31 ago. 2011

Fitting the Model / Ajustando el Modelo

De la entrada anterior:
From the previous input:
Y=b0+b1x1+b2x2+……

Podemos resumir:
We can resume:
Y = X.B + e
Nuestro primer objetivo es encontrar los coeficientes de regression, para tener Bpred
Our first objective is to find regression coefficients (B), once find them we will have Bpred
Una vez encontrados podemos poner:
Once we have found it, we can write:
Ypred = X.Bpred
Y = Ypred +  epred
So:
Y = X.Bpred + epred

 

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