Amazon Prime Day is live. See the best deals HERE. Amazon has almost every device in its stable substantially on sale during the Prime Big Deal Days shopping holiday. We may earn revenue from the products available on this page and participate in affiliate programs. Right now, Amazon is in the midst of its Prime Big Deal Days sale and it's really feeling itself.

Thinking about science and technology in terms of return on investment misses the point. Here's what kids really need to know. That's what led me to become a professor. As a high school student, one of my major life goals was to figure out how to build an actual light sword. Doing so is all but impossible, so it didn't really matter if I went into engineering or science, but I pursued STEM just the same.

Dual encoder (DE) models, where a pair of matching query and document are embedded into similar vector representations, are widely used in information retrieval due to their simplicity and scalability. However, the Euclidean geometry of the embedding space limits the expressive power of DEs, which may compromise their quality. This paper investigates such limitations in the context of hierarchical retrieval (HR), where the document set has a hierarchical structure and the matching documents for a query are all of its ancestors. We first prove that DEs are feasible for HR as long as the embedding dimension is linear in the depth of the hierarchy and logarithmic in the number of documents. Then we study the problem of learning such embeddings in a standard retrieval setup where DEs are trained on samples of matching query and document pairs. Our experiments reveal a lost-in-the-long-distance phenomenon, where retrieval accuracy degrades for documents further away in the hierarchy. To address this, we introduce a pretrain-finetune recipe that significantly improves long-distance retrieval without sacrificing performance on closer documents. We experiment on a realistic hierarchy from WordNet for retrieving documents at various levels of abstraction, and show that pretrain-finetune boosts the recall on long-distance pairs from 19% to 76%. Finally, we demonstrate that our method improves retrieval of relevant products on a shopping queries dataset.

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Could robots be part of the answer to alleviating teacher shortages (and other staffing issues) in the future? Lots of folks think so, and new research indicates kids might already be primed to accept a non-human information source. A group of researchers from Concordia University in Montréal, Canada, ran two experiments with groups of three- and five-year-old children, all recruited from a database of existing research participants. Families received gift cards and the children received certificates of merit for participating. Approximately half the sample was white, a quarter of the sample was mixed race, and the remainder consisted of various other ethnic groups (such as African, Asian, and South American).

Teaching kids how machines learning works is all about showing examples and enabling them to experiment by themselves.

Cyber Monday has come and gone, but if you're still looking to pick up a new smart display or two ahead of the holidays, a newer deal on Amazon's Echo Shows may be of interest: The retailer is currently offering a bundle that pairs its Echo Show 8 with the Kids edition of its Echo Show 5 for $70. We've seen the Echo Show 8 alone go for $70 for much of the last two months, but that still equals the lowest price we've tracked. Normally, it retails closer to $100. With this deal, you're effectively getting an Echo Show 5 Kids thrown in at no extra cost. That device is currently available on its own for $40, but its average street price over the last few months has sat closer to $60.

Amazon is having an internal crisis over Alexa right now--its voice assistant is on pace to lose $10 billion this year--so it might not be the best idea to invest in the company's lineup of Alexa-powered devices right now. However, Amazon makes a ton of other hardware, from Kindles, which are some of the best ebook readers in the market, to Fire tablets and Fire TV sticks. Everything is heavily discounted right now for Cyber Monday, so now's one of the best times to buy. We test products year-round and handpicked these deals. Products that are sold out or no longer discounted as of publishing will be crossed out . We'll update this guide through Cyber Monday.

Amid soaring demand for tools to enable the data-driven organisation, a partnership between data specialists Knowledge Integration Dynamics (KID) and global AI cloud leader DataRobot is automating and democratising artificial intelligence (AI) and machine learning (ML), putting it into the hands of more South African businesses. Markus Top, who is heading up the partnership at KID, says it is a logical next step for KID, which has supported South African enterprises through their data journey for over 20 years. "Every business today wants to be data driven and embed AI at scale. However, until fairly recently achieving this has been a costly and time-consuming task," Top says. "With DataRobot, the manual, time-consuming processes within AI and ML projects are largely automated, allowing businesses to transform and innovate faster."

The word "Smart" will probably go on to become the most popular prefix in the English language in coming years. We have had Smart Watches, Smart Phones, Smart TVs etc. for quite some time now and everytime something "Smart" comes up in the market, everyone wants to buy it. Do you remember Woody from The Toy Story? Here's a picture just to make sure. What if someone told you that in near future you could have an interactive toy which can adapt, learn and respond actively making your child's playtime amazing?