From: "Terrell W. Fritz"
Date: Sat, 06 Jan 2001 13:32:43 -0700
Subject: Re: [TSSP] Virtual Secondary Database
Hi Paul, I just about have this incorporated into E-Tesla along with the Cee thing. Still fighting a basic programming error on my part but I just found the C book ;-) I did try this thing out in MathCad and it seems to work well! I hope to get to some other testing this weekend. I got swamped with twork and stuf but hings are calm now ;-)) Cheers, Terry At 10:46 AM 1/5/2001 +0000, you wrote: >Terry, > >I cobbled together a little curve fitter - gradient descent with >a dash of monte carlo, and left it running on a spare PC overnight. > >So far its come up with > > y = m * x + c > >where > > m = 0.73261 > c = 0.6040 > >and > > x = (k1 + hd)^k2 * > (k3 + b)^k4 * > (k5 + td)^k6 * > (k7 + awg)^k8 * > (k9 + h)^k10 * > (k11 + sr)^k12 * > (k13 + tb)^k14 > >in which > > k1 = 0.5836 > k2 = -0.4048 > k3 = 0.0423 > k4 = 0.1519 > k5 = -0.9487 > k6 = 0.1143 > k7 = 3.1508 > k8 = 0.0096 > k9 = 0.0721 > k10 = 0.0039 > k11 = 0.6325 > k12 = -0.0070 > k13 = 0.0793 > k14 = 0.0259 > >and the variables hd,b,td,awg,h,sr,tb are the seven configuration >space axes, with the modification: > > if (td is zero) then set td = 1.0 and set tb = 0.0 > >The computed value y is approximately equal to Lfac >where Lfac = les/ldc, to within an RMS deviation of 1.4% over >1200 vsd records. > >Cheers, >-- >Paul Nicholson, >Manchester, UK. >--
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.