From bolker at zoo.ufl.edu  Wed Aug 15 20:58:56 2007
From: bolker at zoo.ufl.edu (Ben Bolker)
Date: Wed, 15 Aug 2007 14:58:56 -0400
Subject: [Rd] [Fwd: behavior of L-BFGS-B with trivial function triggers
 bug in stats4::mle]
In-Reply-To: <Pine.LNX.4.64.0708151932240.31744@gannet.stats.ox.ac.uk>
References: <46C0D1FF.3020005@zoo.ufl.edu> <20070814182635.GB29808@cs.cas.cz>
	<loom.20070814T203613-433@post.gmane.org>
	<46C1FF19.7000003@biostat.ku.dk>
	<Pine.LNX.4.64.0708151932240.31744@gannet.stats.ox.ac.uk>
Message-ID: <46C34CF0.2090402@zoo.ufl.edu>

Prof Brian Ripley wrote:
> On Tue, 14 Aug 2007, Peter Dalgaard wrote:
>
>> Ben Bolker wrote:
>>> Petr Savicky <savicky <at> cs.cas.cz> writes:
>>>
>>>
>>>
>>>> Could you also include a script, which reproduces the problem? Just
>>>> to see under which conditions the problem occurs and how it
>>>> looks like exactly.
>>>>
>>>> Petr Savicky.
>>>>
>>>>
>>>
>>>   The original post has such a script, just under the dashed line
>>> and above the diff/patch.  Sorry if I wasn't clear about that.
>>>
>>>
>> Patch inserted in r-devel now.
>
> And all optim() methods now work on zero-length 'par'.
>
  So my patch would now seem to be unnecessary -- keep it for 
belt-and-suspenders purposes,
or remove it to minimize code complexity?

  thanks very much!

   Ben Bolker



[Rd] [Fwd: behavior of L-BFGS-B with trivial function triggers bug in stats4::mle]
Ben Bolker