Re: [R] Is SEM package of R suitable for sem analysis

2009-12-26 Thread Bruno Falissard
A few years ago it could have been true, but now the package has improved
(especially with the bootstrap procedure).
At the moment there is no argument to recommend AMOS.
Of course, some software like Mplus are actually better, but very
specialized (and rather expensive).
This is only a personal point of view.
Bruno




Bruno Falissard
INSERM U669, PSIGIAM
"Paris Sud Innovation Group in Adolescent Mental Health"
Maison de Solenn
97 Boulevard de Port Royal
75679 Paris cedex 14, France
tel : (+33) 6 81 82 70 76
fax : (+33) 1 58 41 28 43
web site : http://perso.wanadoo.fr/bruno.falissard/



-Message d'origine-
De : r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] De
la part de Reeyarn_???_10928113
Envoyé : samedi 26 décembre 2009 12:50
À : R-help@r-project.org
Objet : [R] Is SEM package of R suitable for sem analysis


Dears,

I'm a college student and In doing my statistics homework.

I use R with SEM package as my tool for sem analysis,
but my teacher told me AMOS is more suitable for such analysis.

Could someone help tell me whether it is true
that some commercial software is better accepted in academic fields?

Sorry if I should not post such topics here.

-- 
Best Regards,
Reeyarn T. Lee

Accounting Dept, Guanghua School of Management,
Peking University, Beijing, P.R. China

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Re: [R] PCA and automatic determination of the number of components

2009-04-20 Thread Bruno Falissard
You can also use parallel analysis using the scree.plot function of the
"psy" package.
Regards,
Bruno 


----
Bruno Falissard
INSERM U669, PSIGIAM
"Paris Sud Innovation Group in Adolescent Mental Health"
Maison de Solenn
97 Boulevard de Port Royal
75679 Paris cedex 14, France
tel : (+33) 6 81 82 70 76
fax : (+33) 1 58 41 28 43
web site : http://perso.wanadoo.fr/bruno.falissard/



-Message d'origine-
De : r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] De
la part de nikolay12
Envoyé : lundi 20 avril 2009 05:38
À : r-help@r-project.org
Objet : [R] PCA and automatic determination of the number of components



Hi all, 

I have relatively small dataset on which I would like to perform a PCA. I am
interested about a package that would also combine a method for determining
the number of components (I know there are plenty of approaches to this
problem). Any suggestions about a package/function?

thanks,

Nick
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View this message in context:
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Sent from the R help mailing list archive at Nabble.com.

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Re: [R] concordance correlation coefficient using R

2008-12-07 Thread Bruno Falissard
You can look at the fonction icc in the package psy.
Best regards,
Bruno





Bruno Falissard
INSERM U669, PSIGIAM
"Paris Sud Innovation Group in Adolescent Mental Health"
Maison de Solenn
97 Boulevard de Port Royal
75679 Paris cedex 14, France
tel : (+33) 6 81 82 70 76
fax : (+33) 1 58 41 28 43
web site : http://perso.wanadoo.fr/bruno.falissard/



-Message d'origine-
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De
la part de paul murima
Envoyé : dimanche 7 décembre 2008 16:23
À : r-help@r-project.org; [EMAIL PROTECTED]
Objet : [R] concordance correlation coefficient using R


Hi.
I have data which i would want to assess the degree of  agreement
between two assays, e.g., to evaluate reproducibility or for
inter-rater reliability. I have used the  Pearson product-moment
correlation coefficient. It looks good ranginging between 0.90 to
0.998. Though this looks good. I am told the Concordance correlation
coefficient will give a better picture of how reproducible the assay
is.
Does any one know how to run such a test using R? If so can you kindly
provide the code, and bit of explanations to spruce it up?

Thank you

Paul

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Re: [R] R package to perform Horn's parallel analysis

2008-02-26 Thread falissard
And also scree.plot psy package.



Bruno Falissard
INSERM U669, PSIGIAM
"Paris Sud Innovation Group in Adolescent Mental Health"
Maison de Solenn
97 Boulevard de Port Royal
75679 Paris cedex 14, France
tel : (+33) 6 81 82 70 76
fax : (+33) 1 58 41 28 43
web site : http://perso.wanadoo.fr/bruno.falissard/



-Message d'origine-
De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De
la part de William Revelle
Envoyé : mardi 26 février 2008 16:44
À : Karen Douglas; R-help@r-project.org
Objet : Re: [R] R package to perform Horn's parallel analysis

see fa.parallel in the psych package


At 7:27 AM -0800 2/26/08, Karen Douglas wrote:
>I am seeking information on whether anyone has written code to perform
>Horn's parallel analysis (a procedure that informs the selection of the
>proper number of components in PCA) in R.
>
>
>
>Thank you in advance for any help you can provide. Please respond
>off-list at the email address below.
>
>Karen Douglas
>
>
>
>***
>
>Karen Douglas, PhD
>
>Status of Reading Instruction Institute
>
>Associate Director, Research and Policy
>
>International Reading Association
>
>444 North Capitol St. NW
>
>Suite 524
>
>Washington, DC 20001
>
>[EMAIL PROTECTED]
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>Phone: 202-624-8473
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-- 
William Revelle http://personality-project.org/revelle.html
Professor
http://personality-project.org/personality.html
Department of Psychology http://www.wcas.northwestern.edu/psych/
Northwestern University http://www.northwestern.edu/
Use R for statistics:
http://personality-project.org/r

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