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Re: linreg

From: Ben Pfaff
Subject: Re: linreg
Date: Thu, 02 Feb 2006 16:20:20 -0800
User-agent: Gnus/5.110004 (No Gnus v0.4) Emacs/21.4 (gnu/linux)

Jason Stover <address@hidden> writes:

> I have been thinking about this. I can think of several types of
> models, including localized regression, generalized linear models and
> others, where the the model code needs to know about pspp via the
> coefficients only.  Classification and regression trees are the only
> outstanding example I can think of offhand which violate this rule. 
> There are enough models like this to justify a 'statlib' directory 
> full of models of this type, which do not know about pspp, and a
> single module available to them for coefficient data structures, which
> know about pspp's variable and value structures.
> Comments?

I seem to recall that when we met at Stanford this summer, it was
sort of a "side goal" of yours to write statistical libraries
that were useful both inside and outside PSPP.  If that's still
the case--I do like the idea--then I'd encourage you to take a
stab at it.

Is there a reason to create a separate "statlib" for statistical
libraries?  I don't know of a reason that the existing "lib"
wouldn't do.  The goal of the division of source code in PSPP
between "lib" and "src" is just a hint that code in "lib" is not
PSPP-specific, whereas code in "src" is.
"Unix... is not so much a product
 as it is a painstakingly compiled oral history
 of the hacker subculture."
--Neal Stephenson

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