Stay strong, fair-weather friends--you can keep biking to work even through the darkest, coldest days. Biking to work is a thing. A regular bike commute gives you the chance to squeeze in extra cardio, and that extra exercise can do remarkable things for your health. Startling research has discovered that cyclists have about a 41 percent lower risk of dying overall (assuming you stay safe, obviously!), a 46 percent lower risk of cardiovascular disease, a 45 percent lower risk of cancer incidence, compared with non-active commuters. Swapping car trips for bike rides cuts fuel and parking costs; results in fewer sick days and higher productivity; and is great for your carbon footprint, besides easing congestion and improving air quality. Then the idea of commuting by bike becomes a whole lot less appealing, even if it good for you. That's why we wrote this guide to the best bike gear for winter commuting. Instead, we just want you to stay warm, safe, and dry. Be sure to also check out our other outdoor buying guides, including, Best Bike Lights, Best Electric Bikes, Best Laptop Backpacks for Work, Best Rain Jackets and Best Base Layers .

We hand the community HAND, a simple and time-efficient method for teaching robots new manipulation tasks through human hand demonstrations. Instead of relying on task-specific robot demonstrations collected via teleoperation, HAND uses easy-to-provide hand demonstrations to retrieve relevant behaviors from task-agnostic robot play data. Using a visual tracking pipeline, HAND extracts the motion of the human hand from the hand demonstration and retrieves robot sub-trajectories in two stages: first filtering by visual similarity, then retrieving trajectories with similar behaviors to the hand. Fine-tuning a policy on the retrieved data enables real-time learning of tasks in under four minutes, without requiring calibrated cameras or detailed hand pose estimation. Experiments also show that HAND outperforms retrieval baselines by over 2x in average task success rates on real robots. Videos can be found at our project website: https://liralab.usc.edu/handretrieval/.

Nike's Robotic Shoe Gets Humans One Step Closer to Cyborg Project Amplify is Nike's latest attempt to put some spring in your step with help from a powered mechanism that enhances the natural movement of the human ankle and lower leg. If you want to run faster or farther, you have options. You can put in the work, getting up 40 minutes earlier to train, changing your diet, going harder and longer on each of your runs to build up strength. Or, you can strap on one of Nike's new robot shoes and mechanically boost your speed, your stamina, and your overall performance in a flash. Sounds way easier, and probably more fun too.

It looks like fabric, feels like metal, and is as light as rubber. Any watch fan looking to tick all of the above boxes would normally expect to be a dab hand with a spring bar removal tool to experience all the above individually, but a new strap developed by Malaysian independent brand Ming appears to now offer the best of all worlds. The one strap to rule them all has been dubbed the Polymesh, and is 3D-printed from grade five titanium, and comprises 1,693 interconnected pieces (including the buckle) held together without any pins or screws. The only additional parts requiring assembly are the quick-release spring bars at each end that attach it to the watch--the articulated pin buckle is also formed in the same process. Ming says that the strap, which is made up from rows of 15 equilateral triangles, meshed together and bookended by larger end pieces, "has more motion engineered into the radial axis than the lateral one," leading to a supple end result that drapes like fabric yet retains the strength of titanium.

Accurate vehicle trajectory prediction is essential for ensuring safety and efficiency in fully autonomous driving systems. While existing methods primarily focus on modeling observed motion patterns and interactions with other vehicles, they often neglect the potential risks posed by the uncertain or aggressive behaviors of surrounding vehicles. In this paper, we propose a novel spatial-temporal risk-attentive trajectory prediction framework that incorporates a risk potential field to assess perceived risks arising from behaviors of nearby vehicles. The framework leverages a spatial-temporal encoder and a risk-attentive feature fusion decoder to embed the risk potential field into the extracted spatial-temporal feature representations for trajectory prediction. A risk-scaled loss function is further designed to improve the prediction accuracy of high-risk scenarios, such as short relative spacing. Experiments on the widely used NGSIM and HighD datasets demonstrate that our method reduces average prediction errors by 4.8% and 31.2% respectively compared to state-of-the-art approaches, especially in high-risk scenarios. The proposed framework provides interpretable, risk-aware predictions, contributing to more robust decision-making for autonomous driving systems.

--Consumers often heavily rely on online product reviews, analyzing both quantitative ratings and textual descriptions to assess product quality. However, existing research hasn't adequately addressed how to systematically encourage the creation of comprehensive reviews that capture both customers sentiment and detailed product feature analysis. This paper presents CPR, a novel methodology that leverages the power of Large Language Models (LLMs) and T opic Modeling to guide users in crafting insightful and well-rounded reviews. Our approach employs a three-stage process: first, we present users with product-specific terms for rating; second, we generate targeted phrase suggestions based on these ratings; and third, we integrate user-written text through topic modeling, ensuring all key aspects are addressed. We evaluate CPR using text-to-text LLMs, comparing its performance against real-world customer reviews from Walmart. Our results demonstrate that CPR effectively identifies relevant product terms, even for new products lacking prior reviews, and provides sentiment-aligned phrase suggestions, saving users time and enhancing reviews quality. Quantitative analysis reveals a 12.3% improvement in BLEU score over baseline methods, further supported by manual evaluation of generated phrases. We conclude by discussing potential extensions and future research directions. I NTRODUCTION Product reviews play a crucial role for retailers, as they help build trust among potential customers by providing social proof. They influence purchase decisions [7], [9], [19], [25] by offering information on the quality and suitability of the product. Reviews also provide valuable feedback for retailers, allows them to improve their products and enhance customer satisfaction. Furthermore, product reviews contribute to product search optimization efforts [8], giving retailers a competitive advantage and fostering customer engagement and loyalty. Product review phrase suggestion is a sub-task of text-to-text generation in natural language processing (NLP). Online shopping is increasingly popular. However, customers often lack the motivation to write constructive reviews.

Bed-to-wheelchair transferring is a ubiquitous activity of daily living (ADL), but especially challenging for caregiving robots with limited payloads. We develop a novel algorithm that leverages the presence of other assistive devices: a Hoyer sling and a wheelchair for coarse manipulation of heavy loads, alongside a robot arm for fine-grained manipulation of deformable objects (Hoyer sling straps). We instrument the Hoyer sling and wheelchair with actuators and sensors so that they can become intelligent agents in the algorithm. We then focus on one subtask of the transferring ADL -- tying Hoyer sling straps to the sling bar -- that exemplifies the challenges of transfer: multi-agent planning, deformable object manipulation, and generalization to varying hook shapes, sling materials, and care recipient bodies. To address these challenges, we propose CART-MPC, a novel algorithm based on turn-taking multi-agent model predictive control that uses a learned neural dynamics model for a keypoint-based representation of the deformable Hoyer sling strap, and a novel cost function that leverages linking numbers from knot theory and neural amortization to accelerate inference. We validate it in both RCareWorld simulation and real-world environments. In simulation, CART-MPC successfully generalizes across diverse hook designs, sling materials, and care recipient body shapes. In the real world, we show zero-shot sim-to-real generalization capabilities to tie deformable Hoyer sling straps on a sling bar towards transferring a manikin from a hospital bed to a wheelchair. See our website for supplementary materials: https://emprise.cs.cornell.edu/cart-mpc/.

I tried to go into meeting Mirumi with a heart of steel. There are a lot of cute robots at CES every year, that is a given, and you can't just let yourself get wooed by every puppy-eyed bot that looks your way. But boy did I melt immediately when that silly little thing locked its gaze on me, then bashfully tucked its head away. Mirumi is the latest bizarre-but-endearing robot from Japanese startup Yukai Engineering, the company responsible for the Qoobo cat-tailed pillow and the finger-nibbling kitty plush, Amagami Ham Ham. All it does is stare at you and move its head around a little until you've successfully been tricked into a few moments of happiness.

Robot learning is witnessing a significant increase in the size, diversity, and complexity of pre-collected datasets, mirroring trends in domains such as natural language processing and computer vision. Many robot learning methods treat such datasets as multi-task expert data and learn a multi-task, generalist policy by training broadly across them. Notably, while these generalist policies can improve the average performance across many tasks, the performance of generalist policies on any one task is often suboptimal due to negative transfer between partitions of the data, compared to task-specific specialist policies. In this work, we argue for the paradigm of training policies during deployment given the scenarios they encounter: rather than deploying pre-trained policies to unseen problems in a zero-shot manner, we non-parametrically retrieve and train models directly on relevant data at test time. Furthermore, we show that many robotics tasks share considerable amounts of low-level behaviors and that retrieval at the "sub"-trajectory granularity enables significantly improved data utilization, generalization, and robustness in adapting policies to novel problems. In contrast, existing full-trajectory retrieval methods tend to underutilize the data and miss out on shared cross-task content. This work proposes STRAP, a technique for leveraging pre-trained vision foundation models and dynamic time warping to retrieve sub-sequences of trajectories from large training corpora in a robust fashion. STRAP outperforms both prior retrieval algorithms and multi-task learning methods in simulated and real experiments, showing the ability to scale to much larger offline datasets in the real world as well as the ability to learn robust control policies with just a handful of real-world demonstrations. Especially, end-to-end imitation learning with, e.g., diffusion models (Chi et al., 2023; Wang et al., 2024) and transformers (Haldar et al., 2024), have shown impressive success.

We've tested hundreds of speakers over the years, and we put the best ones into our buying guides -- namely the ones for soundbars, portable Bluetooth speakers and smart speakers. Now that Cyber Monday has arrived, we're seeing notable discounts on many of our top picks. So if you need a soundbar to make the dialogue on your TV clearer or want to take your music out on the porch once the weather warms back up, this is a good time to grab a new music maker. And if you need a speaker to do your bidding (like turning on your smart lights or reminding you to take out the trash) you can save on a smart speaker, too. Here are the best Cyber Monday speaker deals we could find. Portable Bluetooth speakers make it easy for you to bring the music where plugs don't reach -- a picnic, the front stoop, an aimless wander along the Pacific Crest Trail.