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avibryant's profile
Avi Bryant
Avi Bryant
Avi Bryant
@avibryant

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Avi Bryant

@avibryant

Happiest when working on Random Forests from random beaches.

Galiano Island
avibryant.com
Joined November 2006

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    1. ((( ted_dunning )))‏ @ted_dunning 8 Jan 2015
      Replying to @J_

      2 billion is pretty big. That is the count for a single centroid. Moreover, even with duplicate values centroids are split /1 @J_

      1 reply 0 retweets 0 likes
    2. ((( ted_dunning )))‏ @ted_dunning 8 Jan 2015
      Replying to @ted_dunning

      And the limit on size is related to the number of points. Typically, there are hundreds to thousands of centroids. /2 @J_

      1 reply 0 retweets 0 likes
    3. ((( ted_dunning )))‏ @ted_dunning 8 Jan 2015
      Replying to @ted_dunning

      This limitation means that even if you have a single repeated value, you will be able to handle trillions of points @J_

      1 reply 0 retweets 0 likes
    4. Julien Le Dem‏ @J_ 8 Jan 2015
      Replying to @ted_dunning

      @ted_dunning then it's fine. What value do you recommend for compression?

      1 reply 0 retweets 0 likes
    5. ((( ted_dunning )))‏ @ted_dunning 8 Jan 2015
      Replying to @J_

      I typically like 50-200. Start bigger to trade memory for accuracy. See the paper for some hints on accuracy. @J_

      1 reply 0 retweets 0 likes
    6. Julien Le Dem‏ @J_ 8 Jan 2015
      Replying to @ted_dunning

      @ted_dunning Is there a mechanism to retain exact distribution when the number of distinct values is small?

      1 reply 0 retweets 0 likes
    7. Julien Le Dem‏ @J_ 8 Jan 2015
      Replying to @J_

      @ted_dunning I'm seeing some artifacts with less than 10 distinct values.

      2 replies 0 retweets 0 likes
    8. ((( ted_dunning )))‏ @ted_dunning 8 Jan 2015
      Replying to @J_

      Only when count > compression will any aggregation at all happen @J_ /2

      1 reply 0 retweets 0 likes
    9. Julien Le Dem‏ @J_ 8 Jan 2015
      Replying to @ted_dunning

      @ted_dunning that may be coming from the way I'm serializing it as a list of mean-count pairs and recreating a digest with add(mean, count)

      1 reply 0 retweets 0 likes
    10. Julien Le Dem‏ @J_ 8 Jan 2015
      Replying to @J_

      @ted_dunning and merging digests with digest.add(otherDigest)

      2 replies 0 retweets 0 likes
      Avi Bryant‏ @avibryant 8 Jan 2015
      Replying to @J_

      @J_ are you adding t-digest to algebird?

      6:07 PM - 8 Jan 2015
      2 replies 0 retweets 0 likes
        1. Julien Le Dem‏ @J_ 8 Jan 2015
          Replying to @avibryant

          @avibryant no, I want to systematically produce digests for all columns of our datasets. But that would be the next logical step.

          0 replies 0 retweets 1 like
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        2. P. Oscar Boykin‏ @posco 8 Jan 2015
          Replying to @avibryant

          @avibryant @J_ someone added an internal implementation at Twitter. we may have a pull few soon.

          1 reply 0 retweets 2 likes
        3. Andy Schlaikjer‏ @sagemintblue 3 Apr 2015
          Replying to @posco

          @posco @avibryant @J_ @themitak how's that coming? fixit week project?

          1 reply 0 retweets 3 likes
        4. P. Oscar Boykin‏ @posco 3 Apr 2015
          Replying to @sagemintblue

          @sagemintblue @avibryant @J_ @themitak someone implemented it last hackweek. Dig it up and release the code!

          1 reply 0 retweets 0 likes
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