def setUp(self):
ndim = 3
nt = 100
ne = 100
ncomp = 1
problems = OrderedDict()
problems['exp'] = TensorProduct(ndim=ndim, func='exp')
problems['tanh'] = TensorProduct(ndim=ndim, func='tanh')
problems['cos'] = TensorProduct(ndim=ndim, func='cos')
sms = OrderedDict()
sms['LS'] = LS()
sms['QP'] = QP()
sms['KRG'] = KRG(theta0=[1e-2] * ndim)
sms['KPLS'] = KPLS(theta0=[1e-2] * ncomp, n_comp=ncomp)
sms['KPLSK'] = KPLSK(theta0=[1] * ncomp, n_comp=ncomp)
sms['GEKPLS'] = GEKPLS(theta0=[1e-2] * ncomp,
n_comp=ncomp,
delta_x=1e-1)
if compiled_available:
sms['IDW'] = IDW()
sms['RBF'] = RBF()
sms['RMTC'] = RMTC()
sms['RMTB'] = RMTB()
t_errors = {}
t_errors['LS'] = 1.0
t_errors['QP'] = 1.0
t_errors['KRG'] = 1e-5
t_errors['KPLS'] = 1e-5
t_errors['KPLSK'] = 1e-5
t_errors['GEKPLS'] = 1e-5
if compiled_available:
t_errors['IDW'] = 1e-15
t_errors['RBF'] = 1e-2
t_errors['RMTC'] = 1e-1
t_errors['RMTB'] = 1e-1
e_errors = {}
e_errors['LS'] = 1.5
e_errors['QP'] = 1.5
e_errors['KRG'] = 1e-2
e_errors['KPLS'] = 1e-2
e_errors['KPLSK'] = 1e-2
e_errors['GEKPLS'] = 1e-2
if compiled_available:
e_errors['IDW'] = 1e0
e_errors['RBF'] = 1e0
e_errors['RMTC'] = 2e-1
e_errors['RMTB'] = 2e-1
self.nt = nt
self.ne = ne
self.ndim = ndim
self.problems = problems
self.sms = sms
self.t_errors = t_errors
self.e_errors = e_errors
def iDW(xt, yt, xtest, ytest):
########### The IDW model
t = IDW(print_prediction=False)
t.set_training_values(xt, yt)
t.train()
# Prediction of the validation points
y = t.predict_values(xtest)
print('IDW, err: ' + str(compute_rms_error(t, xtest, ytest)))
title = 'IDW'
return t, title, xtest, ytest
def setUp(self):
ndim = 2
self.nt = 50
self.ne = 10
self.problem = Sphere(ndim=ndim)
self.sms = sms = OrderedDict()
if compiled_available:
sms['IDW'] = IDW()
sms['RBF'] = RBF()
sms['RMTB'] = RMTB(regularization_weight=1e-8,
nonlinear_maxiter=100,
solver_tolerance=1e-16)
sms['RMTC'] = RMTC(regularization_weight=1e-8,
nonlinear_maxiter=100,
solver_tolerance=1e-16)
def setUp(self):
ndim = 10
nt = 500
ne = 100
problems = OrderedDict()
problems["sphere"] = Sphere(ndim=ndim)
problems["exp"] = TensorProduct(ndim=ndim, func="exp")
problems["tanh"] = TensorProduct(ndim=ndim, func="tanh")
problems["cos"] = TensorProduct(ndim=ndim, func="cos")
sms = OrderedDict()
sms["LS"] = LS()
sms["QP"] = QP()
sms["KRG"] = KRG(theta0=[4e-1] * ndim)
sms["KPLS"] = KPLS()
if compiled_available:
sms["IDW"] = IDW()
sms["RBF"] = RBF()
t_errors = {}
t_errors["LS"] = 1.0
t_errors["QP"] = 1.0
t_errors["KRG"] = 1e-4
t_errors["IDW"] = 1e-15
t_errors["RBF"] = 1e-2
t_errors["KPLS"] = 1e-3
e_errors = {}
e_errors["LS"] = 2.5
e_errors["QP"] = 2.0
e_errors["KRG"] = 2.0
e_errors["IDW"] = 4
e_errors["RBF"] = 2
e_errors["KPLS"] = 2.5
self.nt = nt
self.ne = ne
self.problems = problems
self.sms = sms
self.t_errors = t_errors
self.e_errors = e_errors
def setUp(self):
ndim = 10
nt = 500
ne = 100
problems = OrderedDict()
problems['sphere'] = Sphere(ndim=ndim)
problems['exp'] = TensorProduct(ndim=ndim, func='exp')
problems['tanh'] = TensorProduct(ndim=ndim, func='tanh')
problems['cos'] = TensorProduct(ndim=ndim, func='cos')
sms = OrderedDict()
sms['LS'] = LS()
sms['QP'] = QP()
sms['KRG'] = KRG(theta0=[4e-1]*ndim)
if compiled_available:
sms['IDW'] = IDW()
sms['RBF'] = RBF()
t_errors = {}
t_errors['LS'] = 1.0
t_errors['QP'] = 1.0
t_errors['KRG'] = 1e-6
t_errors['IDW'] = 1e-15
t_errors['RBF'] = 1e-2
e_errors = {}
e_errors['LS'] = 2.5
e_errors['QP'] = 2.0
e_errors['KRG'] = 2.0
e_errors['IDW'] = 1.5
e_errors['RBF'] = 1.5
self.nt = nt
self.ne = ne
self.problems = problems
self.sms = sms
self.t_errors = t_errors
self.e_errors = e_errors
def train(self, train_method, **kwargs):
"""Trains the surrogate model with given training data.
Parameters
----------
train_method : str
Training method among ``IDW``, ``KPLS``, ``KPLSK``, ``KRG``, ``LS``, ``QP``, ``RBF``, ``RMTB``, ``RMTC``
kwargs : dict
Additional keyword arguments supported by SMT objects
"""
if train_method == 'IDW':
self.trained = IDW(**kwargs)
elif train_method == 'KPLS':
self.trained = KPLS(**kwargs)
elif train_method == 'KPLSK':
self.trained = KPLSK(**kwargs)
elif train_method == 'KRG':
self.trained = KRG(**kwargs)
elif train_method == 'LS':
self.trained = LS(**kwargs)
elif train_method == 'QP':
self.trained = QP(**kwargs)
elif train_method == 'RBF':
self.trained = RBF(**kwargs)
elif train_method == 'RMTB':
self.trained = RMTB(xlimits=self.limits, **kwargs)
elif train_method == 'RMTC':
self.trained = RMTC(xlimits=self.limits, **kwargs)
else:
raise ValueError(
'train_method must be one between IDW, KPLS, KPLSK, KRG, LS, QP, RBF, RMTB, RMTC'
)
self.trained.set_training_values(self.x_samp, self.m_prop)
self.trained.train()
def test_idw(self):
import numpy as np
import matplotlib.pyplot as plt
from smt.surrogate_models import IDW
xt = np.array([0.0, 1.0, 2.0, 3.0, 4.0])
yt = np.array([0.0, 1.0, 1.5, 0.5, 1.0])
sm = IDW(p=2)
sm.set_training_values(xt, yt)
sm.train()
num = 100
x = np.linspace(0.0, 4.0, num)
y = sm.predict_values(x)
plt.plot(xt, yt, "o")
plt.plot(x, y)
plt.xlabel("x")
plt.ylabel("y")
plt.legend(["Training data", "Prediction"])
plt.show()
def test_idw(self):
import numpy as np
import matplotlib.pyplot as plt
from smt.surrogate_models import IDW
xt = np.array([0., 1., 2., 3., 4.])
yt = np.array([0., 1., 1.5, 0.5, 1.0])
sm = IDW(p=2)
sm.set_training_values(xt, yt)
sm.train()
num = 100
x = np.linspace(0., 4., num)
y = sm.predict_values(x)
plt.plot(xt, yt, 'o')
plt.plot(x, y)
plt.xlabel('x')
plt.ylabel('y')
plt.legend(['Training data', 'Prediction'])
plt.show()
def setUp(self):
ndim = 3
nt = 100
ne = 100
ncomp = 1
problems = OrderedDict()
problems["exp"] = TensorProduct(ndim=ndim, func="exp")
problems["tanh"] = TensorProduct(ndim=ndim, func="tanh")
problems["cos"] = TensorProduct(ndim=ndim, func="cos")
sms = OrderedDict()
sms["LS"] = LS()
sms["QP"] = QP()
sms["KRG"] = KRG(theta0=[1e-2] * ndim)
sms["MFK"] = MFK(theta0=[1e-2] * ndim)
sms["KPLS"] = KPLS(theta0=[1e-2] * ncomp, n_comp=ncomp)
sms["KPLSK"] = KPLSK(theta0=[1] * ncomp, n_comp=ncomp)
sms["GEKPLS"] = GEKPLS(theta0=[1e-2] * ncomp,
n_comp=ncomp,
delta_x=1e-1)
sms["GENN"] = genn()
if compiled_available:
sms["IDW"] = IDW()
sms["RBF"] = RBF()
sms["RMTC"] = RMTC()
sms["RMTB"] = RMTB()
t_errors = {}
t_errors["LS"] = 1.0
t_errors["QP"] = 1.0
t_errors["KRG"] = 1e0
t_errors["MFK"] = 1e0
t_errors["KPLS"] = 1e0
t_errors["KPLSK"] = 1e0
t_errors["GEKPLS"] = 1e0
t_errors["GENN"] = 1e0
if compiled_available:
t_errors["IDW"] = 1e0
t_errors["RBF"] = 1e-2
t_errors["RMTC"] = 1e-1
t_errors["RMTB"] = 1e-1
e_errors = {}
e_errors["LS"] = 1.5
e_errors["QP"] = 1.5
e_errors["KRG"] = 1e-2
e_errors["MFK"] = 1e-2
e_errors["KPLS"] = 1e-2
e_errors["KPLSK"] = 1e-2
e_errors["GEKPLS"] = 1e-2
e_errors["GENN"] = 1e-2
if compiled_available:
e_errors["IDW"] = 1e0
e_errors["RBF"] = 1e0
e_errors["RMTC"] = 2e-1
e_errors["RMTB"] = 2e-1
self.nt = nt
self.ne = ne
self.ndim = ndim
self.problems = problems
self.sms = sms
self.t_errors = t_errors
self.e_errors = e_errors
if plot_status:
axarr[k, l].plot(ydtest[:, i], ydtest[:, i], "-.")
axarr[k, l].plot(ydtest[:, i], yd_prediction[:, i], ".")
if l == 2:
l = 0
k += 1
else:
l += 1
if plot_status:
plt.show()
if compiled_available:
########### The IDW model
t = IDW(print_prediction=False)
t.set_training_values(xt, yt[:, 0])
t.train()
# Prediction of the validation points
y = t.predict_values(xtest)
print("IDW, err: " + str(compute_rms_error(t, xtest, ytest)))
if plot_status:
plt.figure()
plt.plot(ytest, ytest, "-.")
plt.plot(ytest, y, ".")
plt.xlabel(r"$y_{true}$")
plt.ylabel(r"$\hat{y}$")
plt.title("Validation of the IDW model")
plt.show()
def train(self, X_train, y_train):
self.smt_model = IDW(p=self.p)
super(IDWModel, self).train(X_train, y_train)
