RE: INITIAL OBJ FUNCTION ERROR
From: "Piotrovskij, Vladimir [JanBe]" <VPIOTROV@janbe.jnj.com>
Subject: RE: INITIAL OBJ FUNCTION ERROR
Date: Wed, 5 Apr 2000 07:58:40 +0200
Dear Raj,
Recently, I and a colleague of mine had the same problem with a much simpler model. I have no explanation yet, but what we did to obviate the problem was log-transformation of concentrations and fitting the model to logarithms (F in the $ERR block was also log-transformed). The residual error model was additive. Contact me if you need more details on the implementation.
Best regards,
Vladimir