def main():
################
# LOAD DATASET #
################
dataset = './data/ubiquitous_aug.hkl'
kfd = './data/ubiquitous_kfold.hkl'
print('Loading dataset {}...'.format(dataset))
X, y = hkl.load(open(dataset, 'r'))
X = X.reshape(-1, 4, 1, 400).astype(floatX)
y = y.astype('int32')
print('X shape: {}, y shape: {}'.format(X.shape, y.shape))
kf = hkl.load(open(kfd, 'r'))
kfold = [(train, test) for train, test in kf]
(train, test) = kfold[0]
print('train_set size: {}, test_set size: {}'.format(len(train), len(test)))
# shuffle +/- labels in minibatch
print('shuffling train_set and test_set')
shuffle(train)
shuffle(test)
X_train = X[train]
X_test = X[test]
y_train = y[train]
y_test = y[test]
print('data prepared!')
layers = [
(InputLayer, {'shape': (None, 4, 1, 400)}),
(Conv2DLayer, {'num_filters': 64, 'filter_size': (1, 4)}),
(Conv2DLayer, {'num_filters': 64, 'filter_size': (1, 3)}),
(Conv2DLayer, {'num_filters': 64, 'filter_size': (1, 3)}),
(MaxPool2DLayer, {'pool_size': (1, 2)}),
(Conv2DLayer, {'num_filters': 32, 'filter_size': (1, 2)}),
(Conv2DLayer, {'num_filters': 32, 'filter_size': (1, 2)}),
(Conv2DLayer, {'num_filters': 32, 'filter_size': (1, 2)}),
(MaxPool2DLayer, {'pool_size': (1, 2)}),
(DenseLayer, {'num_units': 64}),
(DropoutLayer, {}),
(DenseLayer, {'num_units': 64}),
(DenseLayer, {'num_units': 2, 'nonlinearity': softmax})]
net = NeuralNet(
layers=layers,
max_epochs=100,
update=adam,
update_learning_rate=1e-4,
train_split=TrainSplit(eval_size=0.1),
on_epoch_finished=[
AdjustVariable(1e-4, target=0, half_life=20)],
verbose=2)
net.fit(X_train, y_train)
plot_loss(net)
def test():
l = 300
dataset = './data/ubiquitous_test.hkl'
print 'Loading dataset {}'.format(dataset)
X_test, y_test = hkl.load(dataset)
X_test = X_test.reshape(-1, 4, 1, l).astype(floatX)
y_test = np.array(y_test, dtype='int32')
print 'X_test shape: {}, y_test shape: {}'.format(X_test.shape, y_test.shape)
test_pos_ids = hkl.load('./data/ubiquitous_test_pos_ids.hkl')
net = pkl.load(open('./models/net.pkl', 'r'))
y_prob = net.predict_proba(X_test)
y_prob = y_prob[:, 1]
f = open('./results/y_score.txt', 'w')
f.write('id:\t predicted probability(ies)')
y_prob_new = []
temp = []
for i, id, lastid in zip(
range(len(test_pos_ids)),
test_pos_ids,
[None] + test_pos_ids[:-1]):
if id != lastid:
y_prob_new.append(temp)
temp = []
f.write('\n%s:\t' % id)
temp.append(y_prob[i])
f.write('%.4f\t' % y_prob[i])
y_prob_new.append(temp)
y_prob_new = [max(item) for item in y_prob_new[1:]]
n_pos = len(y_prob_new)
n_neg = y_test.shape[0] - len(test_pos_ids)
y_prob_new.extend(list(y_prob[-n_neg:]))
y_test = [1] * n_pos + [0] * n_neg
y_pred = np.array(np.array(y_prob_new) > 0.5, dtype='int32')
print 'ROC AUC score is {}'.format(metrics.roc_auc_score(y_test, y_prob_new))
print 'Precision score is {}'.format(metrics.precision_score(y_test, y_pred))
print 'Accuracy score is {}'.format(metrics.accuracy_score(y_test, y_pred))
plot_loss(net)
answ_wl=ANSW_SENT_L, rnn_size=rnn_size, rnn_type='LSTM', pool_size=4,
answ_n=4, dence_l=dence, dropout=0.5,
batch_size=BATCH_SIZE, emb_size=EMB_SIZE, grad_clip=40, init_std=0.1,
num_hops=3, rnn_style=False, nonlin=LN.softmax,
init_W=None, rng=None, art_pool=4,
lr=0.01, mom=0, updates=LU.adagrad, valid_indices=0.2,
permute_answ=True, permute_cont=True)
#----------------------------------------------------------------------train NN
_helpScripts.print_msg('train NN')
net.fit({'l_in_q': train_quest[:quest_n_train], 'l_in_a': train_answ[:quest_n_train],
'l_in_q_pe': float32(q_pe_train), 'l_in_a_pe': float32(a_pe_train),
'l_in_cont': int32(context_train), 'l_in_cont_pe': float32(cont_pe_train)},
train_targets[:quest_n_train], epochs=N_EPOCHS)
plot_loss(net)
#-----------------------------------------------------------------------save NN
net.save_params_to(saveDir + 'params.picle')
# net.save_weights_to(saveDir + 'weights.picle')
print strftime("%Y-%m-%d %H:%M:%S")
print "completed in ", datetime.datetime.now() - startTime
#--------------------------------------------------------------predict for test
q_pe_test = positional_encoding(QUEST_SENT_L, 1, EMB_SIZE, quest_n_test)
a_pe_test = positional_encoding(ANSW_SENT_L, 4, EMB_SIZE, quest_n_test)
cont_pe_test = positional_encoding(MAX_SENT_LENGTH, ARTICLES_QUEST*MAX_SENT_ART, EMB_SIZE, quest_n_test)
pred_answ_test = net.predict({'l_in_q': test_quest[:quest_n_test], 'l_in_a': train_answ[:quest_n_test],
'l_in_q_pe': float32(q_pe_test), 'l_in_a_pe': float32(a_pe_test),
'l_in_cont': int32(context_test), 'l_in_cont_pe': float32(cont_pe_test)})
#------------------------------------------------------------------------submit
def main(model='MLP'):
if (model=='MLP'):
x_train,y_train = load_TrainData()
###########training process #####################
net = build_mlp()
print "Start training:"
net.fit(x_train,y_train)
################## calculate the precision###################
print "======================== accuracy=========================="
x_test = np.array(pd.read_csv('x_test.csv').iloc[:,1:]/255)
#y_test = np.array(pd.read_csv('y_test.csv').iloc[:,1:])
y_label = np.array(pd.read_csv('y_testLabel.csv').iloc[:,1:])
#print x_test
y_pred = net.predict(x_test)
pd.DataFrame(y_pred).to_csv('y_pred_MLP.csv')
y = []
for i in range(y_pred.shape[0]):
y.append(y_pred[i].tolist().index(max(y_pred[i]))+1)
pd.DataFrame(y).to_csv('y_predlabel_MLP.csv')
print classification_report(y_label, y)
##############save the MLP weights to file##########################
net.save_params_to('MLP_weights_file')
elif (model=='CNN'):
x_train,y_train = load_TrainData2D()
#print x_train.shape
print y_train
###########training process #####################
net = buildCNN()
print "Start training:"
net.fit(x_train,y_train)
plot_loss(net)
plot_conv_weights(net.layers_[1], figsize=(4, 4))
plt.show()
################## calculate the precision###################
print "======================== accuracy=========================="
x_test ,y_test = load_TestData2D();
y_label = np.array(pd.read_csv('y_testLabel.csv').iloc[:,1:])
#print x_test
y_pred = net.predict(x_test)
pd.DataFrame(y_pred).to_csv('y_pred_CNN.csv')
y = []
for i in range(y_pred.shape[0]):
y.append(y_pred[i].tolist().index(max(y_pred[i]))+1)
pd.DataFrame(y).to_csv('y_predlabel_CNN.csv')
print classification_report(y_label, y)
#print classification_report(y_pred, y_label)
##############save the MLP weights to file##########################
net.save_params_to('CNN_weights_file')
else:
print 'ERROR: Please select a model #MLP or #CNN !'
def test_plot_loss(self, net_fitted):
from nolearn.lasagne.visualize import plot_loss
plot_loss(net_fitted)
plt.clf()
plt.cla()
def test_plot_loss(self, net_fitted):
from nolearn.lasagne.visualize import plot_loss
plot_loss(net_fitted)
plt.clf()
plt.cla()
#----------------------------------------------------------------------train NN
_helpScripts.print_msg('train NN')
net.fit(
{
'l_in_q': train_quest[:quest_n_train],
'l_in_a': train_answ[:quest_n_train],
'l_in_q_pe': float32(q_pe_train),
'l_in_a_pe': float32(a_pe_train),
'l_in_cont': int32(context_train),
'l_in_cont_pe': float32(cont_pe_train)
},
train_targets[:quest_n_train],
epochs=N_EPOCHS)
plot_loss(net)
#-----------------------------------------------------------------------save NN
net.save_params_to(saveDir + 'params.picle')
# net.save_weights_to(saveDir + 'weights.picle')
print strftime("%Y-%m-%d %H:%M:%S")
print "completed in ", datetime.datetime.now() - startTime
#--------------------------------------------------------------predict for test
q_pe_test = positional_encoding(QUEST_SENT_L, 1, EMB_SIZE, quest_n_test)
a_pe_test = positional_encoding(ANSW_SENT_L, 4, EMB_SIZE, quest_n_test)
cont_pe_test = positional_encoding(MAX_SENT_LENGTH,
ARTICLES_QUEST * MAX_SENT_ART, EMB_SIZE,
quest_n_test)
pred_answ_test = net.predict({
'l_in_q': test_quest[:quest_n_test],
'l_in_a': train_answ[:quest_n_test],
def train(self,
X,
y,
param_file=None,
out_param_file=None,
filter_file=None,
load_params=False,
pretrain=False):
if pretrain:
params = createNoLearnParams(param_file)
print "Parameters", params[1].shape
conv0_W = np.concatenate((params[0], params[0]), axis=1)
conv0_W = np.concatenate((conv0_W, params[0]), axis=1)
conv0_W = conv0_W[:, :7, :, :]
conv0_b = np.concatenate((params[1], params[1]), axis=0)
conv0_b = np.concatenate((conv0_b, params[1]), axis=0)
conv0_b = conv0_b[:96]
conv1_W = np.concatenate((params[2], params[2]), axis=1)
conv1_W = np.concatenate((conv1_W, params[2]), axis=1)
conv1_W = conv1_W[:, :96, :, :]
conv1_b = np.concatenate((params[3], params[3]), axis=0)
conv1_b = np.concatenate((conv1_b, params[3]), axis=0)
conv1_b = conv1_b[:256]
conv2_W = np.concatenate((params[4], params[4]), axis=1)
conv2_W = np.concatenate((conv2_W, params[4]), axis=1)
conv2_W = conv2_W[:, :256, :, :]
conv2_b = np.concatenate((params[5], params[5]), axis=0)
conv2_b = np.concatenate((conv2_b, params[5]), axis=0)
conv2_b = conv2_b[:512]
conv3_W = np.concatenate((params[6], params[6]), axis=1)
conv3_W = np.concatenate((conv3_W, params[6]), axis=1)
conv3_W = conv3_W[:, :512, :, :]
conv3_b = np.concatenate((params[7], params[7]), axis=0)
conv3_b = np.concatenate((conv3_b, params[7]), axis=0)
conv3_b = conv3_b[:512]
conv4_W = np.concatenate((params[8], params[8]), axis=1)
conv4_W = np.concatenate((conv4_W, params[8]), axis=1)
conv4_W = conv4_W[:, :512, :, :]
conv4_b = np.concatenate((params[9], params[9]), axis=0)
conv4_b = np.concatenate((conv4_b, params[9]), axis=0)
conv4_b = conv4_b[:512]
dense0_W = np.concatenate((params[10], params[10]), axis=1)
dense0_W = np.concatenate((dense0_W, params[10]), axis=1)
dense0_W = dense0_W[:2560, :4096]
dense0_b = np.concatenate((params[11], params[11]), axis=0)
dense0_b = np.concatenate((dense0_b, params[11]), axis=0)
dense0_b = dense0_b[:4096]
dense1_W = np.concatenate((params[12], params[12]), axis=1)
dense1_W = np.concatenate((dense1_W, params[12]), axis=1)
dense1_W = dense1_W[:4096, :4096]
dense1_b = np.concatenate((params[13], params[13]), axis=0)
dense1_b = np.concatenate((dense1_b, params[13]), axis=0)
dense1_b = dense1_b[:4096]
#http://arxiv.org/pdf/1405.3531v4.pdf
self.net = NeuralNet(
layers=self.layers,
conv0_W=np.array(conv0_W),
conv0_b=np.array(conv0_b),
conv1_W=np.array(conv1_W),
conv1_b=np.array(conv1_b),
conv2_W=np.array(conv2_W),
conv2_b=np.array(conv2_b),
conv3_W=np.array(conv3_W),
conv3_b=np.array(conv3_b),
conv4_W=np.array(conv4_W),
conv4_b=np.array(conv4_b),
dense0_W=np.array(dense0_W),
dense0_b=np.array(dense0_b),
dense1_W=np.array(dense1_W),
dense1_b=np.array(dense1_b),
update_learning_rate=0.015,
update=L.updates.nesterov_momentum,
update_momentum=0.9,
#update=L.updates.sgd,
regression=True,
verbose=1,
eval_size=0.15,
objective_loss_function=L.objectives.binary_crossentropy,
max_epochs=200)
if load_params:
print "Loading parameters from ", param_file
self.net.load_params_from(param_file)
print "TRAINING!"
print "input shape: ", X.shape
print "output shape: ", y.shape
print "Example X", X[0]
print "Example Y", y[0]
#print self.net.get_params()
self.net.fit(X, y)
print(self.net.score(X, y))
print "Saving network parameters to ", out_param_file, "..."
file = open(out_param_file, 'w+')
file.close()
self.net.save_weights_to(out_param_file)
print "Saving filters to ", filter_file
self.write_filters_to_file(filter_file)
plt = visualize.plot_loss(self.net)
plt.show()
plt.savefig(DIR_PROJ + 'loss.png')
plt.clf()
plt.cla()
print "Sample predictions"
for i in range(10):
pred = self.net.predict(np.array([X[i]]))
print "---------------------------------"
print i
print "prediction", pred
print y[i]
update = adam, # For 'adam', a small learning rate is best
update_learning_rate = 0.0002,
objective_l2 = 0.0025, # L2 regularization
train_split = TrainSplit(eval_size = 0.25),
verbose = 1
)
net0.fit(X_train, y_train)
# visualization
from nolearn.lasagne.visualize import draw_to_notebook, plot_loss
from nolearn.lasagne.visualize import plot_conv_weights, plot_conv_activity
from nolearn.lasagne.visualize import plot_occlusion, plot_saliency
draw_to_notebook(net0)
plot_loss(net0)
#plot helps determine if we are overfitting:
#If the train loss is much lower than the validation loss,
#we should probably do something to regularize the net.
# visualize layer weights
plot_conv_weights(net0.layers_[1], figsize = (4,4))
#If the weights just look like noise, we might have to do something
#(e.g. use more filters so that each can specialize better).
# visualize layers' activities
x = X_train[0:1] # an image in the bc01 format (so use X[0:1] instead of just X[0]).
plot_conv_activity(net0.layers_[1], x)
plot_occlusion(net0, X_train[:5], y_train[:5])
plot_saliency(net0, X_train[:5])
#optimization parameters:
update=nesterov_momentum,
update_learning_rate=0.05,
update_momentum=0.9,
regression=True,
max_epochs=50,
verbose=1,
batch_iterator_train=BatchIterator(batch_size=25),
on_epoch_finished=[
EarlyStopping(patience=20),
],
train_split=TrainSplit(eval_size=0.5))
net2.fit(train_x, train_y)
plot_loss(net2)
plt.savefig("/home/sandeep/Desktop/Major/Results/plotloss.png")
plot_conv_weights(net2.layers_[1], figsize=(4, 4))
plt.savefig("/home/sandeep/Desktop/Major/Results/convweights.png")
#layer_info = PrintLayerInfo()
#layer_info(net2)
import cPickle as pickle
with open('/home/sandeep/Desktop/Major/Results/net2.pickle', 'wb') as f:
pickle.dump(net2, f, -1)
y_pred2 = net2.predict(test_x)
print "The accuracy of this network is: %0.2f" % (abs(y_pred2 - test_y)).mean()
do_test("/home/sandeep/Desktop/Major/train",
def cae_eval(self):
"""Draw evaluation lines
<TODO>
"""
from nolearn.lasagne.visualize import plot_loss
plot_loss(self.cae)
def test_visualize_functions_with_cnn(mnist):
# this test simply tests that no exception is raised when using
# the plotting functions
from nolearn.lasagne import NeuralNet
from nolearn.lasagne.visualize import plot_conv_activity
from nolearn.lasagne.visualize import plot_conv_weights
from nolearn.lasagne.visualize import plot_loss
from nolearn.lasagne.visualize import plot_occlusion
X, y = mnist
X_train, y_train = X[:100].reshape(-1, 1, 28, 28), y[:100]
X_train = X_train.reshape(-1, 1, 28, 28)
num_epochs = 3
nn = NeuralNet(
layers=[
('input', InputLayer),
('conv1', Conv2DLayer),
('conv2', Conv2DLayer),
('pool2', MaxPool2DLayer),
('conv3', Conv2DLayer),
('conv4', Conv2DLayer),
('pool4', MaxPool2DLayer),
('hidden1', DenseLayer),
('output', DenseLayer),
],
input_shape=(None, 1, 28, 28),
output_num_units=10,
output_nonlinearity=softmax,
more_params=dict(
conv1_filter_size=(5, 5),
conv1_num_filters=16,
conv2_filter_size=(3, 3),
conv2_num_filters=16,
pool2_ds=(3, 3),
conv3_filter_size=(3, 3),
conv3_num_filters=16,
conv4_filter_size=(3, 3),
conv4_num_filters=16,
pool4_ds=(2, 2),
hidden1_num_units=16,
),
update=nesterov_momentum,
update_learning_rate=0.01,
update_momentum=0.9,
max_epochs=num_epochs,
)
nn.fit(X_train, y_train)
plot_loss(nn)
plot_conv_weights(nn.layers_['conv1'])
plot_conv_weights(nn.layers_['conv2'], figsize=(1, 2))
plot_conv_activity(nn.layers_['conv3'], X_train[:1])
plot_conv_activity(nn.layers_['conv4'], X_train[10:11], figsize=(3, 4))
plot_occlusion(nn, X_train[:1], y_train[:1])
plot_occlusion(nn,
X_train[2:4],
y_train[2:4],
square_length=3,
figsize=(5, 5))
# clear figures from memory
plt.clf()
plt.cla()
acc_net = accuracy_score(Y_test,preds_net)
precision_net = precision_score(Y_test,preds_net)
recall_net = recall_score(Y_test,preds_net)
print("----------------------------------------------------------------")
print("NET: Matthews Correlation Coefficient: \t" + str(mcc_net))
print("NET: Accuracy: \t\t\t\t" + str(acc_net))
print("NET: Precision: \t\t\t\t" + str(precision_net))
print("NET: Recall: \t\t\t\t" + str(recall_net))
netFile = logPath + "/net"
net.save_params_to(netFile)
plt = plot_loss(net)
plt.savefig(logPath + "/valid_train_loss.png")
numbers_net = [mcc_net,acc_net,precision_net,recall_net]
numbers_file_net = open(logPath + "/net_numbers.csv",'wb')
wr_net = csv.writer(numbers_file_net)
wr_net.writerow(numbers_net)
numbers_file_net.close()
f = open(logPath+'/net_info.txt','w')
f.write("Net layers:\n")
f.write(str(net.layers))
f.write('\n')
f.write("Seed: ")
f.write(str(args.seed))
f.close()
fold+=1
def load_cnn(path, cnn_type=None):
# load cnn
with open(path, 'rb') as f:
cnn = pickle.load(f)
# make sure we have the correct test batch iterator
# cnn.batch_iterator_test = MyTestBatchIterator(cnn.batch_iterator_train.batch_size)
if cnn_type == None:
cnn_type = os.path.basename(os.path.dirname(path))
input_names = []
input_values = []
if cnn_type.startswith('RGBA'):
# this is a rgba network
if cnn_type.find('large') != -1:
# large border
X_test, y_test = mlp.Patch.load_rgba_test_only('cylinder1_rgba', border_prefix = 'larger_border')
else:
# small border
X_test, y_test = mlp.Patch.load_rgba_test_only('cylinder1_rgba')
test_inputs = X_test
input_names.append('RGBA')
elif cnn_type.startswith('RGB'):
# this is a RGB net
X_test, y_test = mlp.Patch.load_rgb_test_only('cylinder2_rgb')
# test_inputs = X_test[:,:-1,:,:]
test_inputs = X_test
input_names.append('RGB')
else:
# load patches
X_train, y_train, X_test, y_test = mlp.Patch.load('cylinder2')
test_inputs = collections.OrderedDict()
for l in cnn.layers:
layer_name, layer_type = l
if layer_type == lasagne.layers.input.InputLayer:
input_name = layer_name.split('_')[0]
if input_name == 'binary':
input_name = 'merged_array'
if input_name == 'border':
input_name = 'border_overlap'
if path.find('larger_border_overlap') != -1:
input_name = 'larger_border_overlap'
input_names.append(layer_name)
input_values.append(input_name)
test_inputs[layer_name] = X_test[input_name]
print 'Using test set:', input_values
# calc F1
test_prediction = cnn.predict(test_inputs)
test_prediction_prob = cnn.predict_proba(test_inputs)
print
print 'Precision/Recall:'
print classification_report(y_test, test_prediction)
# calc test accuracy
test_acc = cnn.score(test_inputs, y_test)
acc_score = accuracy_score(y_test, test_prediction)
print 'Test Accuracy:', test_acc
print 'Accuracy Score:', acc_score
# ROC/AUC
fpr, tpr, _ = roc_curve(y_test, test_prediction_prob[:,1])
roc_auc = auc(fpr, tpr)
# attach patch selection
cnn.input_names = input_names
cnn.input_values = input_values
cnn.uuid = cnn_type#os.path.basename(os.path.dirname(path))
# plot loss
output_folder = '/home/d/netstats/'+cnn.uuid+'/'
if not os.path.exists(output_folder):
os.makedirs(output_folder)
font = {'family' : 'normal',
# 'weight' : 'bold',
'size' : 26}
plt.rc('font', **font)
plt.figure(figsize=(22,22))
loss_plot = plot_loss(cnn)
loss_plot.savefig(output_folder+'/loss.pdf')
data = {}
data['CNN'] = (fpr, tpr, roc_auc)
mlp.Legacy.plot_roc(data, output_folder+'/cnn_roc.pdf')
return cnn
max_epochs=20,
update=nesterov_momentum,
update_learning_rate=0.01,
update_momentum=0.975,
regression=True,
verbose=1
)
# ae.initialize()
# PrintLayerInfo()(ae)
ae.fit(X, X_out)
from nolearn.lasagne.visualize import plot_loss
plot_loss(ae)
# ae.save_params_to('mnist/conv_ae.np')
pickle.dump(ae, open('mnist/conv_ae.pkl','w'))
# ae = pickle.load(open('mnist/conv_ae.pkl','r'))
# ae.layers
X_pred = ae.predict(X).reshape(-1, 28, 28)
X_pred = np.rint(256. * X_pred).astype(int)
X_pred = np.clip(X_pred, a_min = 0, a_max = 255)
X_pred = X_pred.astype('uint8')
print X_pred.shape , X.shape
### show random inputs / outputs side by side
def get_picture_array(X, rescale=4):
def test_visualize_functions_with_cnn(mnist):
# this test simply tests that no exception is raised when using
# the plotting functions
from nolearn.lasagne import NeuralNet
from nolearn.lasagne.visualize import plot_conv_activity
from nolearn.lasagne.visualize import plot_conv_weights
from nolearn.lasagne.visualize import plot_loss
from nolearn.lasagne.visualize import plot_occlusion
X, y = mnist
X_train, y_train = X[:100].reshape(-1, 1, 28, 28), y[:100]
X_train = X_train.reshape(-1, 1, 28, 28)
num_epochs = 3
nn = NeuralNet(
layers=[
('input', InputLayer),
('conv1', Conv2DLayer),
('conv2', Conv2DLayer),
('pool2', MaxPool2DLayer),
('conv3', Conv2DLayer),
('conv4', Conv2DLayer),
('pool4', MaxPool2DLayer),
('hidden1', DenseLayer),
('output', DenseLayer),
],
input_shape=(None, 1, 28, 28),
output_num_units=10,
output_nonlinearity=softmax,
more_params=dict(
conv1_filter_size=(5, 5), conv1_num_filters=16,
conv2_filter_size=(3, 3), conv2_num_filters=16,
pool2_ds=(3, 3),
conv3_filter_size=(3, 3), conv3_num_filters=16,
conv4_filter_size=(3, 3), conv4_num_filters=16,
pool4_ds=(2, 2),
hidden1_num_units=16,
),
update=nesterov_momentum,
update_learning_rate=0.01,
update_momentum=0.9,
max_epochs=num_epochs,
)
nn.fit(X_train, y_train)
plot_loss(nn)
plot_conv_weights(nn.layers_['conv1'])
plot_conv_weights(nn.layers_['conv2'], figsize=(1, 2))
plot_conv_activity(nn.layers_['conv3'], X_train[:1])
plot_conv_activity(nn.layers_['conv4'], X_train[10:11], figsize=(3, 4))
plot_occlusion(nn, X_train[:1], y_train[:1])
plot_occlusion(nn, X_train[2:4], y_train[2:4], square_length=3,
figsize=(5, 5))
# clear figures from memory
plt.clf()
plt.cla()
