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- WhatsApp adds voice and video calling to desktop app - TechCrunch
- SpaceX Starship rocket prototype nails landing ... then blows up - NBC News
- Facebook trains A.I. to ‘see’ using 1 billion public Instagram photos - CNBC
| WhatsApp adds voice and video calling to desktop app - TechCrunch Posted: 04 Mar 2021 01:22 AM PST [unable to retrieve full-text content]
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| SpaceX Starship rocket prototype nails landing ... then blows up - NBC News Posted: 04 Mar 2021 07:38 AM PST  The third time appeared to be the charm for Elon Musk's Starship rocket - until it wasn't. The latest heavy-duty launch vehicle prototype from SpaceX soared flawlessly into the sky in a high-altitude test blast-off on Wednesday from Boca Chica, Texas, then flew itself back to Earth to achieve the first upright landing for a Starship model. But the triumph was short-lived. Listing slightly to one side as an automated fire-suppression system trained a stream of water on flames still burning at the base of the rocket, the spacecraft blew itself to pieces about eight minutes after touchdown. It was the third such landing attempt to end in a fireball after an otherwise successful test flight for the Starship, being developed by SpaceX to carry humans and 100 tons of cargo on future missions to the moon and Mars. For Musk, the billionaire SpaceX founder who also heads the electric carmaker Tesla, the outcome was mixed news. The Starship SN10 came far closer to achieving a safe, vertical touchdown than two previous models - SN8 in December and SN9 in February. In a tweet responding to tempered congratulations from an admirer of his work, Musk replied, "RIP SN10, honorable discharge." The video feed provided by SpaceX on the company's YouTube channel cut off moments after the landing. But separate fan feeds streamed over the same social media platform showed an explosion suddenly erupting at the base of the rocket, hurling the SN10 into the air before it crashed to the ground and became engulfed in flames. The complete Starship rocket, which will stand 394-feet (120 metres) tall when mated with its super-heavy first-stage booster, is SpaceX's next-generation fully reusable launch vehicle - the center of Musk's ambitions to make human space travel more affordable and routine. A first orbital Starship flight is planned for year's end. Musk has said he intends to fly Japanese billionaire Yusaku Maezawa around the moon with the Starship in 2023. |
| Facebook trains A.I. to ‘see’ using 1 billion public Instagram photos - CNBC Posted: 04 Mar 2021 07:00 AM PST  A person using Instagram. Lorenzo Di Cola | NurPhoto via Getty Images Pugs, Ferraris, mountains, brunches, beaches, and babies — Instagram is full of them. In fact, it's become one of the largest image databases on the planet over the last decade and the company's owner, Facebook, is using this treasure trove to teach machines what's in a photo. Facebook announced on Thursday that it had built an artificial intelligence program that can "see" what it is looking at. It did this by feeding it over 1 billion public images from Instagram. The "computer vision" program, nicknamed SEER, outperformed existing AI models in an object recognition test, Facebook said. It achieved a "classification accuracy score" of 84.2% when it attempted a test provided by ImageNet, which is a large visual database designed for use in visual object recognition software research. Basically, it tests whether an AI program can identify what's in a photo. New approachWhereas many AI models are trained on carefully labelled datasets, Facebook said SEER learned how to identify objects in photos by analyzing random, unlabeled and uncurated Instagram images. This AI technique is known as self-supervised learning (SEER is a play on SElf-supERvised). "The future of AI is in creating systems that can learn directly from whatever information they're given — whether it's text, images, or another type of data — without relying on carefully curated and labeled data sets to teach them how to recognize objects in a photo, interpret a block of text, or perform any of the countless other tasks that we ask it to," Facebook's researchers wrote in a blog post. "SEER's performance demonstrates that self-supervised learning can excel at computer vision tasks in real-world settings," they added. "This is a breakthrough that ultimately clears the path for more flexible, accurate, and adaptable computer vision models in the future." While this is only a research project, a Facebook spokesperson said the potential uses were relatively broad. They include improved automatically generated text for describing images to people with visual impairments, better automatic categorization of items sold on Facebook Marketplace, and better systems to keep harmful images away from the Facebook platform, the company said. Privacy issue?But many Instagram users may be surprised to hear that their images are being used to train Facebook AI systems. "We inform Instagram account holders in our data policy that we use the information we have to support research and innovation including in technological advancement like this," Priya Goyal, a software engineer at Facebook AI Research, told CNBC. Facebook said it will open source some of its software so that other researchers can experiment with it. "While we're sharing the details of our research and creating an open-sourced library that will enable other researchers to use self-supervised learning to train models on uncurated images, we are not sharing the images or SEER mode," said Goyal. Other big tech companies including Google and Microsoft are also trying to push the boundaries of computer vision. Last summer, Google published the SimCLRv2 computer vision model, while OpenAI published iGPT 2. |
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