Displaying 1 result from an estimated 1 matches for "robustnonlinearregression_files".
2005 Nov 13
4
Robust Non-linear Regression
...obust non-linear regression to fit dose response curves.
Maybe I didnt look good enough, but I dind't find robust methods for NON
linear regression implemented in R. A method that looked good to me but is
unfortunately not (yet) implemented in R is described in
http://www.graphpad.com/articles/RobustNonlinearRegression_files/frame.htm
<http://www.graphpad.com/articles/RobustNonlinearRegression_files/frame.htm>
in short: instead of using the premise that the residuals are gaussian they
propose a Lorentzian distribution,
in stead of minimizing the squared residus SUM (Y-Yhat)^2, the objective
function is now
SUM...