Automatic Differentiation is not applicable to symbolics, see: https://en.wikipedia.org/wiki/Automatic_differentiation
moorepants.info +01 530-601-9791 On Thu, Mar 1, 2018 at 11:16 AM, Aaron Meurer <[email protected]> wrote: > I haven't heard of tangent before. > > Can you clarify more what the project would do? Wouldn't it be enough > to just run sympy.python() on an expression, then pass that to > tangent? > > Aaron Meurer > > On Thu, Mar 1, 2018 at 12:46 PM, Navjot Kukreja <[email protected]> wrote: > > Hello everyone > > > > I am Navjot Kukreja, a PhD student at Imperial College London. I would > like > > to propose a GSoC project to enable automatic differentiation of Sympy > > constructs using tangent (https://github.com/google/tangent). Tangent > does > > source-to-source automatic differentiation directly on python code. The > > ability to perform automatic differentiation on python code that contains > > sympy constructs would enable/simplify the use of sympy in defining > various > > optimization problems, which is a very broad class of problems in > > HPC/Science/Engineering. It also makes it easier to use sympy in the > > construction of DSL compilers. > > > > > > Has this been considered before? Is there someone in the community that > has > > tried this or needs this? > > > > > > Thank you > > > > Navjot Kukreja > > > > https://github.com/navjotk > > > > > > PS: I am one of the developers of Devito (https://github.com/opesci/ > devito), > > a sympy-based DSL for the rapid development of high-performance > > finite-difference simulations. The primary use of devito is as part of > > PDE-constrained optimization problems where the problem definition, > > including the objective function, governing PDE, interpolators etc. are > > provided as a combination of sympy expressions and pure python. > > > > > > -- > > You received this message because you are subscribed to the Google Groups > > "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [email protected]. > > To post to this group, send email to [email protected]. > > Visit this group at https://groups.google.com/group/sympy. > > To view this discussion on the web visit > > https://groups.google.com/d/msgid/sympy/7968e52a-98d9- > 411b-987c-b26ab7be0059%40googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sympy. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/sympy/CAKgW%3D6LUd4H%3Dsnwkzr9yUn23XPSF2SoirF4DSHd3 > 4suwHFF2fg%40mail.gmail.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAP7f1AheK%3Dv7SL2kWvO4Xd2sPUDC_g3uHrHX0KY-Wc0nsH8CWg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
