On 9/17/19 12:48 PM, varin sacha via R-help wrote:
Dear R-helpers, Doing dput(x) and dput(y_obs), the 2 vectors are not the same length (1800 for y_obs and 2000 for x) How can I solve the problem ? Here is the reproducible R code # # # # # # # # # # library(mgcv) library(earth) n<-2000 x<-runif(n, 0, 5) y_model<- 0.1*x^3 - 0.5 * x^2 - x + 10 # y_obs<-rnorm(n*0.9, y_model, 0.1)+rnorm(n*0.1, y_model, 0.5) # maybe not exactly your goal?
You didn't lay out any goals for analysis, so let me guess what was intended:
I suspect that you were hoping to model a mixture composed of 90% from one distribution and 10% from another. If I'm right about that guess then you would instead wat to join the samples from each distribution:
y_obs<-c( rnorm(n*0.9, y_model, 0.1), rnorm(n*0.1, y_model, 0.5) ) -- David
gam_model<- gam(y_obs~s(x)) mars_model<- earth(y_obs~x) MSE_GAM<-mean((gam_model$fitted.values - y_model)^2) MSE_MARS<-mean((mars_model$fitted.values - y_model)^2) MSE_GAM MSE_MARS # # # # # # # # # # # # # # # # ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
