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Bug 522 - Use relatively robust representation (RRR) algorithm to find eigenvalues and eigenvectors
Summary: Use relatively robust representation (RRR) algorithm to find eigenvalues and ...
Status: NEW
Alias: None
Product: Eigen
Classification: Unclassified
Component: Eigenvalues (show other bugs)
Version: 3.1
Hardware: All All
: Normal enhancement
Assignee: Nobody
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-10-17 05:25 UTC by Jianbo
Modified: 2019-12-04 11:56 UTC (History)
3 users (show)



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Description Jianbo 2012-10-17 05:25:34 UTC
LAPACK DSYEVR is the fastest driver (except for a few cases) for symmetric eigenproblems as described here http://www.netlib.org/lapack/lug/node30.html
and
I. DHILLON, A new O(n2) algorithm for the symmetric tridiagonal eigenvalue/eigenvector problem, Computer Science Division Technical Report no. UCB/CSD-97-971, University of California, Berkeley, CA, May 1997.

Eigen 3.1.1 uses a symmetric QR algorithm may be similar to LAPACK DSYEV/DSYEVX.

For reference only.
Comment 1 Nobody 2019-12-04 11:56:02 UTC
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