public double CalculeErreur( Observation obs )
{
double somme = 0;
for (int i = 0; i < poids.Count; i++)
somme = somme + (poids[i] - obs.GetValue(i))
* (poids[i] - obs.GetValue(i));
return Math.Sqrt(somme);
}
public void ModifiePoids( Observation obs, double alpha)
{
for (int i=0; i< poids.Count; i++)
poids[i]=poids[i]-alpha*(poids[i]-obs.GetValue(i));
}