一文搞懂深度学习中的张量与自动微分！
To discover more fascinating science content, head to bbc.co.uk, search for BBC Inside Science and follow the links to The Open University.
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It's not yet clear why researchers decided to point Webb in its direction, but little is known about the nebula, including the mass of the star creating it. That matters because a more massive star could eventually explode as a supernova, while a smaller, sun-like star would keep shrugging off layers of material until only a dense core remains and cools over time.
Amazon's Spring Sale may not be quite as big as Prime Day in July or October, but it's still one of Amazon's biggest sales of the year. Far more than spring-themed items are on sale, though outdoor equipment, fitness gear, mattresses and lightweight bedding, robot vacuums, and anything else that screams "spring reset" is a huge focus. You'll likely also find deals on tech like TVs, noise-cancelling headphones, and of course, Kindles and other Amazon devices.