rawnlq

32 ms·

1. 301.▲
   by rawnlq 12y ago

   One public dataset that I think people should analyze is how competitive rating changes based on number of events you participated in. For example, in programming competitions the history ratings of everybody is public: http://co
2. 302.▲
   by rawnlq 12y ago

   According to this post it seems like you need 624 consecutive values from mt_rand to recover the seed: https://jazzy.id.au/2010/09/22/cracking_random_number_genera... (I agreed with everything you said, but i
3. 303.▲
   by rawnlq 12y ago

   Reddit comments: http://www.reddit.com/r/dataisbeautiful/comments/2vuvhf/prec... The author had a nice summary here: http://www.reddit.com/r/dataisbeautiful/comments/2vuvhf
4. 304.▲
   by rawnlq 12y ago

   A key modeling assumption with streaming data structures is that the stream itself is much much larger than than available memory. So you can't use any data structures that are linear in the stream size and have to trade off accuracy f
5. 305.▲
   by rawnlq 12y ago

   Another pretty good article on this topic: https://highlyscalable.wordpress.com/2012/05/01/probabilisti...
6. 306.▲
   by rawnlq 12y ago

   This post explains when you should and shouldn't use it: https://juanchopanzacpp.wordpress.com/2014/05/11/want-speed-...
7. 307.▲
   by rawnlq 12y ago

   I was hoping to see an implementation the alias method [1] for sampling from discrete distributions! Nonetheless very cool. [1] http://en.wikipedia.org/wiki/Alias_method or http://www.keithschwarz.com/d
8. 308.▲
   by rawnlq 12y ago

   Cool you seem to be the author. Instead of telling people that it's O(log n) you should just show benchmarks instead. Hitting L1 takes 1ns but main memory takes 100ns. So although you can say accessing an element in an array is always
9. 309.▲
   by rawnlq 12y ago

   Here you go: Õ (read soft-O) See: http://en.wikipedia.org/wiki/Big_O_notation#Extensions_to_th... (basically means ignore multiplicative log factors) Also, to play devil's advocate, why not say all log factors are
10. 310.▲
    by rawnlq 12y ago

    This reminds me of http://webdemo.myscript.com/#/demo/equation which recognizes handwritten equations. Also has an option to send to wolfram alpha to solve!
11. 311.▲
    by rawnlq 12y ago

    This is a talk about the evolution of Dropbox's architecture from 2012: http://www.youtube.com/watch?v=PE4gwstWhmc . It is incredibly detailed (down to the exact sql schema they use for file metadata etc).
12. 312.▲
    by rawnlq 12y ago

    Your comment reminded me of a (terrible) movie I watched as a kid that was set in a dystopian future. Here's an awkward scene where a girl tries to borrow another persons hand (a ring on the thumb and pinky are the earpiece and mic) to