Re: assumption of Classification

On 1 May 2005 20:04:05 -0700, "Reef Fish"
<Large_Nassau_Grouper@xxxxxxxxx> wrote:

>
> Richard Ulrich wrote:
> > On 28 Apr 2005 21:05:34 -0700, "Reef Fish"
> > <Large_Nassau_Grouper@xxxxxxxxx> wrote:
> >
> > >
> > > Richard Ulrich wrote:
> > > > On 26 Apr 2005 22:21:23 -0700, "Data Matter" <fungile@xxxxxxxxx>
> > > > wrote:,
> > "Data Matter"
> > - don't be concerned with Bob's rant about me.
> >
> > He did not contradict anything I said, and he added some detail.
>
> Really?
[... ]
Okay, more precisely: He did not contradict any ADVICE.

Read my advice in my post, and not Bob's version of it.

[... ]

> Exhibit 2.
>
> RU> normality is not the only assumption to be checked.
> RU> It's always good to check.
>
> RF> WHY? If the clustering model assumes nothing about normality?

Here is the original. I've corrected the attributions, and
restored an important sentence.

Data Matter >
> Nonetheless, normality is not the only assumption to be checked. Every
> method has its own list of assumptions and you should make sure that
> your data agree with the method you choose.

RU > It's always good to check.


[Snip exhibit 3 and 4... ]
RU >
> > Bob, when you read CLOSE enough to write your nastier
> > answers, you don't bother to check the text to see
> > that I wrote what you claimed. You screwed up again,
>
> I cited you verbatim and myself verbatim above, in the Exhibits.
> Where had I not read you correctly?

See above, for the easy one.
- if anyone else thinks I "snipped" anything valid and useful,
Exhibits 3 and 4, let me know.

[... ]
--
Rich Ulrich, wpilib@xxxxxxxx
http://www.pitt.edu/~wpilib/index.html
.

Relevant Pages

  • Re: assumption of Classification
    ... >> Richard Ulrich wrote: ... >> RU> normality is not the only assumption to be checked. ... If the clustering model assumes nothing about normality? ... That's a contradiction. ...
    (sci.stat.edu)
  • Bob Ling versus normality
    ... > him to look at normality and outliers in the scatterplots of the ... But he certainly does not need Richard Ulrich to make ... > "struggling beginner", ... > -- Bob. ...
    (sci.stat.math)
  • Re: assumption of Classification
    ... Here is a little more of the original, which Bob again ignores, ... normality is not the only assumption to be checked. ... Then Richard Ulrich ... That's a contradiction. ...
    (sci.stat.edu)
  • Richard Ultich the sci.stat.math resident Quack is beating his Dead Horses AGAIN
    ... Now, Richard Ulrich is back, in two tedious replay of his same self- ... RU> [snip, most of the stuff about normality testing, etc. ... After bungling my advice about the absolute lack of necessity om doing ...
    (sci.stat.math)