[ADMB Users] comparing highly parameterized models

Fowler, Mark Mark.Fowler at dfo-mpo.gc.ca
Fri May 3 05:04:51 PDT 2013

Thanks, John, I've got it. Slight misunderstanding, my subject header
was inadequate. I'm okay for comparing models where the number of
parameters are easily determined. My question concerned determination of
the number of 'real' parameters represented by deviation parameters. Ian
Taylor developed an approach to approximate the number of parameters for
comparing Stock Synthesis models (the excerpt in my email), and I was
asking for details on how a couple of scalars used by Ian were derived.
Both Ian and Steve Martell responded, giving me a handle on them. I'll
need to compute DIC's to estimate the effective number of parameters.

>	Mark Fowler
		Population Ecology Division
>	Bedford Inst of Oceanography
>	Dept Fisheries & Oceans
>	Dartmouth NS Canada
		B2Y 4A2
		Tel. (902) 426-3529
		Fax (902) 426-9710
		Email Mark.Fowler at dfo-mpo.gc.ca
		Home Tel. (902) 461-0708
		Home Email mark.fowler at ns.sympatico.ca

-----Original Message-----
From: users-bounces at admb-project.org
[mailto:users-bounces at admb-project.org] On Behalf Of John Sibert
Sent: May 2, 2013 4:03 PM
To: users at admb-project.org
Subject: Re: [ADMB Users] comparing highly parameterized models

A less garbled link perhaps

John Sibert
Emeritus Researcher, SOEST
University of Hawaii at Manoa
Honolulu HI (GMT-10)

Visit the ADMB project http://admb-project.org/

On 05/02/2013 08:15 AM, dave fournier wrote:
> This is far too  long to read, but we approached model selection in 
> the multifan cl model using approximate Bayes factors whihc enabled us

> to copmoare non nested models.
> This link might have survived being copied.
> http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&cad=rja&
> sqi=2&ved=0CEAQFjAD&url=http%3A%2F%2Fwww.soest.hawaii.edu%2Fpfrp%2Frep
> rints%2Fmultifan.pdf&ei=lKyCUc-lMYPHiwKk_YDQDA&usg=AFQjCNEW-tR28NpujfA
> kDNC5BDVIumdQhA&sig2=49idpQ7NXkxhrLbIYcULfg&bvm=bv.45960087,d.cGE
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