competitors.py 文件源码

def train(self):
        eps = 1e-10
        for i in range(self.epo):
            if i % 1 == 0:
                self.show_error()

            A = np.asarray(self.A.copy())
            Z = np.asarray(self.Z.copy())
            start = time.time()
            Z1 = np.multiply(Z, np.asarray(self.A.transpose() * self.Y))
            Z = np.divide(Z1, eps + np.asarray(self.A.transpose() * self.A * self.Z)) # + eps to avoid divided by 0
            self.Z = np.asmatrix(Z)
            A1 = np.multiply(A, np.asarray( self.Y * self.Z.transpose()))
            A = np.divide(A1, eps + np.asarray( self.A * self.Z * self.Z.transpose()))
            end = time.time()
            self.A = np.asmatrix(A)
            self.time = self.time + end - start