Re: [R] Technological/Logistic substitution model.

2014-07-30 Thread Jeff Newmiller
You are repeating yourself. At least post as a reply to your earlier post. Does RSiteSearch("technological logistic") help? --- Jeff NewmillerThe . . Go Live... DCN:Basics:

Re: [R] Technological/Logistic substitution model.

2014-07-30 Thread Peter Maclean
 Any one with an idea of estimating the Technological/Logistic substitution model. The model is specified as: fi(t(j)) = 1/[1-exp(-alpa(t(i))-beta(i)] for t 0 fi(t(j)) = 1-sum(f(j-1))- sum(f(j+1)) for tb <=t <= tc fi(t(j)) = 1/[1+ exp(alpas(t(i)-betas(i))] for t >=tc and alphas >0. T The model

Re: [R] Technological/Logistic Substitution Model

2014-07-24 Thread Peter Maclean
Any one with an idea of estimating the Technological/Logistic substitution model. The model is specified as: fi(t(j)) = 1/[1-exp(-alpa(t(i))-beta(i)]    for t 0 fi(t(j)) = 1-sum(f(j-1))- sum(f(j+1))   for tb <=t <= tc fi(t(j)) = 1/[1+ exp(alpas(t(i)-betas(i))]  for t >=tc and alphas >0.   The