Posted by
Hector Maletta on
Oct 11, 2006; 6:00pm
URL: http://spssx-discussion.165.s1.nabble.com/Model-selection-tp1071432p1071437.html
King,
This message was duly distributed to the list. Perhaps it was also reported
to you as rejected. Server behavior is a little contradictory at times.
Hector
-----Mensaje original-----
De: SPSSX(r) Discussion [mailto:
[hidden email]] En nombre de King
Douglas
Enviado el: 11 October 2006 12:47
Para:
[hidden email]
Asunto: Re: Model selection
Folks,
This is a test...not a response to K S Scot. I seem to be unable to post
to the SPSS-X listserv. My query is returned as rejected by the server as
"spam." Any ideas?
Please e-mail me at
[hidden email]
Thanks...and sorry, K S Scot
Stats Q <
[hidden email]> wrote:
Hi Marta,
Thanks for your e-mail. The paper says that a Log-linear model was used.
From what you are saying then, I guess I've interpreted things incorrectly
then i.e., log-likelihood ratio tests will be part of the output from the
BIC analysis. Do you know if is the case that the lower the log-likelihood
value, the better the model fits the data? And if so, how low does the value
have to be to be considered low? And why would the log-likelihood value need
to be reported as well as a BIC value?
Thanks. I appreciate the advice.
K S Scot
---------------------------------
From: Marta García-Granero <
[hidden email]>
Reply-To: Marta García-Granero <
[hidden email]>
To:
[hidden email]
Subject: Re: Model selection
Date: Wed, 11 Oct 2006 11:42:39 +0200
>Hi K S Scot
>
>KSS> I'm reading a paper that has used log likelihood ratio tests and
Bayesian
>KSS> Information Criterion for model selection. I'm not sure whether of
either
>KSS> of these were done in SPSS, so am looking for a little advice on the
>KSS> procedure. That is, can anyone direct me to some good resources or
texts or
>KSS> provide me with any information about these statistical techniques?
>
>You don't mention the type of model (linear, logistic, Cox,
>Poisson, nominal, ordinal.. regression).
>
>LR tests are part of the standard output of SPSS for any model but
>linear regression. BIC can be obtained for linear regression models
>(subcommand /SELECTION, it must be added thru syntax).
>
>Right now I can't think of a book that covers those topics, I'll check
>the University library and see if I find someone.
>
>
>--
>Regards,
>Dr. Marta García-Granero,PhD mailto:
[hidden email]
>Statistician
>
>---
>"It is unwise to use a statistical procedure whose use one does
>not understand. SPSS syntax guide cannot supply this knowledge, and it
>is certainly no substitute for the basic understanding of statistics
>and statistical thinking that is essential for the wise choice of
>methods and the correct interpretation of their results".
>
>(Adapted from WinPepi manual - I'm sure Joe Abrahmson will not mind)
---------------------------------
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