Forecast issues of x3 by local linear regression

[nilsnevertree]

It can be seen that the forecast performance on x3 is not good for the LLR. Need to investigate this.

[nilsnevertree]

Below an evolution of RMSE and cov-prob. can be seen.	Global Linear Regression	Local Linear Regression (sigma = 100)
Evolution of RMSE and 50% Cov. Prob.	Evolution of RMSE and 50% Cov. Prob.
Forecast examples	Forecast examples

[nilsnevertree]

Disussion about this will first be dropped.