def mlp():
"""Trains a multilayer perceptron with 1 hidden layer."""
tf.logging.set_verbosity(FLAGS.verbosity)
print("Preprocessing data...")
tic()
train_raw, x_train, y_train, x_test, y_test, _, _, classes = preprocess_data(FLAGS)
toc()
# Set the output dimension according to the number of classes
FLAGS.output_dim = len(classes)
# Train and evaluate the MLP model.
tic()
run_experiment(x_train, y_train, x_test, y_test,
bag_of_words_MLP_model, 'train_and_evaluate', FLAGS)
toc()
# Associate metadata with the word embedding for TensorBoard Projector
config = projector.ProjectorConfig()
word_embedding = config.embeddings.add()
# The name of the embedding tensor was discovered by using TensorBoard.
word_embedding.tensor_name = 'MLP/input_layer/words_embedding/embedding_weights'
word_embedding.metadata_path = path.join(getcwd(), FLAGS.word_meta_file)
writer = tf.summary.FileWriter(FLAGS.model_dir)
# Writes projector_config.pbtxt
projector.visualize_embeddings(writer, config)
# Create metadata for TensorBoard Projector.
create_metadata(train_raw, classes, FLAGS)
def run_experiments(expts, func, case, roleouts, episodes, in_cloud, minor=1):
experiment = func(case, minor)
profile = experiment.profile
maxSteps = len(profile) # num profile values
na = len(experiment.agents)
ni = roleouts * episodes * maxSteps # no. interactions
expt_action = zeros((expts, na, ni))
expt_reward = zeros((expts, na, ni))
for expt in range(expts):
action, reward, epsilon = \
run_experiment(experiment, roleouts, episodes, in_cloud)
expt_action[expt, :, :] = action
expt_reward[expt, :, :] = reward
experiment = func(case)
expt_action_mean = mean(expt_action, axis=0)
expt_action_std = std(expt_action, axis=0, ddof=1)
expt_reward_mean = mean(expt_reward, axis=0)
expt_reward_std = std(expt_reward, axis=0, ddof=1)
return expt_action_mean, expt_action_std, \
expt_reward_mean, expt_reward_std, epsilon
def run_years(func, case, roleouts, episodes, in_cloud):
experiment = func(case)
dynProfile = profile.reshape((364, maxSteps))
# maxSteps = dynProfile.shape[1]
na = len(experiment.agents)
# ni = roleouts * episodes * maxSteps # no. interactions
# expt_reward = zeros((na, ni))
_, reward, epsilon = \
run_experiment(experiment, roleouts, episodes, in_cloud, dynProfile)
# expt_reward[expt, :, :] = reward
experiment = func(case)
reward_mean = zeros((na, maxSteps))
reward_std = zeros((na, maxSteps))
for s in range(maxSteps):
reward_mean[:, s] = mean(reward[:, s::maxSteps], axis=1)
reward_std[:, s] = std(reward[:, s::maxSteps], axis=1, ddof=1)
return reward, (None, None, reward_mean, reward_std, epsilon)
def perceptron():
"""Train and evaluate the perceptron model."""
tf.logging.set_verbosity(FLAGS.verbosity)
print("Preprocessing data...")
tic()
train_raw, x_train, y_train, x_test, y_test, _, _, classes = preprocess_data(
FLAGS)
toc()
# Set the output dimension according to the number of classes
FLAGS.output_dim = len(classes)
# Train and evaluate the model.
tic()
run_experiment(x_train, y_train, x_test, y_test,
bag_of_words_perceptron_model, 'train_and_evaluate', FLAGS)
toc()
def rnn():
"""Trains a multilayer perceptron with 1 hidden layer. It assumes that the data has already been preprocessed,
e.g. by perceptron.py"""
tf.logging.set_verbosity(FLAGS.verbosity)
print("Preprocessing data...")
tic()
train_raw, x_train, y_train, x_test, y_test, train_lengths, test_lengths, classes \
= preprocess_data(FLAGS, sequence_lengths=True)
toc()
# Set the output dimension according to the number of classes
FLAGS.output_dim = len(classes)
# Train the RNN model.
tic()
run_experiment(x_train, y_train, x_test, y_test, rnn_model,
'train_and_evaluate', FLAGS, train_lengths, test_lengths)
toc()
# Create metadata for TensorBoard Projector.
create_metadata(train_raw, classes, FLAGS)
def run_years(func, case, roleouts, episodes, in_cloud):
experiment = func(case)
dynProfile = profile.reshape((364, maxSteps))
# maxSteps = dynProfile.shape[1]
na = len(experiment.agents)
# ni = roleouts * episodes * maxSteps # no. interactions
# expt_reward = zeros((na, ni))
_, reward, epsilon = \
run_experiment(experiment, roleouts, episodes, in_cloud, dynProfile)
# expt_reward[expt, :, :] = reward
experiment = func(case)
reward_mean = zeros((na, maxSteps))
reward_std = zeros((na, maxSteps))
for s in range(maxSteps):
reward_mean[:, s] = mean(reward[:, s::maxSteps], axis=1)
reward_std[:, s] = std(reward[:, s::maxSteps], axis=1, ddof=1)
return reward, (None, None, reward_mean, reward_std, epsilon)
def run_experiments(expts, func, case, roleouts, episodes, in_cloud, minor=1):
experiment = func(case, minor)
profile = experiment.profile
maxSteps = len(profile) # num profile values
na = len(experiment.agents)
ni = roleouts * episodes * maxSteps # no. interactions
expt_action = zeros((expts, na, ni))
expt_reward = zeros((expts, na, ni))
for expt in range(expts):
action, reward, epsilon = \
run_experiment(experiment, roleouts, episodes, in_cloud)
expt_action[expt, :, :] = action
expt_reward[expt, :, :] = reward
experiment = func(case)
expt_action_mean = mean(expt_action, axis=0)
expt_action_std = std(expt_action, axis=0, ddof=1)
expt_reward_mean = mean(expt_reward, axis=0)
expt_reward_std = std(expt_reward, axis=0, ddof=1)
return expt_action_mean, expt_action_std, \
expt_reward_mean, expt_reward_std, epsilon
def perceptron_example():
"""Perceptron example demonstrating online learning, and also evaluation
separate from training."""
tf.logging.set_verbosity(FLAGS.verbosity)
train_raw, test_raw, classes = get_data(FLAGS.data_dir)
# Set the output dimension according to the number of classes
FLAGS.output_dim = len(classes)
print("\nSplitting the training and test data into two pieces...")
# Seeding necessary for reproducibility.
np.random.seed(FLAGS.np_seed)
# Shuffle data to make the distribution of classes roughly stratified after splitting.
train_raw = shuffle(train_raw)
test_raw = shuffle(test_raw)
train1_raw, train2_raw = np.split(train_raw, 2)
test1_raw, test2_raw = np.split(test_raw, 2)
print("First split:")
x_train1_sentences, y_train1, x_test1_sentences, y_test1 = extract_data(
train1_raw, test1_raw)
print("\nProcessing the vocabulary...")
tic()
x_train1, x_test1, _, _, vocab_processor, n_words = process_vocabulary(
x_train1_sentences, x_test1_sentences, FLAGS, reuse=False)
toc()
# Train the model on the first split.
tic()
run_experiment(x_train1, y_train1, x_test1, y_test1,
bag_of_words_perceptron_model, 'train_and_evaluate', FLAGS)
toc()
# Next we perform incremental training with the 2nd half of the split data.
print("\nSecond split extends the vocabulary.")
x_train2_sentences, y_train2, x_test2_sentences, y_test2 = extract_data(
train2_raw, test2_raw)
# Extend vocab_processor with the newly added training vocabulary, and save the vocabulary processor for later use.
tic()
x_train2, x_test2, _, _, vocab_processor, n_words = process_vocabulary(
x_train2_sentences,
x_test2_sentences,
FLAGS,
reuse=False,
vocabulary_processor=vocab_processor,
extend=True)
toc()
# Train the model on the second split.
tic()
run_experiment(x_train2, y_train2, x_test2, y_test2,
bag_of_words_perceptron_model, 'train_and_evaluate', FLAGS)
toc()
# We may be interested in the model performance on the training data
# (e.g. to evaluate removable bias).
print("\nEvaluation of the model performance on the training data.:")
run_experiment(None, None, x_train1, y_train1,
bag_of_words_perceptron_model, 'evaluate', FLAGS)