Mahout
  1. Mahout
  2. MAHOUT-444

Need on-line distribution summary statistics ... mean, median, min, max q25, q75

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.4
    • Component/s: None
    • Labels:
      None

      Description

      For the on-line learning algorithms it is very helpful to have robust on-line estimate of various summary statistics.

        Activity

        Ted Dunning created issue -
        Hide
        Ted Dunning added a comment -

        Here is a patch with an object that estimates the five quartiles, mean and standard deviation. The associated tests indicate that it is pretty much as accurate as if all of the samples were kept and the empirical rank statistics were computed directly.

        Show
        Ted Dunning added a comment - Here is a patch with an object that estimates the five quartiles, mean and standard deviation. The associated tests indicate that it is pretty much as accurate as if all of the samples were kept and the empirical rank statistics were computed directly.
        Ted Dunning made changes -
        Field Original Value New Value
        Status Open [ 1 ] Patch Available [ 10002 ]
        Ted Dunning made changes -
        Attachment MAHOUT-444.patch [ 12450117 ]
        Hide
        Hudson added a comment -

        Integrated in Mahout-Quality #151 (See http://hudson.zones.apache.org/hudson/job/Mahout-Quality/151/)
        MAHOUT-444 - fixed one test and disabled the other

        Show
        Hudson added a comment - Integrated in Mahout-Quality #151 (See http://hudson.zones.apache.org/hudson/job/Mahout-Quality/151/ ) MAHOUT-444 - fixed one test and disabled the other
        Sean Owen made changes -
        Status Patch Available [ 10002 ] Resolved [ 5 ]
        Assignee Ted Dunning [ tdunning ]
        Fix Version/s 0.4 [ 12314396 ]
        Resolution Fixed [ 1 ]
        Sean Owen made changes -
        Status Resolved [ 5 ] Closed [ 6 ]

          People

          • Assignee:
            Ted Dunning
            Reporter:
            Ted Dunning
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            Dates

            • Created:
              Updated:
              Resolved:

              Development