On Apr 16, 1:50 pm, Alec Mihailovs <[email protected]> wrote: > > Or even more simple -if A is the matrix consisting of all non-erased > columns, use A.transpose()*(A*A.transpose()).inverse() for decoding, > applying it to the non-erased part.
And if A*A.transpose() is singular, the same thing, probably, could be done with the matrix, obtained from A by removing a column, but I'm not sure - there may be, perhaps, cases, when removing more than 1 column is necessary - that would make the procedure more complicated (in the worst cases.) Alec -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
