locally weighted least square regresion
6 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Dear all
I have a curve that I would like to apply locally weighted polynominal regresion on them. I do not how how define the span and the weight for this type of regresion.
Thanks for your help in advance
0 Commenti
Risposte (1)
KSSV
il 3 Ago 2022
t = linspace(0,2*pi) ;
y = sin(t) ;
p = polyfit(t,y,3) ;
xi = linspace(t(1),t(end)) ;
yi = polyval(p,xi) ;
plot(t,y,'r',xi,yi,'.b')
3 Commenti
KSSV
il 3 Ago 2022
Least square regression:
A*x = b ; % A is m*n matrix, b is column matrix m*1
x = A\b ; % solve for unknow x
Weighted least square regression:
W = diag(W); % where W is column matrix of weights
x = (W*A)\(w.*y);
Vedere anche
Categorie
Scopri di più su Linear and Nonlinear Regression in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!