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Following SpaceX down the rabbit hole -- The Space Review - 4 views

  • He then went on to remind the press that his company’s goal is to continue to lower the cost of access to space because high launch costs were “the fundamental factor preventing humanity from becoming a spacefaring civilization.”
  • First, two Falcon Heavy launches could field a return to the Moon
  • Second, a single Falcon Heavy could launch a Mars sample return mission.
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  • Also possible with a single launch: a first ever human mission to an asteroid.
  • what effect Falcon Heavy might have on the costs of supporting the International Space Station. The ability to launch twice the supply capacity provided by the shuttle at something on the order of 20 percent of the cost changes the calculus entirely. So much so in fact, it opens the door for contemplating an entirely different future for ISS in which it never follows Mir into the Pacific.
  • Following conclusions offered by the Augustine Committee, the Obama Administration cancelled Project Constellation as unaffordable under existing budget limits, and supported instead the ambling, but cost-contained “flexible path.” If the Falcon Heavy is available, however, the rationale for selecting the flexible path—because it’s the only thing we can afford—simply doesn’t exist.
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    an analysis of implications of the Falcon Heavy announcement
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Throwable Panoramic Ball Camera // Jonas Pfeil - 3 views

shared by Dario Izzo on 14 Oct 11 - No Cached
Ma Ru liked it
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    Good to solve the Landing problem!!!! No skew due to perspective and gimballed by definition
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    Very very nice idea! Unfortunately samples show they still have quite some work to do on the image processing side... which is interesting because there are very good open-source solutions for stitching.
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The challenges of Big Data analysis @NSR_Family - 2 views

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    Big Data bring new opportunities to modern society and challenges to data scientists. On the one hand, Big Data hold great promises for discovering subtle population patterns and heterogeneities that are not possible with small-scale data. On the other hand, the massive sample size and high dimensionality of Big Data introduce unique computational and statistical challenges, including scalability and storage bottleneck, noise accumulation, spurious correlation, incidental endogeneity and measurement errors. These challenges are distinguished and require new computational and statistical paradigm. This paper gives overviews on the salient features of Big Data and how these features impact on paradigm change on statistical and computational methods as well as computing architectures.
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Amount of profanity per programming language - 8 views

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    And the winner is... C++ :) Love the comment on Slashdot: "C++ Templates will turn the most pious programmer into a curse-slinging, chain-smoking alcoholic."
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    Nice one... However note the sample could be biased, because I'd expect some interaction between "using github" and "being a curse-slinging, chain-smoking alcoholic" ;-)
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    Fair enough :)
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Better Language Models and Their Implications - 1 views

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    Just read some of the samples of text generated with their neural networks, insane.
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    "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."
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    Shocking. I assume that this could indeed have severe implications if it gets in the "wrong hands".
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    "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)
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    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.
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    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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Adaptive foveated single-pixel imaging with dynamic supersampling - 4 views

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    "In contrast to conventional multipixel cameras, single-pixel cameras capture images using a single detector that measures the correlations between the scene and a set of patterns. However, these systems typically exhibit low frame rates, because to fully sample a scene in this way requires at least the same number of correlation measurements as the number of pixels in the reconstructed image."
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    Is that the same method Andrej and Jai use in their super-telescope Ariadna?
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Scientists release first analysis of rocks plucked from speeding asteroid - 0 views

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    On the topic of asteroid composition :)
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