From rossini@blindglobe.net  Thu Sep 14 17:52:48 2000
From: rossini@blindglobe.net (A.J. Rossini)
Date: 14 Sep 2000 09:52:48 -0700
Subject: [Rd] Projects
In-Reply-To: <14785.241.670605.528570@gargle.gargle.HOWL>
 (Martin Maechler's message of "Thu, 14 Sep 2000 18:46:41 +0200")
References: <6rk8cfkmru.fsf@franz.stat.wisc.edu>
 <14785.241.670605.528570@gargle.gargle.HOWL>
Message-ID: <873dj2ncf3.fsf@jeeves.blindglobe.net>

>>>>> "MM" == Martin Maechler <maechler@stat.math.ethz.ch> writes:


    MM> 2) For Computer Scientists : "Differentiation" / Symbolic
    MM> derivatives,..

    MM>    Improve the possibilities of D() and deriv(), and document
    MM> them.  Make these user-extensible.

    MM>    Think about the hessian in addition to the gradient.

Even automating/specifications for numerical derivatives would be
nice. 


-- 
A.J. Rossini				Rsrch. Asst. Prof. of Biostatistics
BlindGlobe Networks (home/default)	rossini@blindglobe.net	
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[Rd] Projects
A.J. Rossini