I got the point after reading the double shift QR section of http://people.inf.ethz.ch/arbenz/ewp/lnotes.html
2014/1/3 Jiahao Chen <[email protected]> > Have you tried Golub and Van Loan's Matrix Computations? In the 3/e, it is > on p. 418 ff (Section 8.3.5). They call it zero-chasing, but it's the same > thing. > > > I've read about "chasing the bulge" and the implicit QR algorithm, but I >> haven't been able to find a description (or implementation/psuedocode) that >> I could easily understand. Is there any chance you could point me to an >> implementation or pseudocode or a good explanation of the algorithm? Do you >> happen to know of an exposition of the implicit QR algorithm that uses >> Householder projections rather than Givens rotations? >> >> -- Med venlig hilsen Andreas Noack Jensen
