def predict(main_config, model_config, model, experiment_name):
model = MODELS[model]
model_dir = str(main_config['DATA']['model_dir'])
vectorizer = DatasetVectorizer(model_dir)
max_doc_len = vectorizer.max_sentence_len
vocabulary_size = vectorizer.vocabulary_size
model = model(max_doc_len, vocabulary_size, main_config, model_config)
with tf.Session() as session:
saver = tf.train.Saver()
last_checkpoint = tf.train.latest_checkpoint('{}/{}'.format(
model_dir, experiment_name))
saver.restore(session, last_checkpoint)
while True:
x1 = input('First sentence:')
x2 = input('Second sentence:')
x1_sen = vectorizer.vectorize(x1)
x2_sen = vectorizer.vectorize(x2)
feed_dict = {
model.x1: x1_sen,
model.x2: x2_sen,
model.is_training: False
}
prediction = session.run([model.temp_sim], feed_dict=feed_dict)
print(prediction)
def predict(main_config, model_config, model):
model_name = '{}_{}'.format(model, main_config['PARAMS']['embedding_size'])
model = MODELS[model_name]
model_dir = str(main_config['DATA']['model_dir'])
vectorizer = DatasetVectorizer(model_dir)
max_doc_len = vectorizer.max_sentence_len
vocabulary_size = vectorizer.vocabulary_size
model = model(max_doc_len, vocabulary_size, main_config, model_config)
with tf.Session() as session:
saver = tf.train.Saver()
last_checkpoint = tf.train.latest_checkpoint('{}/{}/model'.format(
model_dir, model_name))
saver.restore(session, last_checkpoint)
while True:
x = input('Text:')
x_sen = vectorizer.vectorize(x)
feed_dict = {model.x: x_sen}
prediction = session.run([model.temp_sim], feed_dict=feed_dict)
print(prediction)
def train(
main_config,
model_config,
model_name,
experiment_name,
dataset_name,
):
main_cfg = MainConfig(main_config)
model = MODELS[model_name]
dataset = dataset_type.get_dataset(dataset_name)
train_data = dataset.train_set_pairs()
vectorizer = DatasetVectorizer(main_cfg.model_dir,
raw_sentence_pairs=train_data)
dataset_helper = Dataset(vectorizer, dataset, main_cfg.batch_size)
max_sentence_len = vectorizer.max_sentence_len
vocabulary_size = vectorizer.vocabulary_size
train_mini_sen1, train_mini_sen2, train_mini_labels = dataset_helper.pick_train_mini_batch(
)
train_mini_labels = train_mini_labels.reshape(-1, 1)
test_sentence1, test_sentence2 = dataset_helper.test_instances()
test_labels = dataset_helper.test_labels()
test_labels = test_labels.reshape(-1, 1)
num_batches = dataset_helper.num_batches
model = model(
max_sentence_len,
vocabulary_size,
main_config,
model_config,
)
model_saver = ModelSaver(
main_cfg.model_dir,
experiment_name,
main_cfg.checkpoints_to_keep,
)
config = tf.ConfigProto(
allow_soft_placement=True,
log_device_placement=main_cfg.log_device_placement,
)
with tf.Session(config=config) as session:
global_step = 0
init = tf.global_variables_initializer()
session.run(init)
log_saver = LogSaver(
main_cfg.logs_path,
experiment_name,
dataset_name,
session.graph,
)
model_evaluator = ModelEvaluator(model, session)
metrics = {'acc': 0.0}
time_per_epoch = []
log('Training model for {} epochs'.format(main_cfg.num_epochs))
for epoch in tqdm(range(main_cfg.num_epochs), desc='Epochs'):
start_time = time.time()
train_sentence1, train_sentence2 = dataset_helper.train_instances(
shuffle=True)
train_labels = dataset_helper.train_labels()
train_batch_helper = BatchHelper(
train_sentence1,
train_sentence2,
train_labels,
main_cfg.batch_size,
)
# small eval set for measuring dev accuracy
dev_sentence1, dev_sentence2, dev_labels = dataset_helper.dev_instances(
)
dev_labels = dev_labels.reshape(-1, 1)
tqdm_iter = tqdm(range(num_batches),
total=num_batches,
desc="Batches",
leave=False,
postfix=metrics)
for batch in tqdm_iter:
global_step += 1
sentence1_batch, sentence2_batch, labels_batch = train_batch_helper.next(
batch)
feed_dict_train = {
model.x1: sentence1_batch,
model.x2: sentence2_batch,
model.is_training: True,
model.labels: labels_batch,
}
loss, _ = session.run([model.loss, model.opt],
feed_dict=feed_dict_train)
if batch % main_cfg.eval_every == 0:
feed_dict_train = {
model.x1: train_mini_sen1,
model.x2: train_mini_sen2,
model.is_training: False,
model.labels: train_mini_labels,
}
train_accuracy, train_summary = session.run(
[model.accuracy, model.summary_op],
feed_dict=feed_dict_train,
)
log_saver.log_train(train_summary, global_step)
feed_dict_dev = {
model.x1: dev_sentence1,
model.x2: dev_sentence2,
model.is_training: False,
model.labels: dev_labels
}
dev_accuracy, dev_summary = session.run(
[model.accuracy, model.summary_op],
feed_dict=feed_dict_dev,
)
log_saver.log_dev(dev_summary, global_step)
tqdm_iter.set_postfix(
dev_acc='{:.2f}'.format(float(dev_accuracy)),
train_acc='{:.2f}'.format(float(train_accuracy)),
loss='{:.2f}'.format(float(loss)),
epoch=epoch)
if global_step % main_cfg.save_every == 0:
model_saver.save(session, global_step=global_step)
model_evaluator.evaluate_dev(dev_sentence1, dev_sentence2,
dev_labels)
end_time = time.time()
total_time = timer(start_time, end_time)
time_per_epoch.append(total_time)
model_saver.save(session, global_step=global_step)
model_evaluator.evaluate_test(test_sentence1, test_sentence2,
test_labels)
model_evaluator.save_evaluation(
'{}/{}'.format(main_cfg.model_dir, experiment_name),
time_per_epoch[-1], dataset)
def __init__(self, master):
self.frame = master
self.frame.title('Multihead Siamese Nets')
sample1 = StringVar(master, value=SAMPLE_SENTENCE1)
sample2 = StringVar(master, value=SAMPLE_SENTENCE2)
self.first_sentence_entry = Entry(
self.frame,
width=50,
font="Helvetica {}".format(GUI_FONT_SIZE),
textvariable=sample1)
self.second_sentence_entry = Entry(
self.frame,
width=50,
font="Helvetica {}".format(GUI_FONT_SIZE),
textvariable=sample2)
self.predictButton = Button(self.frame,
text='Predict',
font="Helvetica {}".format(GUI_FONT_SIZE),
command=self.predict)
self.clearButton = Button(self.frame,
text='Clear',
command=self.clear,
font="Helvetica {}".format(GUI_FONT_SIZE))
self.resultLabel = Label(self.frame,
text='Result',
font="Helvetica {}".format(GUI_FONT_SIZE))
self.first_sentence_label = Label(
self.frame,
text='Sentence 1',
font="Helvetica {}".format(GUI_FONT_SIZE))
self.second_sentence_label = Label(
self.frame,
text='Sentence 2',
font="Helvetica {}".format(GUI_FONT_SIZE))
self.main_config = init_config()
self.model_dir = str(self.main_config['DATA']['model_dir'])
model_dirs = [os.path.basename(x[0]) for x in os.walk(self.model_dir)]
self.visualize_attentions = IntVar()
self.visualize_attentions_checkbox = Checkbutton(
master,
text="Visualize attention weights",
font="Helvetica {}".format(int(GUI_FONT_SIZE / 2)),
variable=self.visualize_attentions,
onvalue=1,
offvalue=0)
variable = StringVar(master)
variable.set('Choose a model...')
self.model_type = OptionMenu(master,
variable,
*model_dirs,
command=self.load_model)
self.model_type.configure(font=('Helvetica', GUI_FONT_SIZE))
self.first_sentence_entry.grid(row=0, column=1, columnspan=4)
self.first_sentence_label.grid(row=0, column=0, sticky=E)
self.second_sentence_entry.grid(row=1, column=1, columnspan=4)
self.second_sentence_label.grid(row=1, column=0, sticky=E)
self.model_type.grid(row=2, column=1, sticky=W + E, ipady=1)
self.predictButton.grid(row=2, column=2, sticky=W + E, ipady=1)
self.clearButton.grid(row=2, column=3, sticky=W + E, ipady=1)
self.resultLabel.grid(row=2, column=4, sticky=W + E, ipady=1)
self.vectorizer = DatasetVectorizer(self.model_dir)
self.max_doc_len = self.vectorizer.max_sentence_len
self.vocabulary_size = self.vectorizer.vocabulary_size
self.session = tf.Session()
self.model = None
class MultiheadSiameseNetGuiDemo:
def __init__(self, master):
self.frame = master
self.frame.title('Multihead Siamese Nets')
sample1 = StringVar(master, value=SAMPLE_SENTENCE1)
sample2 = StringVar(master, value=SAMPLE_SENTENCE2)
self.first_sentence_entry = Entry(
self.frame,
width=50,
font="Helvetica {}".format(GUI_FONT_SIZE),
textvariable=sample1)
self.second_sentence_entry = Entry(
self.frame,
width=50,
font="Helvetica {}".format(GUI_FONT_SIZE),
textvariable=sample2)
self.predictButton = Button(self.frame,
text='Predict',
font="Helvetica {}".format(GUI_FONT_SIZE),
command=self.predict)
self.clearButton = Button(self.frame,
text='Clear',
command=self.clear,
font="Helvetica {}".format(GUI_FONT_SIZE))
self.resultLabel = Label(self.frame,
text='Result',
font="Helvetica {}".format(GUI_FONT_SIZE))
self.first_sentence_label = Label(
self.frame,
text='Sentence 1',
font="Helvetica {}".format(GUI_FONT_SIZE))
self.second_sentence_label = Label(
self.frame,
text='Sentence 2',
font="Helvetica {}".format(GUI_FONT_SIZE))
self.main_config = init_config()
self.model_dir = str(self.main_config['DATA']['model_dir'])
model_dirs = [os.path.basename(x[0]) for x in os.walk(self.model_dir)]
self.visualize_attentions = IntVar()
self.visualize_attentions_checkbox = Checkbutton(
master,
text="Visualize attention weights",
font="Helvetica {}".format(int(GUI_FONT_SIZE / 2)),
variable=self.visualize_attentions,
onvalue=1,
offvalue=0)
variable = StringVar(master)
variable.set('Choose a model...')
self.model_type = OptionMenu(master,
variable,
*model_dirs,
command=self.load_model)
self.model_type.configure(font=('Helvetica', GUI_FONT_SIZE))
self.first_sentence_entry.grid(row=0, column=1, columnspan=4)
self.first_sentence_label.grid(row=0, column=0, sticky=E)
self.second_sentence_entry.grid(row=1, column=1, columnspan=4)
self.second_sentence_label.grid(row=1, column=0, sticky=E)
self.model_type.grid(row=2, column=1, sticky=W + E, ipady=1)
self.predictButton.grid(row=2, column=2, sticky=W + E, ipady=1)
self.clearButton.grid(row=2, column=3, sticky=W + E, ipady=1)
self.resultLabel.grid(row=2, column=4, sticky=W + E, ipady=1)
self.vectorizer = DatasetVectorizer(self.model_dir)
self.max_doc_len = self.vectorizer.max_sentence_len
self.vocabulary_size = self.vectorizer.vocabulary_size
self.session = tf.Session()
self.model = None
def predict(self):
if self.model:
sentence1 = self.first_sentence_entry.get()
sentence2 = self.second_sentence_entry.get()
x1_sen = self.vectorizer.vectorize(sentence1)
x2_sen = self.vectorizer.vectorize(sentence2)
feed_dict = {
self.model.x1: x1_sen,
self.model.x2: x2_sen,
self.model.is_training: False
}
if self.visualize_attentions.get():
prediction, at1, at2 = np.squeeze(
self.session.run([
self.model.predictions,
self.model.debug_vars['attentions_x1'],
self.model.debug_vars['attentions_x2']
],
feed_dict=feed_dict))
visualization.visualize_attention_weights(at1, sentence1)
visualization.visualize_attention_weights(at2, sentence2)
else:
prediction = np.squeeze(
self.session.run(self.model.predictions,
feed_dict=feed_dict))
prediction = np.round(prediction, 2)
self.resultLabel['text'] = prediction
if prediction < 0.5:
self.resultLabel.configure(foreground="red")
else:
self.resultLabel.configure(foreground="green")
else:
messagebox.showerror("Error",
"Choose a model to make a prediction.")
def clear(self):
self.first_sentence_entry.delete(0, 'end')
self.second_sentence_entry.delete(0, 'end')
self.resultLabel['text'] = ''
def load_model(self, model_name):
if 'multihead' in model_name:
self.visualize_attentions_checkbox.grid(row=2,
column=0,
sticky=W + E,
ipady=1)
else:
self.visualize_attentions_checkbox.grid_forget()
tf.reset_default_graph()
self.session = tf.Session()
logger.info('Loading model: %s', model_name)
model = MODELS[model_name.split('_')[0]]
model_config = init_config(model_name.split('_')[0])
self.model = model(self.max_doc_len, self.vocabulary_size,
self.main_config, model_config)
saver = tf.train.Saver()
last_checkpoint = tf.train.latest_checkpoint('{}/{}'.format(
self.model_dir, model_name))
saver.restore(self.session, last_checkpoint)
logger.info('Loaded model from: %s', last_checkpoint)
def train(main_config, model_config, model_name, dataset_name):
main_cfg = MainConfig(main_config)
model = MODELS[model_name]
dataset = DATASETS[dataset_name]()
model_name = '{}_{}'.format(model_name,
main_config['PARAMS']['embedding_size'])
train_data = dataset.train_set_pairs()
vectorizer = DatasetVectorizer(train_data, main_cfg.model_dir)
dataset_helper = Dataset(vectorizer, dataset, main_cfg.batch_size)
max_sentence_len = vectorizer.max_sentence_len
vocabulary_size = vectorizer.vocabulary_size
train_mini_sen1, train_mini_sen2, train_mini_labels = dataset_helper.pick_train_mini_batch(
)
train_mini_labels = train_mini_labels.reshape(-1, 1)
test_sentence1, test_sentence2 = dataset_helper.test_instances()
test_labels = dataset_helper.test_labels()
test_labels = test_labels.reshape(-1, 1)
num_batches = dataset_helper.num_batches
model = model(max_sentence_len, vocabulary_size, main_config, model_config)
model_saver = ModelSaver(main_cfg.model_dir, model_name,
main_cfg.checkpoints_to_keep)
config = tf.ConfigProto(allow_soft_placement=True,
log_device_placement=main_cfg.log_device_placement)
with tf.Session(config=config) as session:
global_step = 0
init = tf.global_variables_initializer()
session.run(init)
log_saver = LogSaver(main_cfg.logs_path, model_name, dataset_name,
session.graph)
model_evaluator = ModelEvaluator(model, session)
metrics = {'acc': 0.0}
time_per_epoch = []
for epoch in tqdm(range(main_cfg.num_epochs), desc='Epochs'):
start_time = time.time()
train_sentence1, train_sentence2 = dataset_helper.train_instances(
shuffle=True)
train_labels = dataset_helper.train_labels()
train_batch_helper = BatchHelper(train_sentence1, train_sentence2,
train_labels, main_cfg.batch_size)
# small eval set for measuring dev accuracy
dev_sentence1, dev_sentence2, dev_labels = dataset_helper.dev_instances(
)
dev_labels = dev_labels.reshape(-1, 1)
tqdm_iter = tqdm(range(num_batches),
total=num_batches,
desc="Batches",
leave=False,
postfix=metrics)
for batch in tqdm_iter:
global_step += 1
sentence1_batch, sentence2_batch, labels_batch = train_batch_helper.next(
batch)
feed_dict_train = {
model.x1: sentence1_batch,
model.x2: sentence2_batch,
model.is_training: True,
model.labels: labels_batch
}
loss, _ = session.run([model.loss, model.opt],
feed_dict=feed_dict_train)
if batch % main_cfg.eval_every == 0:
feed_dict_train = {
model.x1: train_mini_sen1,
model.x2: train_mini_sen2,
model.is_training: False,
model.labels: train_mini_labels
}
train_accuracy, train_summary = session.run(
[model.accuracy, model.summary_op],
feed_dict=feed_dict_train)
log_saver.log_train(train_summary, global_step)
feed_dict_dev = {
model.x1: dev_sentence1,
model.x2: dev_sentence2,
model.is_training: False,
model.labels: dev_labels
}
dev_accuracy, dev_summary = session.run(
[model.accuracy, model.summary_op],
feed_dict=feed_dict_dev)
log_saver.log_dev(dev_summary, global_step)
tqdm_iter.set_postfix(
dev_acc='{:.2f}'.format(float(dev_accuracy)),
train_acc='{:.2f}'.format(float(train_accuracy)),
loss='{:.2f}'.format(float(loss)),
epoch=epoch)
if global_step % main_cfg.save_every == 0:
model_saver.save(session, global_step=global_step)
model_evaluator.evaluate_dev(dev_sentence1, dev_sentence2,
dev_labels)
end_time = time.time()
total_time = timer(start_time, end_time)
time_per_epoch.append(total_time)
model_saver.save(session, global_step=global_step)
feed_dict_train = {
model.x1: test_sentence1,
model.x2: test_sentence2,
model.is_training: False,
model.labels: test_labels
}
#train_accuracy, train_summary, train_e = session.run([model.accuracy, model.summary_op, model.e],
# feed_dict=feed_dict_train)
train_e = session.run([model.e], feed_dict=feed_dict_train)
plt.clf()
f = plt.figure(figsize=(8, 8.5))
ax = f.add_subplot(1, 1, 1)
i = ax.imshow(train_e[0][0], interpolation='nearest', cmap='gray')
cbaxes = f.add_axes([0.2, 0, 0.6, 0.03])
cbar = f.colorbar(i, cax=cbaxes, orientation='horizontal')
cbar.ax.set_xlabel('Probability', labelpad=2)
f.savefig('attention_maps.pdf', bbox_inches='tight')
f.show()
plt.show()
feed_dict_test = {
model.x1: test_sentence1,
model.x2: test_sentence2,
model.is_training: False,
model.labels: test_labels
}
test_accuracy, test_summary = session.run(
[model.accuracy, model.summary_op], feed_dict=feed_dict_test)
print('tst_acc:%.2f loss:%.2f', test_accuracy, loss)
model_evaluator.evaluate_test(test_sentence1, test_sentence2,
test_labels)
model_evaluator.save_evaluation(
'{}/{}'.format(main_cfg.model_dir, model_name), time_per_epoch[-1],
dataset)
