search for: regband

Hello to everybody, Somebody know how I can apply the instruction (regband) of the package (locfit) to a multivariate covariate. In the instructions states that the formula has to have only one predictor. How can I use that when I have an unknown function with two predictors, m(X,Z)? Is there any other way to get a bivariate bandwidth in a local regression polynomial?...

Hi, I want to calculate the bandwith of a multivariate local polynomial regression such as the model is: Y=m(X,Z)+u. Please, somebody knows how I can do it in a multivariate case? In an univariate case I use the instrucction "regband" of the locfit package, but it is impossible to find a way to do it in the bivariate case. Please, help me. Thanks you in advance Alexandra [[alternative HTML version deleted]]