[Numpy-discussion] ufunc for sum of squared difference

[Stephan Hoyer]

On Mon, Nov 14, 2016 at 5:40 PM, Matthew Harrigan <
harrigan.matthew at gmail.com> wrote:

> Essentially it creates a reduce for a function which isn't binary.  I
> think this would be generally useful.
>

NumPy already has a generic enough interface for creating such ufuncs. In
fact, it's called a "generalized ufunc":
https://docs.scipy.org/doc/numpy/reference/c-api.generalized-ufuncs.html

I think you could already write "implicit reductions" using gufuncs?
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