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Article #714Re: P-dimen min of function, NR in C, powell() - anyone got it to run properly?
From: furio ercolessi
Date: Fri, 02 Oct 1992 04:35
Date: Fri, 02 Oct 1992 04:35
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1392 bytes
In article <1afig6INNapa@network.ucsd.edu>, jracine@weber.ucsd.edu (Jeff Racine) writes: |>I am trying to minimize a multidimensional function of 5 arguments |>without using derivatives. Numerical recipes in C has a routine called |>powell(). I have it up and running, but one problem remains. |> [... description of bug ...] well the fortran version works (although it's slowwww on my 40-parameters problem). of course i am not saying this to raise the silly language war, but rather to suggest that perhaps comparing the two versions may help in tracking the bug. In fortran it's 40 lines long. furio -- Furio Ercolessi Materials Research Laboratory | Intl School for Advanced Studies Univ. of Illinois at Urbana-Champaign | Trieste, Italy furio@uiuc.edu | furio@sissa.it
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Newsgroups: sci.math.num-analysis Path: arc1-ca.pugleaf.net!sparky!uunet!usc!sdd.hp.com!ux1.cso.uiuc.edu!news.cso.uiuc.edu!uimrl7.mrl.uiuc.edu!ercolessi From: ercolessi@uimrl7.mrl.uiuc.edu (furio ercolessi) Subject: Re: P-dimen min of function, NR in C, powell() - anyone got it to run properly? References: <1afig6INNapa@network.ucsd.edu> Message-ID: <BvH8rr.1FH@news.cso.uiuc.edu> Sender: usenet@news.cso.uiuc.edu (Net Noise owner) Reply-To: ercolessi@uimrl7.mrl.uiuc.edu (furio ercolessi) Organization: MRL - UIUC Date: Fri, 2 Oct 1992 04:35:50 GMT Lines: 17