechanism specialized to each user-item pair, and capture the important words for representing each review. At review level, we mutually propagate textual features between the user and item, and capture the informative reviews. The aggregated review representations are integrated into a collaborative filtering framework for rating prediction. Experiments on five real-world datasets demonstrate that HTI outperforms state-of-the-art models by a large margin. Further case studies provide a deep insight into HTI's ability to capture semantic correlations at different levels of granularities for rating prediction.

The introduction of artificial intelligence into activities traditionally carried out by human beings produces brutal changes. This is not without consequences for human values. This paper is about designing and implementing models of ethical behaviors in AI-based systems, and more specifically it presents a methodology for designing systems that take ethical aspects into account at an early stage while finding an innovative solution to prevent human values from being affected. Two case studies where AI-based innovations complement economic and social proposals with this methodology are presented: one in the field of culture and operated by a private company, the other in the field of scientific research and supported by a state organization.

Though it was held this year in October instead of September, Apple's "Hi, Speed" media event was a largely typical iPhone launch party, opening with the expansion of its Siri-powered line of HomePod speakers ("Hi"), and concluding with the long-awaited addition of 5G cellular connectivity to the iPhone lineup ("Speed"). Some companies might have tread cautiously on these topics -- Siri and 5G have both been dogged by complaints -- but Apple didn't hold anything back, using a seemingly endless parade of spokespeople to hype the new devices ahead of preorders. The 5G iPhone 12 family, it promised, will "blast past fast," while the $99 HomePod mini will become a hub to "control your smart home," bringing "intelligent assistant" access to the lowest price yet for any Siri device. Having covered Apple for a long time, I'm not surprised that its latest pitches were all sunshine and roses, but I couldn't help but feel that it was making big promises that could come back to bite the company and its partners. As of October 2020, the only thing less likely to thrill someone than a Siri speaker is typical U.S. 5G network performance, which despite boasts of 1-4Gbps downloads has seen average speeds that are barely better than 4G/LTE. Siri and 5G are both theoretically moving targets -- they're services that could improve at any time and in any region without advance notice -- but prior to this event, neither has delivered on its transformative potential.

Purchases you make through our links may earn us a commission. The second morning of Amazon Prime Day has dawned and the deals are just as good! Prime members can head on over to Amazon (or sign up for a free 30-day trial), to take advantage of the best Prime Day deals available. The Eufy BoostIQ Robovac 30C incorporates everything we loved about previous Robovac models and adds even more, making it our pick for the best value smart robot vacuum. Smart robot vacuums live or die on their app and features, and Eufy's smart suite is one of the best out there.

The Echo Show 5 is one of the best smart speakers you can buy--and now it's on sale. Purchases you make through our links may earn us a commission. Life gets so hectic sometimes it helps to have an assistant. With the Echo Show 5, that's essentially what you'll be getting: A remarkably resourceful buddy who's always down to help you with your errands and to-do list--all you have to do is ask. As one of Amazon's best Prime Day 2020 deals, Prime members can get this truly marvelous smart display at a major discount--and that's just where the fun begins.

We're in 2020 and long past the days back when we used to stand outside the school library to get the opportunity to copy two or three Encyclopedia pages, to use as a kind of reference for our school projects. With this age having grown up with the benefit of access to technology at their fingertips, the field of education has hugely changed and overturned in this digitally driven world. Artificial Intelligence in the education market was worth US$2.022 billion for the year 2019. The worldwide AI in the education market is anticipated to be valued at USD 3.68 billion by 2023, at a CAGR of 47% during the forecast period of 2018 till 2023. Artificial intelligence has already infiltrated our lives on an individual level.

If you aren't shopping Amazon Prime Day with a specific product in mind--maybe you're looking for holiday gifts for the whole family--it can quickly get overwhelming and pricey. Thankfully, there are quite a few options under $50 to choose from. We've narrowed down some of the best we've seen from Amazon and other stores, and we'll update this as the final day of Prime Day (yes, it stretches from Tuesday through Wednesday, October 14) stretches on. Note: We strike through items that sell out or rise in price as we update this guide. You'll need a subscription to Amazon Prime to get most of these deals. Updated October 14: We added the Roku Streaming Stick, Logitech Mouse, changed some links, and struck out some sold out deals.

We live in an exciting time, especially in innovation, progress, technology, and commerce. Some of the latest tech inventions, such as artificial intelligence and machine learning, are making a tremendous impact on every industry. Voice assistants powered by AI have already transformed the eCommerce trend. The eCommerce giants such as Amazon continue to fuel this trend as they compete for the market share. Voice interfacing is advancing at an exceptional rate in healthcare and banking industries to keep pace with consumers' demands.

If you aren't shopping Amazon Prime Day with a specific product in mind--maybe you're looking for holiday gifts for the whole family--it can quickly get overwhelming and pricey. Thankfully, there are quite a few options under $50 to choose from. We've narrowed down some of the best we've seen from Amazon and other stores, and we'll be updating this as the sale goes on. Note: We strike through items that sell out or rise in price as we update this guide. You'll need a subscription to Amazon Prime to get most of these deals.

The follow-up to Apple's $300 HomePod has finally arrived, with the smaller, spherical HomePod mini, complete with onboard Siri and a new "intercom" feature. The new smart speaker is slated to arrive next month. Unveiled alongside the iPhone 12 during Apple's "Hi, Speed" event on Tuesday, the $99 HomePod mini (pre-orders begin November 6 for shipping on November 16) takes a page from Amazon's revamped Echo speakers (or is it the other way around?) with a ball-shaped, fabric-covered industrial design. Set to arrive in white and space gray flavors, the HomePod mini has a backlit touchpad on top with integrated volume and playback controls. The new HomePod mini comes equipped with a full-range driver and dual passive radiators, while the speaker itself is powered by Apple's S5 chip. Inside the 3.3-inch shell is a full-range, neodymium magnet-powered dynamic driver, a pair of force-cancelling passive radiators, and an acoustic wave guide at the bottom that's designed to deliver 360-degree sound.