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propensive's profile
Jon Pretty
Jon Pretty
Jon Pretty
@propensive

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Jon Pretty

@propensive

Supporting Scala through professional training and open-source software. Responsible for Magnolia, Fury, Scala World and Functional Africa.

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propensive.com
Joined July 2010

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    1.  🔴 Lars Hupel‏ @larsr_h 10 Aug 2017

      There are probabilistic programs that terminate with probability 1, but with an average of infinitely many steps.

      5 replies 1 retweet 10 likes
    2. Jon Pretty‏ @propensive 10 Aug 2017
      Replying to @larsr_h

      Is this equivalent to a random walk returning to its starting position?

      1 reply 0 retweets 1 like
    3.  🔴 Lars Hupel‏ @larsr_h 10 Aug 2017
      Replying to @propensive

      Yes. That was precisely the example the lecturer used.

      2 replies 0 retweets 1 like
      Jon Pretty‏ @propensive 10 Aug 2017
      Replying to @larsr_h

      Ok, so maybe you could write a kind of parallel probabilistic program with infinite steps (average) which has a 34% chance of terminating...

      1:10 AM - 10 Aug 2017
      2 replies 0 retweets 0 likes
        1. Jon Pretty‏ @propensive 10 Aug 2017
          Replying to @propensive @larsr_h

          c.f. Pólya

          0 replies 0 retweets 0 likes
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        1. Vlad Patryshev‏ @vpatryshev 11 Aug 2017
          Replying to @propensive @larsr_h

          take prog1 and either run it with p=0.66 or terminate right away.

          0 replies 0 retweets 0 likes
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