given the model y = x1 / 1+ b1x2^b2 given data y<-c(2,3,4,5,6) x1<- c(0.23,0.32,0.43,0.54,0.65) x2<-c(0.11,021,0.31,0.41,0.33) initial parameter b1=0.023 b2=0.045 i am able to find the parameter of the above model usingnls method, can u please give hint on how i can solve the same model as above using MM robust estimate to obtain the parameter. i mean u can illustrate using the above information to enable me extend to what i am doing thanks [[alternative HTML version deleted]]
> given the model > > y = x1 / 1+ b1x2^b2 >... > i am able to find the parameter of the above model usingnls method, can u > please give hint on how i can solve the same model as above using MM > robust?estimate to obtain the parameter. i mean u can illustrate using the > above information to enable me extend to what i am doinghave a look at ?nlrob in the robustbase package. S Ellison ******************************************************************* This email and any attachments are confidential. Any use...{{dropped:8}}