def setUp(self):
        random.seed(10)
        np.random.seed(10)
        
        N = 26
        d = 20
        
        means = .05 * np.random.randn(2, d)
        self.X_train = np.zeros((N, d))     
        self.Y_train = np.zeros(N) 
        for i in range(N):
            if np.random.random() > .5:
                y = 1
            else:
                y = 0
            self.X_train[i, :] = np.random.random(d) + means[y, :]
            self.Y_train[i] = 2-4*y
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.lib/src/openmdao/lib/surrogatemodels/test/test_response_surface.py/ResponseSurfaceTest.setUp/swapped operands of `-`