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[statespace] changed tests to check model integrity with GP model
This commit is contained in:
Max Zwiessele
parent
13cf717231
commit
7984e17805
1 changed files with 160 additions and 152 deletions
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@ -17,326 +17,334 @@ from .state_space_main_tests import generate_x_points, generate_sine_data, \
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class StateSpaceKernelsTests(np.testing.TestCase):
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def setUp(self):
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pass
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def run_for_model(self, X, Y, ss_kernel, kalman_filter_type = 'regular',
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use_cython=False, check_gradients=True,
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optimize=True, optimize_max_iters=1000,predict_X=None,
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compare_with_GP=True, gp_kernel=None,
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use_cython=False, check_gradients=True,
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optimize=True, optimize_max_iters=250, predict_X=None,
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compare_with_GP=True, gp_kernel=None,
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mean_compare_decimal=10, var_compare_decimal=7):
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m1 = SS_model.StateSpace(X,Y, ss_kernel,
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m1 = SS_model.StateSpace(X,Y, ss_kernel,
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kalman_filter_type=kalman_filter_type,
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use_cython=use_cython)
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if check_gradients:
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self.assertTrue(m1.checkgrad())
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if optimize:
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m1.optimize(optimizer='lbfgsb',max_iters=optimize_max_iters)
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if 1:#optimize:
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m1.optimize(optimizer='lbfgsb',max_iters=2)
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if compare_with_GP and (predict_X is None):
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predict_X = X
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if (predict_X is not None):
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x_pred_reg_1 = m1.predict(predict_X)
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x_quant_reg_1 = m1.predict_quantiles(predict_X)
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self.assertTrue(compare_with_GP)
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if compare_with_GP:
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np.random.seed(254856)
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m2 = GPy.models.GPRegression(X,Y, gp_kernel)
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m2.optimize(optimizer='lbfgsb', max_iters=optimize_max_iters)
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#print(m2)
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#m2.randomize()
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m2.optimize(max_iters=optimize_max_iters)
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m1[:] = m2[:]
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if (predict_X is not None):
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x_pred_reg_1 = m1.predict(predict_X)
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x_quant_reg_1 = m1.predict_quantiles(predict_X)
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x_pred_reg_2 = m2.predict(predict_X)
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x_quant_reg_2 = m2.predict_quantiles(predict_X)
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# Test values
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#print np.max(np.abs(x_pred_reg_1[0]-x_pred_reg_2[0]))
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np.testing.assert_almost_equal(np.max(np.abs(x_pred_reg_1[0]- \
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x_pred_reg_2[0])), 0, decimal=mean_compare_decimal)
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# Test variances
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#print np.max(np.abs(x_pred_reg_1[1]-x_pred_reg_2[1]))
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np.testing.assert_almost_equal(np.max(np.abs(x_pred_reg_1[1]- \
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x_pred_reg_2[1])), 0, decimal=var_compare_decimal)
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np.testing.assert_array_almost_equal(x_pred_reg_1[0], x_pred_reg_2[0], 3)
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np.testing.assert_array_almost_equal(x_pred_reg_1[1], x_pred_reg_2[1], 3)
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np.testing.assert_array_almost_equal(x_quant_reg_1[0], x_quant_reg_2[0], 3)
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np.testing.assert_array_almost_equal(x_quant_reg_1[1], x_quant_reg_2[1], 3)
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np.testing.assert_almost_equal(m1.log_likelihood(), m2.log_likelihood(), 3)
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np.testing.assert_array_almost_equal(m1.gradient, m2.gradient, 2)
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def test_Matern32_kernel(self,):
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np.random.seed(234) # seed the random number generator
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=10.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_Matern32(1,active_dims=[0,])
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gp_kernel = GPy.kern.Matern32(1,active_dims=[0,])
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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compare_with_GP=True,
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gp_kernel=gp_kernel,
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mean_compare_decimal=10, var_compare_decimal=7)
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gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=5)
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def test_Matern52_kernel(self,):
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np.random.seed(234) # seed the random number generator
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=10.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_Matern52(1,active_dims=[0,])
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gp_kernel = GPy.kern.Matern52(1,active_dims=[0,])
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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optimize = True, predict_X=X,
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compare_with_GP=True, gp_kernel=gp_kernel,
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mean_compare_decimal=8, var_compare_decimal=7)
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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optimize = True, predict_X=X,
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compare_with_GP=True, gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=5)
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def test_RBF_kernel(self,):
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np.random.seed(234) # seed the random number generator
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=10.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_RBF(1,active_dims=[0,])
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gp_kernel = GPy.kern.RBF(1,active_dims=[0,])
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ss_kernel = GPy.kern.sde_RBF(1, Y.var(), X.ptp()/2., active_dims=[0,])
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gp_kernel = GPy.kern.RBF(1, Y.var(), X.ptp()/2., active_dims=[0,])
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=1, var_compare_decimal=1)
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predict_X=X,
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gp_kernel=gp_kernel,
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optimize_max_iters=1000,
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mean_compare_decimal=2, var_compare_decimal=2)
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def test_periodic_kernel(self,):
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np.random.seed(322) # seed the random number generator
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=10.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_StdPeriodic(1,active_dims=[0,])
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ss_kernel.lengthscale.constrain_bounded(0.27, 1000)
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ss_kernel.period.constrain_bounded(0.17, 100)
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gp_kernel = GPy.kern.StdPeriodic(1,active_dims=[0,])
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gp_kernel.lengthscale.constrain_bounded(0.27, 1000)
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gp_kernel.period.constrain_bounded(0.17, 100)
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gp_kernel.period.constrain_bounded(0.17, 100)
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=3, var_compare_decimal=3)
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=3, var_compare_decimal=3)
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def test_quasi_periodic_kernel(self,):
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np.random.seed(329) # seed the random number generator
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=10.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_Matern32(1)*GPy.kern.sde_StdPeriodic(1,active_dims=[0,])
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ss_kernel.std_periodic.lengthscale.constrain_bounded(0.25, 1000)
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ss_kernel.std_periodic.period.constrain_bounded(0.15, 100)
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gp_kernel = GPy.kern.Matern32(1)*GPy.kern.StdPeriodic(1,active_dims=[0,])
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gp_kernel.std_periodic.lengthscale.constrain_bounded(0.25, 1000)
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gp_kernel.std_periodic.period.constrain_bounded(0.15, 100)
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gp_kernel.std_periodic.period.constrain_bounded(0.15, 100)
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=1, var_compare_decimal=2)
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=1, var_compare_decimal=2)
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def test_linear_kernel(self,):
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np.random.seed(234) # seed the random number generator
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(X,Y) = generate_linear_data(x_points=None, tangent=2.0, add_term=20.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_Linear(1,X,active_dims=[0,]) + GPy.kern.sde_Bias(1, active_dims=[0,])
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gp_kernel = GPy.kern.Linear(1, active_dims=[0,]) + GPy.kern.Bias(1, active_dims=[0,])
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self.run_for_model(X, Y, ss_kernel, check_gradients= False,
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predict_X=X,
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gp_kernel=gp_kernel,
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self.run_for_model(X, Y, ss_kernel, check_gradients= False,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=5)
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def test_brownian_kernel(self,):
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np.random.seed(234) # seed the random number generator
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(X,Y) = generate_brownian_data(x_points=None, kernel_var=2.0, noise_var = 0.1,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_Brownian()
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gp_kernel = GPy.kern.Brownian()
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=10, var_compare_decimal=7)
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=5)
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def test_exponential_kernel(self,):
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np.random.seed(234) # seed the random number generator
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np.random.seed(12345) # seed the random number generator
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(X,Y) = generate_linear_data(x_points=None, tangent=1.0, add_term=20.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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plot = False, points_num=10, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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ss_kernel = GPy.kern.sde_Exponential(1, active_dims=[0,])
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gp_kernel = GPy.kern.Exponential(1, active_dims=[0,])
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=6)
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ss_kernel = GPy.kern.sde_Exponential(1, Y.var(), X.ptp()/2., active_dims=[0,])
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gp_kernel = GPy.kern.Exponential(1, Y.var(), X.ptp()/2., active_dims=[0,])
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Y -= Y.mean()
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self.run_for_model(X, Y, ss_kernel, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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optimize_max_iters=1000,
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mean_compare_decimal=2, var_compare_decimal=2)
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def test_kernel_addition(self,):
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#np.random.seed(329) # seed the random number generator
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np.random.seed(333)
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=5.0, noise_var=2.0,
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plot = False, points_num=100, x_interval = (0, 40), random=True)
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(X1,Y1) = generate_linear_data(x_points=X, tangent=1.0, add_term=20.0, noise_var=0.0,
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plot = False, points_num=100, x_interval = (0, 40), random=True)
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# Sine data <-
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Y = Y + Y1
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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def get_new_kernels():
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ss_kernel = GPy.kern.sde_Linear(1,X) + GPy.kern.sde_StdPeriodic(1,active_dims=[0,])
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ss_kernel.std_periodic.lengthscale.constrain_bounded(0.25, 1000)
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ss_kernel.std_periodic.period.constrain_bounded(3, 8)
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gp_kernel = GPy.kern.Linear(1) + GPy.kern.StdPeriodic(1,active_dims=[0,])
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gp_kernel.std_periodic.lengthscale.constrain_bounded(0.25, 1000)
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gp_kernel.std_periodic.period.constrain_bounded(3, 8)
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return ss_kernel, gp_kernel
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# Cython is available only with svd.
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ss_kernel, gp_kernel = get_new_kernels()
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self.run_for_model(X, Y, ss_kernel, kalman_filter_type = 'svd',
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use_cython=True, optimize_max_iters=10, check_gradients=False,
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predict_X=X,
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gp_kernel=gp_kernel,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=5)
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ss_kernel, gp_kernel = get_new_kernels()
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self.run_for_model(X, Y, ss_kernel, kalman_filter_type = 'regular',
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use_cython=False, optimize_max_iters=10, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=5)
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ss_kernel, gp_kernel = get_new_kernels()
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self.run_for_model(X, Y, ss_kernel, kalman_filter_type = 'svd',
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use_cython=False, optimize_max_iters=10, check_gradients=False,
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predict_X=X,
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gp_kernel=gp_kernel,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=5, var_compare_decimal=5)
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def test_kernel_multiplication(self,):
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np.random.seed(329) # seed the random number generator
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=10.0, noise_var=2.0,
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plot = False, points_num=50, x_interval = (0, 20), random=True)
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
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def get_new_kernels():
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ss_kernel = GPy.kern.sde_Matern32(1)*GPy.kern.sde_Matern52(1)
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gp_kernel = GPy.kern.Matern32(1)*GPy.kern.sde_Matern52(1)
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return ss_kernel, gp_kernel
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ss_kernel, gp_kernel = get_new_kernels()
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#import ipdb;ipdb.set_trace()
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self.run_for_model(X, Y, ss_kernel, kalman_filter_type = 'svd',
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use_cython=True, optimize_max_iters=10, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=-1, var_compare_decimal=-1)
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=2, var_compare_decimal=2)
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ss_kernel, gp_kernel = get_new_kernels()
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self.run_for_model(X, Y, ss_kernel, kalman_filter_type = 'regular',
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use_cython=False, optimize_max_iters=10, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=-1, var_compare_decimal=-1)
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=2, var_compare_decimal=2)
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ss_kernel, gp_kernel = get_new_kernels()
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self.run_for_model(X, Y, ss_kernel, kalman_filter_type = 'svd',
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use_cython=False, optimize_max_iters=10, check_gradients=True,
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=-1, var_compare_decimal=0)
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predict_X=X,
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gp_kernel=gp_kernel,
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mean_compare_decimal=2, var_compare_decimal=2)
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def test_forecast(self,):
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"""
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Test time-series forecasting.
|
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"""
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|
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|
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# Generate data ->
|
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np.random.seed(339) # seed the random number generator
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#import pdb; pdb.set_trace()
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(X,Y) = generate_sine_data(x_points=None, sin_period=5.0, sin_ampl=5.0, noise_var=2.0,
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plot = False, points_num=100, x_interval = (0, 40), random=True)
|
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|
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|
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(X1,Y1) = generate_linear_data(x_points=X, tangent=1.0, add_term=20.0, noise_var=0.0,
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plot = False, points_num=100, x_interval = (0, 40), random=True)
|
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|
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|
||||
Y = Y + Y1
|
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|
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X_train = X[X <= 20]
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Y_train = Y[X <= 20]
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Y_train = Y[X <= 20]
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X_test = X[X > 20]
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Y_test = Y[X > 20]
|
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|
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X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
|
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X_train.shape = (X_train.shape[0],1); Y_train.shape = (Y_train.shape[0],1)
|
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X_test.shape = (X_test.shape[0],1); Y_test.shape = (Y_test.shape[0],1)
|
||||
|
||||
X.shape = (X.shape[0],1); Y.shape = (Y.shape[0],1)
|
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X_train.shape = (X_train.shape[0],1); Y_train.shape = (Y_train.shape[0],1)
|
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X_test.shape = (X_test.shape[0],1); Y_test.shape = (Y_test.shape[0],1)
|
||||
# Generate data <-
|
||||
|
||||
|
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#import pdb; pdb.set_trace()
|
||||
|
||||
|
||||
def get_new_kernels():
|
||||
periodic_kernel = GPy.kern.StdPeriodic(1,active_dims=[0,])
|
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gp_kernel = GPy.kern.Linear(1, active_dims=[0,]) + GPy.kern.Bias(1, active_dims=[0,]) + periodic_kernel
|
||||
gp_kernel.std_periodic.lengthscale.constrain_bounded(0.25, 1000)
|
||||
gp_kernel.std_periodic.period.constrain_bounded(0.15, 100)
|
||||
|
||||
|
||||
periodic_kernel = GPy.kern.sde_StdPeriodic(1,active_dims=[0,])
|
||||
ss_kernel = GPy.kern.sde_Linear(1,X,active_dims=[0,]) + \
|
||||
GPy.kern.sde_Bias(1, active_dims=[0,]) + periodic_kernel
|
||||
|
||||
|
||||
ss_kernel.std_periodic.lengthscale.constrain_bounded(0.25, 1000)
|
||||
ss_kernel.std_periodic.period.constrain_bounded(0.15, 100)
|
||||
|
||||
|
||||
return ss_kernel, gp_kernel
|
||||
|
||||
|
||||
ss_kernel, gp_kernel = get_new_kernels()
|
||||
self.run_for_model(X_train, Y_train, ss_kernel, kalman_filter_type = 'regular',
|
||||
use_cython=False, optimize_max_iters=30, check_gradients=True,
|
||||
predict_X=X_test,
|
||||
gp_kernel=gp_kernel,
|
||||
mean_compare_decimal=0, var_compare_decimal=-1)
|
||||
|
||||
predict_X=X_test,
|
||||
gp_kernel=gp_kernel,
|
||||
mean_compare_decimal=2, var_compare_decimal=2)
|
||||
|
||||
|
||||
ss_kernel, gp_kernel = get_new_kernels()
|
||||
self.run_for_model(X_train, Y_train, ss_kernel, kalman_filter_type = 'svd',
|
||||
use_cython=False, optimize_max_iters=30, check_gradients=False,
|
||||
predict_X=X_test,
|
||||
gp_kernel=gp_kernel,
|
||||
mean_compare_decimal=-1, var_compare_decimal=-1)
|
||||
|
||||
predict_X=X_test,
|
||||
gp_kernel=gp_kernel,
|
||||
mean_compare_decimal=2, var_compare_decimal=2)
|
||||
|
||||
ss_kernel, gp_kernel = get_new_kernels()
|
||||
self.run_for_model(X_train, Y_train, ss_kernel, kalman_filter_type = 'svd',
|
||||
use_cython=True, optimize_max_iters=30, check_gradients=False,
|
||||
predict_X=X_test,
|
||||
gp_kernel=gp_kernel,
|
||||
mean_compare_decimal=-1, var_compare_decimal=-1)
|
||||
|
||||
predict_X=X_test,
|
||||
gp_kernel=gp_kernel,
|
||||
mean_compare_decimal=2, var_compare_decimal=2)
|
||||
|
||||
if __name__ == "__main__":
|
||||
print("Running state-space inference tests...")
|
||||
unittest.main()
|
||||
|
||||
|
||||
#tt = StateSpaceKernelsTests('test_periodic_kernel')
|
||||
#import pdb; pdb.set_trace()
|
||||
#tt.test_Matern32_kernel()
|
||||
|
|
@ -350,4 +358,4 @@ if __name__ == "__main__":
|
|||
#tt.test_kernel_addition()
|
||||
#tt.test_kernel_multiplication()
|
||||
#tt.test_forecast()
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue