def model_elm(XX, TT, XX_test, TT_test, model_type):
'''
Builda elm model using hpelm package
Arguments:
XX -- randomized and normalized training X-values, numpy array of shape (# compositions, # molar%)
TT -- randomized and normalized training Y-values, numpy array of shape (Fragility value, 1)
XX_test -- randomized and normalized testing X-values, numpy array of shape (# compositions, # molar%)
TT_test -- randomized and normalized testing Y-values, numpy array of shape (Fragility value, 1)
Returns:
model -- save model in ELM format
'''
# Hyperparameters
k = 5 # Use this if model_type == CV
np.random.seed(10)
# Build hpelm model
# ELM(inputs, outputs, classification='', w=None, batch=1000, accelerator=None, precision='double', norm=None, tprint=5)
model = ELM(20, 1, tprint=5)
# Add neurons
model.add_neurons(7, 'tanh') # Number of neurons with tanh activation
model.add_neurons(7, 'lin') # Number of neurons with linear activation
# if then condition for types of training
if (model_type == 'CV'):
print('-' * 10 + 'Training with Cross-Validation' + '-' * 10)
model.train(XX, TT, 'CV', k=k) # Train the model with cross-validation
elif (model_type == 'LOO'):
print('-' * 10 + 'Training with Leave-One-Out' + '-' * 10)
model.train(XX, TT, 'LOO') # Train the model with Leave-One-Out
else:
print('-' * 10 + 'Training with regression' + '-' * 10)
model.train(XX, TT, 'r') # Train the model with regression
# Train ELM models
TTH = model.predict(XX) # Calculate training error
YY_test = model.predict(XX_test) # Calculate testing error
print('Model Training Error: ', model.error(TT,
TTH)) # Print training error
print('Model Test Error: ', model.error(YY_test,
TT_test)) # Print testing error
print(str(model)) # Print model information
print('-' * 50)
# Call plot function
my_plot(TT_test, YY_test)
return model
def test_MultilabelError_CorrectWithMultipleClasses(self):
T = np.zeros((100, 5))
T[:, 0] = 1
Y = np.zeros((100, 5))
Y[:, 1] = 1
model = ELM(1, 5, classification='ml')
self.assertEqual(0.4, model.error(T, Y))
def test_RegressionError_Works(self):
T = np.array([1, 2, 3])
Y = np.array([1.1, 2.2, 3.3])
err1 = np.mean((T - Y) ** 2)
elm = ELM(1, 1)
e = elm.error(T, Y)
np.testing.assert_allclose(e, err1)
def test_RegressionError_Works(self):
T = np.array([1, 2, 3])
Y = np.array([1.1, 2.2, 3.3])
err1 = np.mean((T - Y)**2)
elm = ELM(1, 1)
e = elm.error(T, Y)
np.testing.assert_allclose(e, err1)
def test_MultilabelError_CorrectWithMultipleClasses(self):
T = np.zeros((100, 5))
T[:, 0] = 1
Y = np.zeros((100, 5))
Y[:, 1] = 1
model = ELM(1, 5, classification='ml')
self.assertEqual(0.4, model.error(T, Y))
def test_MultiLabelClassError_Works(self):
X = np.array([1, 2, 3])
T = np.array([[0, 1], [1, 1], [1, 0]])
Y = np.array([[0.4, 0.6], [0.8, 0.6], [1, 1]])
elm = ELM(1, 2, classification="ml")
elm.add_neurons(1, "lin")
e = elm.error(T, Y)
np.testing.assert_allclose(e, 1.0 / 6)
def test_MultiLabelClassError_Works(self):
X = np.array([1, 2, 3])
T = np.array([[0, 1], [1, 1], [1, 0]])
Y = np.array([[0.4, 0.6], [0.8, 0.6], [1, 1]])
elm = ELM(1, 2, classification="ml")
elm.add_neurons(1, "lin")
e = elm.error(T, Y)
np.testing.assert_allclose(e, 1.0 / 6)
def test_WeightedClassError_Works(self):
T = np.array([[0, 1], [0, 1], [1, 0]])
Y = np.array([[0, 1], [0.4, 0.6], [0, 1]])
# here class 0 is totally incorrect, and class 1 is totally correct
w = (9, 1)
elm = ELM(1, 2, classification="wc", w=w)
elm.add_neurons(1, "lin")
e = elm.error(T, Y)
np.testing.assert_allclose(e, 0.9)
def test_WeightedClassError_Works(self):
T = np.array([[0, 1], [0, 1], [1, 0]])
Y = np.array([[0, 1], [0.4, 0.6], [0, 1]])
# here class 0 is totally incorrect, and class 1 is totally correct
w = (9, 1)
elm = ELM(1, 2, classification="wc", w=w)
elm.add_neurons(1, "lin")
e = elm.error(T, Y)
np.testing.assert_allclose(e, 0.9)
def build_ELM_encoder(xinput, target, num_neurons):
elm = ELM(xinput.shape[1], target.shape[1])
elm.add_neurons(num_neurons, "sigm")
elm.add_neurons(num_neurons, "lin")
#elm.add_neurons(num_neurons, "rbf_l1")
elm.train(xinput, target, "r")
ypred = elm.predict(xinput)
print "mse error", elm.error(ypred, target)
return elm, ypred
def build_ELM_encoder(xinput, target, num_neurons):
elm = ELM(xinput.shape[1], target.shape[1])
elm.add_neurons(num_neurons, "sigm")
elm.add_neurons(num_neurons, "lin")
#elm.add_neurons(num_neurons, "rbf_l1")
elm.train(xinput, target, "r")
ypred = elm.predict(xinput)
print "mse error", elm.error(ypred, target)
return elm, ypred
print "sigmoid with multi class error" elm = ELM(1804, 10) elm.add_neurons(150, "sigm") elm.train(X, Y, "c") Yh = elm.predict(X) print Yh acc = float(np.sum(Y.argmax(1) == Yh.argmax(1))) / Y.shape[0] print "malware dataset training error: %.1f%%" % (100 - acc * 100) print "sigmoid with MSE" elm = hpelm.ELM(1804, 10) elm.add_neurons(150, "sigm") elm.train(X, Y) Y1 = elm.predict(X) err = elm.error(Y1, Y) print err print "rbf_12 with multi class error" elm = hpelm.ELM(1804, 10) elm.add_neurons(150, "rbf_l2") elm.train(X, Y, 'c') Y1 = elm.predict(X) err = elm.error(Y1, Y) print err print "rbf_11 with multi class error" elm = hpelm.ELM(1804, 10) elm.add_neurons(150, "rbf_l1") elm.train(X, Y, 'c') Y1 = elm.predict(X)
elmHiddenProjectionNormed), "Min : ", np.min(elmHiddenProjectionNormed)
# OUTPUT LAYER
elmOutput = ELM(elmHiddenProjectionNormed.shape[1], YY.shape[1])
elmOutput.add_neurons(ninputsig, "tanh")
elmOutput.add_neurons(ninputlin, "lin")
# train and get result
elmOutput.train(elmHiddenProjectionNormed, YYtrain, "c")
# now prediction for trainining
youtput = elmOutput.predict(elmHiddenProjectionNormed)
print "\n Trained output elm", elmOutput
print " Output Projection Max :", np.max(youtput), "Min :", np.min(youtput)
# training results
mse_error = elmOutput.error(youtput, YYtrain)
print "Training mse:", mse_error
p = ytrain.squeeze()
yout = np.argmax(youtput, axis=1)
nhit = sum(yout == p)
ntpos = sum((yout == 1) & (p == 1))
npos = sum((p == 1))
print "\n Training results"
print "Tpos:", ntpos, " / ", npos, "TD:", ntpos / float(npos)
print "Acc: ", nhit / (float)(len(p)), "total", len(p)
# now prediction for testing set
prjinput = elmInput.project(XXtest)
prjinput_normed = mapMinMax(prjinput)
prjhidden = elmHidden1.project(prjinput_normed)
prjhidden_normed = mapMinMax(prjhidden)
def hpElM(data, target, iterNum, isNormal, isRegression, isPCA, n_components,
normalMethod, testSize):
print("ELM is running")
y = target
elmList = []
# neuronsNum = [20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 200]
neuronsNum = [5, 10, 20, 30, 40, 50, 75, 200]
# neuronsNum = [5]
if normalMethod == 1:
sc = preprocessing.Normalizer()
elif normalMethod == 2:
sc = preprocessing.StandardScaler()
elif normalMethod == 3:
sc = preprocessing.MinMaxScaler()
for j in range(iterNum):
errorList = []
X_train, X_test, y_train, y_test = train_test_split(data,
y,
test_size=testSize)
sc.fit(X_train)
X_train_std = sc.transform(X_train)
X_test_std = sc.transform(X_test)
if isPCA:
X_train, X_test = reduceDim.featureExtraction(
X_train_std, X_test_std, n_components)
# print("This is the size of input by using PCA: ", len(X_train[0]))
else:
print("Not use PCA...", )
X_train = X_train_std
X_test = X_test_std
# print("This is : ", X_train)
# print("This is : ", y_train.values)
for neuron in neuronsNum:
elm1 = ELM(len(X_train[1]), y.shape[1])
elm1.add_neurons(neuron, 'sigm')
# elm1.add_neurons(neuron, 'tanh')
# elm1.add_neurons(neuron,'rbf_l2')
elm1.train(X_train, y_train.values, 'CV', 'OP', 'r', k=3)
y_pred_temp = elm1.predict(X_test)
errorPara = elm1.error(y_pred_temp, y_test.values)
errorList.append(errorPara)
print("This is error list: ", errorList)
bestPos = errorList.index(min(errorList))
bestPara = neuronsNum[bestPos]
print("This is the best number of neuron: ", bestPara)
elm = ELM(len(X_train[1]), y.shape[1])
elm.add_neurons(bestPara, 'sigm')
# elm.add_neurons(bestPara,'tanh')
# elm.add_neurons(bestPara,'rbf_l2')
elm.train(X_train, y_train.values, 'CV', 'OP', 'r', k=5)
y_pred_temp = elm.predict(X_test)
# elm.add_neurons(30, "sigm")
# elm.add_neurons(30, "rbf_l2")
# elm.train(X_train, y_train.values, 'CV','OP',k=5)
#
# # svr_rbf = SVR(kernel='rbf', C=1000.0, gamma='auto', max_iter=-1, epsilon=0.1)
# # svr_poly = SVR(kernel='poly', C=1000, degree=3)
# y_pred_temp = elm.predict(X_test)
# print("This is temp y_pred: ", y_pred_temp )
y_pred = []
for t in y_pred_temp:
if t < 0:
y_pred.append(0)
else:
y_pred.append(t)
# y_pred = svr_poly.fit(X_train, y_train).predict(X_test)
if isRegression:
return y_pred
else:
sum_mean = 0
for i in range(len(y_pred)):
if isNormal:
print(
"This is REAL value %.4f, ======ELM=====> PRED value: %.4f"
% (y_test[i], y_pred[i]))
# sum_mean += (y_pred[i] - y_test[i]) ** 2 # if the target is np array
sum_mean += (float("{0:.4f}".format(float(y_pred[i]))) -
y_test[i])**2
else:
print(
"This is REAL value %.4f, ======ELM=====> PRED value: %.4f"
% (y_test.values[i], y_pred[i]))
# sum_mean += (y_pred[i] - y_test.values[i]) ** 2
sum_mean += (float("{0:.4f}".format(float(y_pred[i]))) -
y_test.values[i])**2
sum_erro = np.sqrt(sum_mean / len(y_pred))
elmList.append(sum_erro[0])
print("This is RMSE for ELM: ", sum_erro[0])
print("This is iteration num: ", j + 1)
return elmList
y_all = y_train X_all = X_train X_train_0 = X_train[y_train == 0][:] X_train_1 = X_train[y_train == 1][:] X_train_0_down = np.array(random.sample(X_train_0, X_train_1.shape[0])) X_train = np.vstack([X_train_0_down, X_train_1]) y_train_0 = np.zeros([X_train_0_down.shape[0], 1], dtype=int) y_train_1 = np.ones([X_train_1.shape[0], 1], dtype=int) y_train = np.vstack([y_train_0, y_train_1]) y_train = utils.one_hot(y_train) elm = ELM(X_train.shape[1], y_train.shape[1], classification="c") elm.add_neurons(10, "sigm") elm.train(X_train, y_train, "CV", k=10) Y = elm.predict(X_train) print(elm.error(y_train, Y)) # y_pred = np.argmax(Y, 1) # cm = metrics.confusion_matrix(y_true=y_test, y_pred=y_pred) # print cm # X_hmm = [] # lengths_hmm = [] # frameNumber = 20 # n_components = 5 # n_mix = 6 # for index in range(0, len(y_all)): # if y_all[index] == 0: # continue # else: # cur = np.array(X_all[index - frameNumber:index, :]).tolist() # X_hmm.extend(cur) # lengths_hmm.append(frameNumber)
