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From venkatesha murthy <>
Subject Re: [math] Include quartiles estimated using PSquarePercentile in SummaryStatistics
Date Mon, 13 Oct 2014 19:45:01 GMT
Hi Phil,

Though i did not add to StatisticalSummary i was actually working on a
DescriptiveStatisticalSummary for all the Storeless variants inclusive of
PSquarePercentile. Would it help if you can actually implement
SummaryStatisitcs with an extended interface such as
DescriptiveStatisticalSummary ? below.

That said i actually wanted to discuss the new storelessvariant of
descriptive statistics.
a) DescriptiveStatisticalSummary - an extended interface for
StatisticalSummary (adds a Generic type that can cater for store full and
b) DescriptiveStorelessStatistics - Storeless variant of
c) SynchronizedDescriptiveStorelessStatistics - a synchronized wrapper.

Test case classes added to the same.

Please let me know on this i could also accomodate the changes to summary
stats based on this change here.
Also please let me know if this could be raised as a jira ticket to pursue.


On Sat, Oct 11, 2014 at 1:10 AM, Phil Steitz <> wrote:

> Now that we have a "storeless" percentile estimator, we can add
> quartile computation to SummaryStatistics.  Any objections to my
> adding this?  I could optionally add a boolean constructor argument
> to avoid the overhead of maintaining these stats.  Or more
> generally, add a bitfield encoding the exact set of stats the user
> wants to maintain.  If there are no objections to the addition, I
> will open a JIRA.
> Phil
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