[Numpy-discussion] matrix norm

Pauli Virtanen pav@iki...
Mon Oct 22 15:03:56 CDT 2012


Jason Grout <jason-sage <at> creativetrax.com> writes:
[clip]
> I think we've established that the other software mentioned does indeed 
> use the spectral norm by default.  I'm still curious: what was the 
> reason for breaking with the norm (pun intended :)?  Any chance that in 
> a (probably far distant) future release, the norm default could be 
> changed to conform with matlab/octave/mathematica's view of the world? 
> It's not a huge deal to me now that I know to watch out for it, but it 
> did just bite me and a student a few times.

The trail leads to here:
http://projects.scipy.org/numpy/attachment/ticket/36/numpy-6-norm-change-
default.diff

Seems like the chances of learning the reason why this change was done
are pretty slim.

-- 
Pauli Virtanen



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