Brad Anderson wrote:
> I have a continuous response variable that ranges from 0 to 750. I only
> have 90 observations and 26 are at the lower limit of 0,
What if you treated the information collected by that variable as really
two variables, one categorical variable indicating zero or non-zero
Good places to start:
Optimal feature extractors, that's better than PCA because you whiten your
inter class scatter and so put all inter class comparisons on the same
level. The good thing is this will also reduce your feature vector
dimensionality to c-1 (where c is # classes). PCA will not do
Corection typo: Should read 'Whiten intra class scatter'
"Mark Harrison" <[EMAIL PROTECTED]> wrote in message
news:FIif8.16518$[EMAIL PROTECTED].;
> Good places to start:
>
> Optimal feature extractors, that's better than PCA because you whiten your
> inter class scatter and so put all inter clas
i thought of a related data situation ...but at the opposite end
what if you were interested in the relationship between the time it takes
students to take a test AND their test score
so, you have maybe 35 students in your 1 hour class that starts at 9AM ...
you decide to note (by your watch) t
Brad Anderson wrote:
>
> I have a continuous response variable that ranges from 0 to 750. I
> only have 90 observations and 26 are at the lower limit of 0, which is
> the modal category.
If it's continuous, it can't really have categories (apart from those
induced by recording the variable to
Hello,
Thank you very much for your advises.
I would want to play a little with Software for Flexible Bayesian
Modeling by Radford M. Neal. But information supplied by documentation
that goes with this doesn't make me clear some concepts related to
priors mentioned in the documentation itself. D
At 01:39 PM 2/27/02 -0600, Jay Warner wrote:
> > >
> > >Not stressful 1__ 2__ 3__ 4__ 5__ 6__ 7__ Very stressful
just out of curiosity ... how many consider the above to be an example of a
bipolar scale?
i don't
now, if we had an item like:
sad happy
1 . 7
THEN the mid point b
At 04:11 PM 2/27/02 -0500, Rich Ulrich wrote:
>Categorizing the values into a few categories labeled,
>"none, almost none, " is one way to convert your scores.
>If those labels do make sense.
well, if 750 has the same numerical sort of meaning as 0 (unit wise) ... in
terms of what is being
I am humbled by the insight & background knowledge expressed by Mssrs.
Williams and McLean, not to mention the string of others. My lack of
academic experince in the subject matter is painfully clear. Now to see if
I can find Osgood et al. When I consider how many research projects and
social/p
On 27 Feb 2002 11:59:53 -0800, [EMAIL PROTECTED] (Brad Anderson)
wrote:
> I have a continuous response variable that ranges from 0 to 750. I
> only have 90 observations and 26 are at the lower limit of 0, which is
> the modal category. The mean is about 60 and the median is 3; the
> distributio
I have a continuous response variable that ranges from 0 to 750. I
only have 90 observations and 26 are at the lower limit of 0, which is
the modal category. The mean is about 60 and the median is 3; the
distribution is highly skewed, extremely kurtotic, etc. Obviously,
none of the power transf
Hi!
I am working on a linear regression model where both my x and y values
contain errors. In fact, they are repeated measurements of the same
samples -- I am doing this to see if the measuring device is working
properly. I found least square fitting formulas at
http://mathworld.wolfram.com/Leas
Dear EdStat readers,
During the next week (probably Friday or Monday), the EdStat list will
move to a new server. At that time, we will also start using a new
version of the Majordomo software. We hope that these changes will
reduce the amount of spam sent to the list. In addition, the threat
That is either a sloppiness in writing or reliance on the relationship
between eigen decomposition and SVD.
SSM - square symmetric matrix
AM - arbitrary matrix
In ED, SSM = Q E Q'
In SVD, AM = P D Q'
SSM = AM' AM
= Q D P' P D Q' = Q D D Q'
= Q E Q', if E = D D
I haven't checked
D & J Printing Corporation
2564 Cochise Drive
Acworth, GA 30102
(V)770-974-8228
(F)770-974-7223
[EMAIL PROTECTED]
--LASER, FAX AND COPIER PRINTER TONER CARTRIDGES--
*WE ACCEPT GOVERNMENT, SCHOOL AND UNIVERSITY PURCHASE ORDERS*
***FREE SHIPPING WITH ANY ORDER OF $200 OR MORE!!!***
What about Hat Matrix ? Mahalanobis distance ?
Yves
"Voltolini" <[EMAIL PROTECTED]> wrote in message
00f301c1be68$13413000$fde9e3c8@oemcomputer">news:00f301c1be68$13413000$fde9e3c8@oemcomputer...
> Hi,
>
> I would like to know if methods for detecting outliers
> using interquartil ranges are in
This is a multi-part message in MIME format.
--=_NextPart_000_0017_01C1BFC6.F446E040
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
O=BA=BB=B8=DE=C0=CF=C0=BA=C1=A4=BA=B8=C5=EB=BD=C5=B8=C1=C0=CC=BF=EB=C3=CB=
=C1=F8=B9=D7=C1=A4=BA=B8=BA=B8=C8
17 matches
Mail list logo
