Re: [Numpy-discussion] Automatic differentiation (was Re: second-order gradient)

2009-03-11 Thread Sebastian Walter
There are several possibilities, some of them are listed on http://en.wikipedia.org/wiki/Automatic_differentiation == pycppad http://www.seanet.com/~bradbell/pycppad/index.xml pycppad is a wrapper of the C++ library CppAD ( http://www.coin-or.org/CppAD/ ) the wrapper can do up to second order de

Re: [Numpy-discussion] Automatic differentiation (was Re : second-order gradient)

2009-03-10 Thread Osman
Hi, I just saw this python package : PyDX which may answer your needs. The original URL is not working, but the svn location exists. http://gr.anu.edu.au/svn/people/sdburton/pydx/doc/user-guide.html svn co http://gr.anu.edu.au/svn/people/sdburton/pydx br -osman __

Re: [Numpy-discussion] Automatic differentiation (was Re: second-order gradient)

2008-10-30 Thread Rob Clewley
> In your experience, is this functionality enough to start a separate > package, or should we try to include it somewhere else? Otherwise we > could think of a new SciKit. I confess to knowing no details about scikits so I don't know what the difference really is between a "new package" and a sc

Re: [Numpy-discussion] Automatic differentiation (was Re: second-order gradient)

2008-10-30 Thread Stéfan van der Walt
2008/10/30 Rob Clewley <[EMAIL PROTECTED]>: >> http://en.wikipedia.org/wiki/Automatic_differentiation > > That would be great, but wouldn't that be best suited as a utility > requiring Sympy? You'll want to take advantage of all sorts of > symbolic classes, especially for any source code transforma

[Numpy-discussion] Automatic differentiation (was Re: second-order gradient)

2008-10-30 Thread Rob Clewley
> Maybe we should focus on writing a decent 'deriv' function then. I > know Konrad Hinsen's Scientific had a derivatives package > (Scientific.Functions.Derivatives) that implemented automatic > differentiation: > > http://en.wikipedia.org/wiki/Automatic_differentiation That would be great, but w