least squares method for the 3 unknowns
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Hi,
I have a problem how to calculate the 3 unknows using the least squares method.
I have a lot of same-looking equations like this: 46.2=C1*0.00134447+C2*0.006914+C3*0.01121469
where C1, C2 and C3 is unknow
How i can these unknow calculate with using the least squares method?
Here is code for example more equations
DMOS1=[46.2, 45.1, 47.3];
SSIM1=[0.00134447, 0.00114451, 0.00102085];
SSIM2=[0.006914, 0.006894, 0.007149];
SSIM3=[0.01121469, 0.01316054, 0.01604895];
A=[SSIM1; SSIM2; SSIM3];
A=A';
b=b';
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Réponses (2)
Renato Agurto
le 21 Déc 2015
Hello.
If
b = DMOS1'
then your solution is
A\b
2 commentaires
Renato Agurto
le 21 Déc 2015
Modifié(e) : Renato Agurto
le 21 Déc 2015
b = DMOS1'; %transposed
x=A\b; %not A/b!!
Marek Rousek
le 21 Déc 2015
Modifié(e) : Marek Rousek
le 21 Déc 2015
1 commentaire
Renato Agurto
le 21 Déc 2015
Modifié(e) : Renato Agurto
le 21 Déc 2015
A\b is least squares. you can try it with a larger number of equations
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