[Insight-developers] Renaming frenzy

[Stephen R. Aylward]

The word sample has a statistical meaning (a collection of instances -
generally from a population).

I too like measure or calculator...

s

Stetten wrote:
> 
> We've been happy with the word "sample" for individual measurements or
> calculations.  It's nice and short and somewhat general.
> 
> Paul Hughett wrote:
> 
> > Miller, James V (CRD) hath spake unto us, saying:
> >
> > > I'm assuming that you are saying that it is not a metric in the strict
> > > mathematical sense of one-to-one, if a > b, ax > bx, etc....
> >
> > For the record, a metric on a set X is a function d() from pairs of
> > elements of X to non-negative real numbers such that for any x,y,z in
> > X:
> >
> > (1) d(x,y) = d(y,x);
> >
> > (2) d(x,y) = 0 implies x = y; and
> >
> > (3) d(x,z) <= d(x,y) + d(y,z).
> >
> > You can call the function D(x) = d(x,0) a metric without causing me to
> > cringe too much, but I won't let you generalize to any measurment.
> >
> > > I tend to call anything that takes a "measurement" a "metric" (though
> > > this is not always appropriate). So a term like Calculator, Estimator,
> > > or Measurement is probably more appropriate.
> >
> > Actually, the term "statistic" is perfectly appropriate, since you can
> > consider an image as a member of the population of all images of a
> > given size and intensity statistics.  (A statistic is simply some
> > function of a random variable.)  Alternatively, you can consider the
> > center of gravity and central moments as the mean and covariance matrix
> > of the image considered as a probability distribution.
> >
> > All in all, though, I'm inclined to stick with ImageMomentCalculator;
> > calling it a statistic will probably confuse almost as many people as
> > calling it a metric.  Image moments are perfectly well defined in
> > themselves; the people who really need to know its relationship to
> > statistics probably already know it.
> >
> > Paul Hughett
> >
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> 
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-- 
===============================================
Stephen R. Aylward
Assistant Professor of Radiology
Adjunct Assistant Professor of Computer Science
http://www.cs.unc.edu/~aylward
aylward@unc.edu
(919) 966-9695