tensor product

Charles R Harris charlesr.harris at gmail.com
Mon Oct 9 12:59:16 CDT 2006


On 10/9/06, Travis Oliphant <oliphant.travis at ieee.org> wrote:
>
> Charles R Harris wrote:
> >
> >
> > On 10/9/06, *Tim Hochberg* <tim.hochberg at ieee.org
> > <mailto:tim.hochberg at ieee.org>> wrote:
> >
> >     <snip>
> >
> >     Is this not the same things as numpy.multiply.outer(a, b)? (as
> >     opposed
> >     to outer(a, b), which appears to pretend that everything is a
> >     vector --
> >     I'm not sure what the point of that is).
> >
> >
> > Hmmm, yes, multiply.outer does do that. I thought that outer was short
> > for multiply.outer and that the behaviour had changed. So the question
> > is why outer does what it does.
> Unfortunately,  I don't know the answer to that.
>
> numpy.outer is the same as Numeric.outerproduct and does the same
> thing.  I'm not sure of the reason behind it.


Looks sorta like a matrix thing. Maybe it should be called outerflat or some
such.

Chuck
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