Slashdot Mirror


User: sk19842

sk19842's activity in the archive.

Stories
0
Comments
4
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 4

  1. What's the distribution? on Physicist Uses Laser Light As Fast, True-Random Number Generator · · Score: 2

    I agree that the numbers are random, in the sense that they're subject to chance, but how confident are they that they know the sampling distribution? That is, can you use this method to generate a random sample a with uniform distribution, or a gamma distribution, or anything else you'd like to use random numbers for?

    With quantum observation errors, I wonder if they're assuming the sampling distribution is normal, in which case they'd have to do some work to convert it to give the kind of output that rand() gives. Problems would likely show up in the tails of the distribution (near 0 and 1). TFA doesn't mention any of the statistical issues, only the physics ones.

  2. Re:It is caused by on 2011 MacBook Pros Confirmed To Crash Under Load · · Score: 4, Informative

    iStat isn't necessary to cause the problem. Most people seem to be able to reproduce the issue by opening Photo Booth and trying to install/compile Boost from MacPorts (per these directions). FWIW, following these directions just crashed my 2011 15" MBP.

    It seems to be an ATI graphics card issue, because some people report that they can get a stable machine by setting their graphics to integrated only with gfxCardStatus.

  3. Re:Dupe on Cryptography Expert Sounds Alarm At Possible Math Hack · · Score: 1

    Sorta, but not quite a dupe. This post also includes speculation about what would happen if there were math errors in chips. The reference to Schneier's discovery about elliptic curve PRNG's was just to whet our appetite. But deliberate backdoors and ones created by mistake are two different things.

  4. Original article on Cryptography Expert Sounds Alarm At Possible Math Hack · · Score: 5, Informative

    TFA is just a summary of an article yesterday in the NYT: http://www.nytimes.com/2007/11/17/technology/17code.html?ref=technology