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From "Gilles (JIRA)" <>
Subject [jira] [Commented] (MATH-917) More distance measurements are needed in o.a.c.m.stat.clustering.
Date Sat, 15 Dec 2012 12:30:12 GMT


Gilles commented on MATH-917:

These are indeed suitable additions.
However the design of this package is not a settled issue. And in particular, embedding the
notion of distance in a "...Point" class does not look right at first sight.

Apart from that, the whole "clustering" package should not be in "stat". We should have a
discussion on the "dev" ML about a consistent design of the classification algorithms (cf.

As we are close to the release (and supposedly have been in a feature-freeze for at least
two days, even if I did not formally announce it on the ML), I'll not rush to add your latest
patches without having a chance to let everyone think about the points which I've just raised.
Sorry or that.

> More distance measurements are needed in o.a.c.m.stat.clustering.
> -----------------------------------------------------------------
>                 Key: MATH-917
>                 URL:
>             Project: Commons Math
>          Issue Type: Improvement
>            Reporter: Reid Hochstedler
>             Fix For: 3.1
> Currently only Euclidean distance is used for distance measurement, it would be easy
to quickly add Manhattan and Chebyshev distance among others.

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