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List:       r-devel
Subject:    Re: [Rd] aic() component in GLM-family objects
From:       Suharto Anggono Suharto Anggono via R-devel <r-devel () r-project ! org>
Date:       2018-06-19 8:29:04
Message-ID: 1551546968.1628513.1529396944082 () mail ! yahoo ! com
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In R, family has aic component since version 0.62. There is no aic component in \
family in R 0.61.3.

Looking at blame, https://github.com/wch/r-source/blame/tags/R-0-62/src/library/base/R/family.R \
, aic component in family is introduced in svn revision 640 \
(https://github.com/wch/r-source/commit/ac666741679b50bb1dfb5ce631717b375119f6ab): \
using aic(.) [Jim Lindsey]; use switch() rather than many if else else.. (MM)

Components of family is documented since R 2.3.0.

--------------------------------
> > > > > Ben Bolker 
> > > > > on Sun, 17 Jun 2018 11:40:38 -0400 writes:

    > FWIW p. 206 of the White Book gives the following for
    > names(binomial()): family, names, link, inverse, deriv,
    > initialize, variance, deviance, weight.

    >   So $aic wasn't there In The Beginning.  I haven't done
    > any more archaeology to try to figure out when/by whom it
    > was first introduced ...

Thank you Ben.

I think I was already suggesting that it was by Simon and Ross
and we cannot know who of the two.

    >  Section 6.3.3, on extending families, doesn't give any
    > other relevant info.

    > A patch for src/library/stats/man/family.Rd below: please
    > check what I've said about $aic and $mu.eta to make sure
    > they're correct!  I can submit this to the r bug list if
    > preferred.

I've spent quite some time checking this - to some extent.

Thank you for the patch. I will use an even slightly extended
version ((and using the correct '\eqn{\eta}{eta}' )).

Thank you indeed.
Martin

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