[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Octave-bug-tracker] [bug #44061] U and V result matrices from svds are

From: Marco Caliari
Subject: [Octave-bug-tracker] [bug #44061] U and V result matrices from svds are not othogonal
Date: Thu, 29 Jan 2015 12:53:58 +0000
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0

Follow-up Comment #4, bug #44061 (project octave):


[U,S,V] = svds(rand(n))

gives orthogonal matrices, both Matlab and Octave (U'*U=1, not U*U').

2) But for this particular matrix, it does not work. It seems a problem of
eigs when computing only some of the eigenvalues

[V,s] = eigs(eye(2),1)

V is not the matrix of eigenvectors as described in the help and as it is in
Matlab. The dimensions are even wrong (and it is not just the transposed).


Reply to this item at:


  Message sent via/by Savannah

reply via email to

[Prev in Thread] Current Thread [Next in Thread]