Re: mid-rad, inf-sup, a caution...
> Date: Mon, 10 May 2010 09:52:27 +0200
> From: =?ISO-8859-15?Q?J=FCrgen_Wolff_von_Gudenberg?=
> <wolff@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> To: Dan Zuras Intervals <intervals08@xxxxxxxxxxxxxx>
> CC: "Hossam A. H. Fahmy" <hfahmy@xxxxxxxxxxxxxxxxxxxxxxx>,
> stds-1788@xxxxxxxxxxxxxxxxx
> Subject: Re: mid-rad, inf-sup, a caution...
>
> P1788
>
> in order to KISS to keep our standard simple, we
> should not add mid-rad as a first-class format.
>
> Juergen
>
> Dan Zuras Intervals schrieb:
> >> . . .
> >>
> o Prof. Dr. J. Wolff v. Gudenberg, Informatik II
> / \ Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg
> InfoII o Tel.: +49 931 / 31 86602
> / \ Uni E-Mail: wolff@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> o o Wuerzburg
Juergen,
Lest I be misunderstood, let me say that eliminating
or deprecating mid-rad was not the intention of my
caution. Although I can see how it might be read
that way.
It was my intent to caution that adding mid-rad as a
first class interval type on the same order as inf-sup
intervals means that we have a lot of work to do to
make that sensible.
My personal opinion is that Hossam's suggestion has
merit & we should seriously consider it.
We could use KISS to: get in, get out, right a quick
& correct inf-sup only standard & be home by Christmas.
But if we do a disservice to the interval community by
leaving half of them out of it, what have we really
accomplished?
If one approach were clearly & provably superior to
the other things would be different. But it is not
so. Both have merit. And both will be used whether
we standardize them or not.
I think it is better to standardize both rather than
confuse the world with approved & non-approved
intervals.
So since we cannot eliminate mid-rad as a concept,
our question becomes: Do we admit it as an deprecated
addition to an inf-sup standard or do we write a
standard with both on equal footing?
Before Hossam wrote his note I was in favor of the
former. Now I think the latter has merit. Ultimately
you all are more qualified to answer this question
than I am.
But I think it deserves your serious thought.
End of soapbox. :-)
Dan