From owner-chemistry@ccl.net Fri Oct 28 17:40:01 2005
From: "Prashanth Athri athriprashanth,yahoo.com" <owner-chemistry!^!server.ccl.net>
To: CCL
Subject: CCL: COMFA q²
Message-Id: <-29823-051028162047-5981-pHDsReG8D4F4ySgQbhdLdQ!^!server.ccl.net>
X-Original-From: Prashanth Athri <athriprashanth]^[yahoo.com>
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Date: Fri, 28 Oct 2005 12:53:58 -0700 (PDT)
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Sent to CCL by: Prashanth Athri [athriprashanth!=!yahoo.com]
Hi,

On the Partial Least Squares Analysis dialog box:

1. Click on the SAMPLS button and set the number of
components to a value higher than what you would
expect the dimensionality of your data to be. Then
click on "Run PLS".
2. A dialog informing you about SAMPLS pops up- click
OK.
3. On the terminal window, you will eventually see
crossvalidated r-squared [alias q-squared]. The number
of components you will choose for the final run will
be the one for which the q-squared is the highest.

Hope this helps.

-Prashanth
--- "Antoine FORTUNE
Antoine.Fortune^_^ujf-grenoble.fr"
<owner-chemistry+*+ccl.net> wrote:

> 
> Sent to CCL by: Antoine FORTUNE [Antoine.Fortune-
> -ujf-grenoble.fr]
> Hi all,
> I'm working with sybyl MSS to do comfa study. As I
> run a PLS, sybyl 
> gives r² value in the report. Where / how can i get
> the q² value ? It's 
> not in the report log.
> Thank's
> 
> Antoine
> 
> 
> 
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