I also found this link mljohnson.pharm.virginia.edu/pdfs/314.pdf see equations 20 and 3, which suggest c should stay. I must read this more carefully, though... Sébastien
Le 24 avril 2012 21:42, Sébastien Brisard <sebastien.bris...@m4x.org> a écrit : > Ooops, I hit the wrong key... So here is the rest of my previous message... > > Hi Gilles, >> >> Does anyone object to the estimated error be defined as >> >> errors[i] = FastMath.sqrt(covar[i][i]); >> >> ? >> >> >> Best regards, >> Gilles >> > I'm not an expert on parameter estimation, but I'm not sure about the > removal of the c prefactor in the above expression. See for example > NR, chapter 15. In particular, equation 15.6.4 might be of interest. > I also found this thread > http://www.physicsforums.com/showthread.php?t=47534 > which certainly does not provide a definite answer, but the formula > suggests that c should stay. > > Again, I'm not claiming your suggestion is wrong, I would just like to > find a reference which clearly states the right answer... > One way to check the formula would be to test against another > software. I know that gnuplot provides error estimates on the > parameters, I'm happy to run it with the data set of your choice. > > Best regards, > Sébastien --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
