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| sfa(frontier) [ Reply ] By: B E on 2020-03-05 20:03 | [forum:47453] |
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Dear all, it seems that I cannot get the Efficiency Effects Frontier to work. I always receive an error message: Fehler in optim(pars, fn = maxlik, y = y, X = X, sc = sc, hessian = TRUE, : nicht endlicher Wert von optim angegeben ---- Minimal example data( front41Data ) # Cobb-Douglas production frontier cobbDouglas <- sfa( log( output ) ~ log( capital ) | labour , data = front41Data ) ------------------------------ Than you for any hint! B. |
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