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Christophe Praz

Mars Spacecraft Reveal Comet Flyby Effects on Martian Atmosphere - 1 views

www.jpl.nasa.gov/...news.php

Mars atmosphere PHY

shared by Christophe Praz on 17 Nov 14 - No Cached
  • Christophe Praz on 17 Nov 14
     
    NASA and ESA spacecraft have gathered new information about the basic properties of the comet's nucleus (not 67p) and directly detected the effects on the Martian atmosphere. Dust from the comet impacted Mars and was vaporized high in the atmosphere, producing what was likely an impressive meteor shower. Eight different types of metal ions have been detected, including sodium, magnesium and iron. The satellites will now continue to look for long-term perturbations to Mars' atmosphere.
Guido de Croon

New theory allows drones to see distances with one eye - 2 views

www.tudelft.nl/...nes-afstanden-zien-met-een-oog

AI science BIO

shared by Guido de Croon on 07 Jan 16 - No Cached
  • Guido de Croon on 07 Jan 16
     
    Inspired by the work that was done at the ACT, I continued working on optical flow landing at TU Delft. Today Bio & Bio published my article on a new theory that allows drones to see distances with a single camera. It shows that drones approaching an object with an insect-inspired vision strategy become unstable at a specific distance from the object. Turning this weakness into a strength, drones can actually use the timely detection of that instability to estimate distance. The new theory will enable further miniaturization of autonomous drones and provides a new hypothesis on flying insect behavior. Video: https://www.youtube.com/watch?v=Fm7SMJp8EA4&feature=youtu.be Article: http://iopscience.iop.org/article/10.1088/1748-3190/11/1/016004
mkisantal

Better Language Models and Their Implications - 1 views

blog.openai.com/better-language-models

AI

shared by mkisantal on 15 Feb 19 - No Cached
  • mkisantal on 15 Feb 19
     
    Just read some of the samples of text generated with their neural networks, insane.
  • ...3 more comments...
  • mkisantal on 15 Feb 19
     
    "Pérez and his friends were astonished to see the unicorn herd. These creatures could be seen from the air without having to move too much to see them - they were so close they could touch their horns. While examining these bizarre creatures the scientists discovered that the creatures also spoke some fairly regular English. Pérez stated, "We can see, for example, that they have a common 'language,' something like a dialect or dialectic."
  • Marcus Maertens on 15 Feb 19
     
    Shocking. I assume that this could indeed have severe implications if it gets in the "wrong hands".
  • marliesarnhof on 18 Feb 19
     
    "Feed it the first few paragraphs of a Guardian story about Brexit, and its output is plausible newspaper prose, replete with "quotes" from Jeremy Corbyn, mentions of the Irish border, and answers from the prime minister's spokesman." https://www.youtube.com/watch?time_continue=37&v=XMJ8VxgUzTc "Feed it the opening line of George Orwell's Nineteen Eighty-Four - "It was a bright cold day in April, and the clocks were striking thirteen" - and the system recognises the vaguely futuristic tone and the novelistic style, and continues with: "I was in my car on my way to a new job in Seattle. I put the gas in, put the key in, and then I let it run. I just imagined what the day would be like. A hundred years from now. In 2045, I was a teacher in some school in a poor part of rural China. I started with Chinese history and history of science." (https://www.theguardian.com/technology/2019/feb/14/elon-musk-backed-ai-writes-convincing-news-fiction)
  • marliesarnhof on 18 Feb 19
     
    It's really lucky that it was OpenAI who made that development and Elon Musk is so worried about AI. This way at least they try to assess the whole spectrum of abilities and applications of this model before releasing the full research to the public.
  • mkisantal on 18 Feb 19
     
    They released a smaller model, I got it running on Sandy. It's fairly straight forward: https://github.com/openai/gpt-2
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