matlab default is the 2-norm. norm(X) is equivalent to norm(X,2) norm(X,'fro') is the frobenius norm. There are others and some special cases for vectors.
http://www.mathworks.com/help/matlab/ref/norm.html On Oct 22, 2012, at 12:14 PM, Jason Grout wrote: > On 10/22/12 11:08 AM, Charles R Harris wrote: > >> >> The 2-norm and the Frobenius norm are the same thing. > > For vectors, but I was talking about matrices and induced p-norms (sorry > for not being clear). Warren pointed out that the spectral norm (the > induced 2-norm) is used in Octave as the default. Does someone have > matlab to test their implementation? The fact that matlab has a > separate command for the Frobenius norm indicates that they also may be > using the spectral norm for the default matrix norm. > > Thanks, > > Jason > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
