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Article #778Re: Code for Rank Revealing QR Factorizations
From: G. W. Stewart
Date: Fri, 13 Nov 1992 08:24
Date: Fri, 13 Nov 1992 08:24
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In article <1992Nov12.215633.8030@cis.uab.edu> katholi@willis.cis.uab.edu (C.R. Katholi) writes: > > I think that I saw a notice somewhere not too long ago concerning >an implementation of the rank revealing QR factorization described by >T. Chan, "Rank Revealing QR Factorizations", Linear Algebra and Its >Applications, (1987). Can anyone point me to a place where I can obtain this >code, preferably by ftp. Please send responses to katholi@cis.uab.edu. > Thank you in advance for your help. There have been developments since Tony published his RRQR factorization. I have written a survey "Determining Rank in the Presence of Error," which can be obtained by anonymous ftp at thales.cs.umd.edu in pub/reports. The file is drpe.dvi (remember to transfer in the binary mode). Experimental FORTRAN code for a RRURV decomposition can be found in uast.f. You also might want to try browsing through the Abstracts or Contents file for related reports. Pete Stewart
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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!emory!europa.asd.contel.com!darwin.sura.net!haven.umd.edu!mimsy!stewart From: stewart@cs.umd.edu (G. W. Stewart) Newsgroups: sci.math.num-analysis Subject: Re: Code for Rank Revealing QR Factorizations Message-ID: <62019@mimsy.umd.edu> Date: 13 Nov 92 08:24:05 GMT Article-I.D.: mimsy.62019 References: <1992Nov12.215633.8030@cis.uab.edu> Sender: news@mimsy.umd.edu Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742 Lines: 18