Re: [R] modifying model coefficients

Thanks for the tip. I actually had to learn a bit of matrix multiplication and ended up calculating the RMSE this way. scores_lr <- t(coeffs_alldata) %*% t(df_train) rmseTrain <- (mean(((scores_lr)- trainY)^2))^0.5 full script and results here if you are interested. http://ausdm09.freeforums.or

Re: [R] modifying model coefficients

On 10/18/2009 11:26 PM, tdm wrote: > I have build a model but want to then manipulate the coefficients in some > way. > > I can extract the coefficients and do the changes I need, but how do I then > put these new coefficients back in the model so I can use the predict > function? > > my_model <

[R] modifying model coefficients

I have build a model but want to then manipulate the coefficients in some way. I can extract the coefficients and do the changes I need, but how do I then put these new coefficients back in the model so I can use the predict function? my_model <- lm(x ~ . , data=my_data) my_scores <- predict(my