Re: A question about Axiom capabilities
Mike Valenzuela <[email protected]> Wed, 27 Feb 2013 00:01:24 -0700
| Newsgroups | gmane.comp.mathematics.axiom.user |
|---|---|
| Message-ID | <CABhj+WxYvJuf2ePxhubX_jJkUAHYgnKkfAQVG4O=Yzjq9i1o4A@mail.gmail.com> |
--===============6303067201589581142== Content-Type: multipart/alternative; boundary=047d7b6dc43ca718a904d6af5769 --047d7b6dc43ca718a904d6af5769 Content-Type: text/plain; charset=ISO-8859-1 One other note - I forgot a logarithm in my example: D( ln( sum(p[k]*multivariate_normal(mu[k], Sigma), k) ) --> ... On Tue, Feb 26, 2013 at 8:39 PM, Mike Valenzuela <[email protected]>wrote: > The Matrix Cookbook is available online at: > http://orion.uwaterloo.ca/~hwolkowi/matrixcookbook.pdf > > It is simply a collection of matrix properties which are proved elsewhere. > I have done enough matrix calculus to know a basic approach (very similar > to the derivatives for indexed tensors in Maxima) if it has to be > implemented. The single entry matrix is sort of a generalization of the > Kronecker delta function used in matrix calculus. > > > On Tue, Feb 26, 2013 at 6:25 PM, u1204 <[email protected]> wrote: > >> Mike, >> >> These are interesting ideas but I don't know how to do what you >> want in the current version of Axiom. >> >> Where is this "Matrix Cookbook" you mention? >> >> Tim Daly >> > > --047d7b6dc43ca718a904d6af5769 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable One other note - I forgot a=A0logarithm=A0in my example:<div><br></div><div= >D( ln( sum(p[k]*multivariate_normal(mu[k], Sigma), k) ) --> ...</div><d= iv><br><br><div class=3D"gmail_quote">On Tue, Feb 26, 2013 at 8:39 PM, Mike= Valenzuela <span dir=3D"ltr"><<a href=3D"mailto:[email protected]"= target=3D"_blank">[email protected]</a>></span> wrote:<br> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex">The Matrix Cookbook is available online at:= =A0<a href=3D"http://orion.uwaterloo.ca/~hwolkowi/matrixcookbook.pdf" targe= t=3D"_blank">http://orion.uwaterloo.ca/~hwolkowi/matrixcookbook.pdf</a><div= > <br></div><div>It is simply a collection of matrix properties which are pro= ved elsewhere. I have done enough matrix calculus to know a basic approach = (very similar to the derivatives for indexed tensors in Maxima) if it has t= o be implemented. The single entry matrix is sort of a generalization of th= e Kronecker delta function used in matrix calculus.<div> <div class=3D"h5"><br> <br><div class=3D"gmail_quote">On Tue, Feb 26, 2013 at 6:25 PM, u1204 <span= dir=3D"ltr"><<a href=3D"mailto:[email protected]" target=3D"_bla= nk">[email protected]</a>></span> wrote:<br><blockquote class=3D"= gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-= left:1ex"> Mike,<br> <br> These are interesting ideas but I don't know how to do what you<br> want in the current version of Axiom.<br> <br> Where is this "Matrix Cookbook" you mention?<br> <br> Tim Daly<br> </blockquote></div><br></div></div></div> </blockquote></div><br></div> --047d7b6dc43ca718a904d6af5769-- --===============6303067201589581142== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Axiom-mail mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/axiom-mail --===============6303067201589581142==--