[Numpy-discussion] Two questions about PEP 465 dot product

Benjamin Root ben.root at ou.edu
Fri May 22 17:37:11 EDT 2015


Then add in broadcasting behavior...

On Fri, May 22, 2015 at 4:58 PM, Nathaniel Smith <njs at pobox.com> wrote:

> On May 22, 2015 1:26 PM, "Benjamin Root" <ben.root at ou.edu> wrote:
> >
> > That assumes that the said recently-confused ever get to the point of
> understanding it...
>
> Well, I don't think it's that complicated really. For whatever that's
> worth :-). My best attempt is here, anyway:
>
>   https://www.python.org/dev/peps/pep-0465/#semantics
>
> The short version is, for 1d and 2d inputs it acts just like dot(). For
> higher dimension inputs like (i, j, n, m) it acts like any other gufunc
> (e.g., everything in np.linalg) -- it treats this as an i-by-j stack of
> n-by-m matrices and is vectorized over the i, j dimensions. And 0d inputs
> are an error.
>
> -n
>
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