Few maintenance tasks are as tedious and time-consuming as cleaning your swimming pool. The good news is that robots can now perform that job, leaving you more leisure time to actually swim in your pool. We've spotted some great deals ahead of Amazon's Prime Day sale next week, and we'll add more as they become available. The recently reviewed Airrobo PC10 is a mid-range robotic pool cleaner that did a very good job on our test pool, and Amazon has knocked 42% off its list price, taking it down to 350. While we haven't had an opportunity to review the Wybot C1 robotic pool cleaner, we have obtained good results with some of the company's other products.

AMD's decision to start off with mid-range RDNA 4 GPUs now seems prescient. NVIDIA's high-end RTX 5090 and 5080 are already selling well beyond their absurdly high prices, if you can find any in stock at all. And while the RTX 5070 Ti impressed us, it's already selling for close to the 5080's 1,000 launch price. Now AMD's Radeon 9070 and 9070 XT, which are set to arrive on March 6, have the chance to swoop in and deliver some serious competition. Based on early briefings from AMD, which include some impressive benchmarks (still untested by us), the RDNA 4 GPUs appear to be compelling 4K and 1,440p for discerning gamers who aren't ready to drop four figures on a video card.

We've found plenty of PS5 Black Friday deals, including games, accessories, store funds and the console itself. Grab the disc-based PlayStation 5 system for $450 on Amazon or $50 off the PS5 Slim bundled with Marvel's Spider-Man 2 or Call of Duty: Modern Warfare III. In addition, you can save on DualSense controllers and games from franchises like God of War, Assassin's Creed and Star Wars Jedi. If you're happy to go disc-free, Amazon has the month-old PS5 Slim console bundled with a digital code for Marvel's Spider-Man 2, which Engadget found to be "bigger and better" than the 2018 original, for $499 ($60 off). Sony's "Slim" PS5 console (officially called the PS5 Digital Edition) removes the system's disc drive but lets you change your mind later.

Sentence summarization shortens given texts while maintaining core contents of the texts. Unsupervised approaches have been studied to summarize texts without human-written summaries. However, recent unsupervised models are extractive, which remove words from texts and thus they are less flexible than abstractive summarization. In this work, we devise an abstractive model based on reinforcement learning without ground-truth summaries. We formulate the unsupervised summarization based on the Markov decision process with rewards representing the summary quality. To further enhance the summary quality, we develop a multi-summary learning mechanism that generates multiple summaries with varying lengths for a given text, while making the summaries mutually enhance each other. Experimental results show that the proposed model substantially outperforms both abstractive and extractive models, yet frequently generating new words not contained in input texts.

Specialized webcams that support Windows Hello are still, surprisingly, rare. Microsoft's secure-login system using fingerprint, biometric, and facial recognition technology is, after all, a unique feature of Windows 10 and Windows 11. It makes sense users would want to pair a desktop PC or older laptop with a Windows Hello-compatible camera in order to get its convenient security benefits. You might think that Microsoft's just-announced Modern Webcam would be an option, but, alas, it offers no Windows Hello support! That omission is even weirder given that Microsoft's Windows 10 21H1 release prioritizes external, Windows Hello-enabled webcams over the integrated laptop camera.

Holiday shopping, like many things in 2020, is more complicated than in the previous years. One major consideration people need to account for before buying a physical gift, for example, is if that gift will arrive at its destination on time as much of the delivery and shipping infrastructure across the country is overwhelmed by heightened demand caused by COVID-19. If meeting a certain shipping date is impossible on your end, then you may want to consider gifting something digital this year. In doing so, you'll have the peace of mind that your gift will arrive in time for the holidays -- and you won't have to pay an exorbitant shipping fee on top of the cost of the gift. So, here's a roundup of nine stellar gifts that don't need shipping and make it possible to deliver some holiday cheer digitally this year.

DIY kits make excellent presents around the holidays. Not only do they allow children to learn valuable skills through hands-on projects, but also they provide children with a tangible or intangible reward that makes overcoming the challenges inherent in doing something themselves worthwhile. So, if you still need to pick up a holiday present for a child between the ages of five and 13, we've got you covered. Here's a roundup of four fantastic DIY kits that are currently on sale. Help your child develop STEM skills with this enjoyable way to learn computer programming.

It's been a big year for gaming. To help you shop for the gamer in your life, whether you, a family member or a friend, we've rounded up seven fantastic deals that make excellent gifts for gamers. This HCG1 Pro Gaming Headset is an excellent addition to any gaming setup. It's universally compatible with all of your favorite platforms, working seamlessly with your PC, Xbox One, PS4, Nintendo Switch and any other device that allows a 3.5mm audio jack. Just as valuable, this pro gaming headset provides you with incredible audio and sound.

The DIY spirit is alive and well these days, especially with individuals who have a technical mind. Regardless of age, these people enjoy working on and completing projects -- they just need the resources, tools and a bit of direction to make it happen. If you have a DIYer in your life, you'll want to check out this roundup of six DIY kits that make excellent gifts for the holidays. Circuit Scribe's conductive ink pen, sweet magnetic modules and plain old printer paper allow kids to merge their creativity with science as they build exciting circuits. By placing paper over the steel sheet included in the kit, your child turns the paper into a base for blinking lights, beeping buzzers and whirling motors. Alongside all of the essential materials, this kit comes with an easy-to-follow instructional manual booklet and workbook to guide your children through the process of learning about circuits and switches.

Black Friday equals primetime holiday shopping, and this roundup of 18 incredible deals won't disappoint. For a limited time only, get an extra 20% off physical products, 40% off apps and software and 70% off eLearning deals with the specified coupon code for each item. LaMetric Time is so, so much more than a clock. This WiFi-connected, fully programmable clock is an intelligent display and control for smart homes that is capable of integrating with a wide variety of services and apps. With it, you can wake you up with music, get the forecast, turn off lights and other appliances in your home and much more.