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SUMMARY:Vandermonde with Arnoldi - Yuji Nakatsukasa (University of Oxford\
 ; National Institute of Informatics)
DTSTART:20191210T133000Z
DTEND:20191210T140000Z
UID:TALK135517@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Vandermonde matrices are exponentially ill-conditioned\, rende
 ring the familiar &ldquo\;polyval(polyfit)&rdquo\; algorithm for polynomia
 l interpolation and least-squares fitting ineffective at higher degrees. W
 e show that Arnoldi orthogonalization fixes the problem. 
LOCATION:Seminar Room 1\, Newton Institute
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