Python Matrix.add_ones_left Exemples

Exemple #1

 def fit(self, X: Matrix, y: Matrix):
     X = X.add_ones_left()
     self.coef = (((X.transp() * X).inverse()) * X.transp()) * y

Exemple #2

 def L2(self, X: Matrix, y: Matrix, lmbd: float):
     X = X.add_ones_left()
     E = Matrix(nrows=X.ncolumns, ncolumns=X.ncolumns)
     for i in range(0, E.nrows):
         E.arr[i][i] = lmbd
     self.coef = ((((X.transp() * X) + E).inverse()) * X.transp()) * y