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dibblego's profile
Tony Morris
Tony Morris
Tony Morris
@dibblego

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Tony Morris

@dibblego

Power ∧ Attitude ⇒ Performance

Brisbane, Australia
tmorris.net
Joined May 2009

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    1. Daniel Capo Sobral‏ @dcsobral 27 Aug 2013

      Regarding http://jliszka.github.io/2013/08/12/a-frequentist-approach-to-probability.html …, Distribution doesn't look like a monad to me -- where's point? Maybe a co-monad, as we have "get"?

      6 replies 1 retweet 2 likes
    2. Tony Morris‏ @dibblego 27 Aug 2013
      Replying to @dcsobral

      @dcsobral out is both a monad and comonad. It is simply Identity.

      1 reply 0 retweets 0 likes
    3. Tony Morris‏ @dibblego 27 Aug 2013
      Replying to @dibblego

      @dcsobral s/out/it sorry

      1 reply 0 retweets 0 likes
    4. Dave Griffith‏ @dave_griffith 27 Aug 2013
      Replying to @dibblego

      @dibblego @dcsobral point(x).get = x, always. The simplest possible distribution. Don't see how Distribution[X] can be Identity[X], though

      1 reply 0 retweets 0 likes
    5. Tony Morris‏ @dibblego 27 Aug 2013
      Replying to @dave_griffith

      @dave_griffith @dcsobral I might be missing it. case class Distribution[A](a: get). Where is the difference?

      1 reply 0 retweets 0 likes
    6. Dave Griffith‏ @dave_griffith 27 Aug 2013
      Replying to @dibblego

      @dibblego @dcsobral Many distributions not of that form. size(Distribution[X]) >> size(X). More similar to Hom[X] than Identity[X]

      1 reply 0 retweets 0 likes
    7. Tony Morris‏ @dibblego 27 Aug 2013
      Replying to @dave_griffith

      @dave_griffith @dcsobral These are operations on Distribution. The structure is the same right?

      1 reply 0 retweets 0 likes
    8. Dave Griffith‏ @dave_griffith 27 Aug 2013
      Replying to @dibblego

      @dibblego @dcsobral Except "get" is in general nondeterministic, and thus should really be modeled differently (which break comonad).

      2 replies 0 retweets 0 likes
      Tony Morris‏ @dibblego 27 Aug 2013
      Replying to @dave_griffith

      @dave_griffith @dcsobral Which laws break? https://github.com/tonymorris/probability-monad/blob/master/src/main/scala/probability-monad/Distribution.scala#L441 …

      6:29 PM - 27 Aug 2013
      2 replies 0 retweets 0 likes
        1. New conversation
        1. Dave Griffith‏ @dave_griffith 27 Aug 2013
          Replying to @dibblego

          @dibblego @dcsobral Meant that "get" should really take a nondeterminism source ("Random") as argument, otherwise breaks ref. transparency.

          1 reply 0 retweets 0 likes
        2. Tony Morris‏ @dibblego 27 Aug 2013
          Replying to @dave_griffith

          @dave_griffith @dcsobral Randomisation, when done pure-functionally/nicely, is also a comonad. https://github.com/NICTA/rng/blob/master/src/main/scala/com/nicta/rng/RngOp.scala#L4 … Which laws break?

          0 replies 0 retweets 0 likes
          3. End of conversation
        2. New conversation
        1. Daniel Capo Sobral‏ @dcsobral 27 Aug 2013
          Replying to @dibblego

          @dibblego @dave_griffith I don't think that pure makes sense.

          2 replies 0 retweets 0 likes
        2. Tony Morris‏ @dibblego 27 Aug 2013
          Replying to @dcsobral

          @dcsobral @dave_griffith Does it obey the necessary laws?

          1 reply 0 retweets 0 likes
        3. Show replies

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