def extract_features(exp_dir,
trial_id,
test_name,
save_name):
'''Saves features after training. '''
print('#################### Feature Extraction {} ####################'.format(trial_id))
# Get trial folder
trial_dir = os.path.join(exp_dir, trial_id)
assert os.path.isfile(os.path.join(trial_dir, 'summary.json'))
# Load config
with open(os.path.join(exp_dir, 'configs', '{}.json'.format(trial_id)), 'r') as f:
config = json.load(f)
data_config = config['data_config']
model_config = config['model_config']
# No need to load training data for feature extraction.
data_config["label_train_set"] = False
# Load dataset
if test_name is not None:
data_config["test_name"] = test_name
dataset = load_dataset(data_config)
dataset.eval()
# Load best model
state_dict = torch.load(os.path.join(
trial_dir, 'best.pth'), map_location=lambda storage, loc: storage)
model_class = get_model_class(model_config['name'].lower())
model_config['label_functions'] = dataset.active_label_functions
model_config['augmentations'] = dataset.active_augmentations
model = model_class(model_config)
model.load_state_dict(state_dict)
num_samples = 128
loader = DataLoader(dataset, batch_size=num_samples, shuffle=False)
(states, actions, labels_dict) = next(iter(loader))
states = states.transpose(0, 1)
actions = actions.transpose(0, 1)
save_array = np.array([])
for batch_idx, (states, actions, labels_dict) in enumerate(loader):
states = states
actions = actions
labels_dict = {key: value for key, value in labels_dict.items()}
states = states.transpose(0, 1)
actions = actions.transpose(0, 1)
with torch.no_grad():
if len(dataset.active_label_functions) > 0:
label_list = []
for lf_idx, lf_name in enumerate(labels_dict):
label_list.append(labels_dict[lf_name])
label_input = torch.cat(label_list, -1)
encodings_mean, _ = model.encode_mean(states[:-1], actions,
labels=label_input)
else:
encodings_mean, _ = model.encode_mean(states[:-1], actions)
if save_array.shape[0] == 0:
save_array = encodings_mean
else:
save_array = np.concatenate([save_array, encodings_mean], axis=0)
np.savez(os.path.join(trial_dir, save_name), save_array)
print("Saved Features: " + os.path.join(trial_dir, save_name))
def visualize_samples_ctvae(exp_dir, trial_id, num_samples, num_values, repeat_index, burn_in, temperature):
print('#################### Trial {} ####################'.format(trial_id))
# Get trial folder
trial_dir = os.path.join(exp_dir, trial_id)
assert os.path.isfile(os.path.join(trial_dir, 'summary.json'))
# Load config
with open(os.path.join(exp_dir, 'configs', '{}.json'.format(trial_id)), 'r') as f:
config = json.load(f)
data_config = config['data_config']
model_config = config['model_config']
# Load dataset
dataset = load_dataset(data_config)
dataset.eval()
print(type(dataset))
# Load best model
state_dict = torch.load(os.path.join(trial_dir, 'best.pth'), map_location=lambda storage, loc: storage)
model_class = get_model_class(model_config['name'].lower())
assert model_class.requires_labels
model_config['label_functions'] = dataset.active_label_functions
model = model_class(model_config)
model.filter_and_load_state_dict(state_dict)
# Load environment
env = load_environment(data_config['name']) # TODO make env_config?
# TODO for now, assume just one active label function
# assert len(dataset.active_label_functions) == 1
# for lf in dataset.active_label_functions:
loader = DataLoader(dataset, batch_size=num_samples, shuffle=False)
(states, actions, labels_dict) = next(iter(loader))
if repeat_index >= 0:
states_single = states[repeat_index].unsqueeze(0)
states = states_single.repeat(num_samples, 1, 1)
actions_single = actions[repeat_index].unsqueeze(0)
actions = actions_single.repeat(num_samples, 1, 1)
states = states.transpose(0, 1)
actions = actions.transpose(0, 1)
y = labels_dict["copulation"]
with torch.no_grad():
env.reset(init_state=states[0].clone())
model.reset_policy(labels=y, temperature=args.temperature)
rollout_states, rollout_actions = generate_rollout(env, model, burn_in=args.burn_in,
burn_in_actions=actions, horizon=actions.size(0))
rollout_states = rollout_states.transpose(0, 1)
rollout_actions = rollout_actions.transpose(0, 1)
dataset.save(
rollout_states,
rollout_actions,
labels=y,
lf_list=dataset.active_label_functions,
burn_in=burn_in,
save_path=os.path.join(trial_dir, 'results', "copulating"),
save_name='repeat_{:03d}_{}'.format(repeat_index, "copulating") if repeat_index >= 0 else '',
single_plot=(repeat_index >= 0))
def start_training(save_path, data_config, model_config, train_config, device, test_code=False):
summary = { 'training' : [] }
logger = []
# Sample and fix a random seed if not set in train_config
if 'seed' not in train_config:
train_config['seed'] = random.randint(0, 9999)
seed = train_config['seed']
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
np.random.seed(seed)
random.seed(seed)
torch.backends.cudnn.deterministic = True
# Initialize dataset
dataset = load_dataset(data_config)
summary['dataset'] = dataset.summary
# Add state and action dims to model config
model_config['state_dim'] = dataset.state_dim
model_config['action_dim'] = dataset.action_dim
# Get model class
model_class = get_model_class(model_config['name'].lower())
# Check if model needs labels as input
#if model_class.requires_labels:
model_config['label_dim'] = dataset.label_dim
model_config['label_functions'] = dataset.active_label_functions
#if model_class.requires_augmentations:
model_config['augmentations'] = dataset.active_augmentations
# Initialize model
model = model_class(model_config).to(device)
summary['model'] = model_config
summary['model']['num_parameters'] = model.num_parameters
# Initialize dataloaders
kwargs = {'num_workers': 8, 'pin_memory': False, 'worker_init_fn': np.random.seed(seed)} if device is not 'cpu' else {}
data_loader = DataLoader(dataset, batch_size=train_config['batch_size'], shuffle=True, **kwargs)
# Initialize with pretrained model (if specified)
if 'pretrained_model' in train_config:
print('LOADING pretrained model: {}'.format(train_config['pretrained_model']))
# model_path = os.path.join(os.path.dirname(save_path), train_config['pretrained_model'])
model_path = os.path.join(os.path.dirname(os.path.dirname(save_path)), train_config['pretrained_model'])
state_dict = torch.load(model_path)
model.load_state_dict(state_dict)
torch.save(model.state_dict(), os.path.join(save_path, 'best.pth')) # copy over best model
# Start training
if isinstance(train_config['num_epochs'], int):
train_config['num_epochs'] = [train_config['num_epochs']]
start_time = time.time()
epochs_done = 0
for num_epochs in train_config['num_epochs']:
model.prepare_stage(train_config)
stage_start_time = time.time()
print('##### STAGE {} #####'.format(model.stage))
best_test_log = {}
best_test_log_times = []
for epoch in range(num_epochs):
epochs_done += 1
print('--- EPOCH [{}/{}] ---'.format(epochs_done, sum(train_config['num_epochs'])))
epoch_start_time = time.time()
train_log = run_epoch(data_loader, model, device, train=True, early_break=test_code)
test_log = run_epoch(data_loader, model, device, train=False, early_break=test_code)
epoch_time = time.time() - epoch_start_time
print('{:.3f} seconds'.format(epoch_time))
logger.append({
'epoch' : epochs_done,
'stage' : model.stage,
'train' : train_log,
'test' : test_log,
'time' : epoch_time
})
# Save model checkpoints
if epochs_done % train_config['checkpoint_freq'] == 0:
torch.save(model.state_dict(), os.path.join(save_path, 'checkpoints', 'checkpoint_{}.pth'.format(epochs_done)))
print('Checkpoint saved')
# Save model with best test loss during stage
if epoch == 0 or sum(test_log['losses'].values()) < sum(best_test_log['losses'].values()):
best_test_log = test_log
best_test_log_times.append(epochs_done)
torch.save(model.state_dict(), os.path.join(save_path, 'best.pth'))
print('Best model saved')
# Save training statistics by stage
summary['training'].append({
'stage' : model.stage,
'num_epochs' : num_epochs,
'stage_time' : round(time.time()-stage_start_time, 3),
'best_test_log_times' : best_test_log_times,
'best_test_log' : best_test_log
})
# Load best model for next stage
if model.stage < len(train_config['num_epochs']):
best_state = torch.load(os.path.join(save_path, 'best.pth'))
model.load_state_dict(best_state)
torch.save(model.state_dict(), os.path.join(save_path, 'best_stage_{}.pth'.format(model.stage)))
# Save final model
torch.save(model.state_dict(), os.path.join(save_path,'final.pth'))
print('Final model saved')
# Save total time
summary['total_time'] = round(time.time()-start_time, 3)
model_config.pop('label_functions')
model_config.pop('augmentations')
return summary, logger, data_config, model_config, train_config
def visualize_samples_ctvae(exp_dir,
trial_id,
num_samples,
num_values,
repeat_index,
burn_in,
temperature,
bad_experiment=True):
print(
'#################### Trial {} ####################'.format(trial_id))
# Get trial folder
trial_dir = os.path.join(exp_dir, trial_id)
assert os.path.isfile(os.path.join(trial_dir, 'summary.json'))
# Load config
with open(os.path.join(exp_dir, 'configs', '{}.json'.format(trial_id)),
'r') as f:
config = json.load(f)
data_config = config['data_config']
model_config = config['model_config']
# Load dataset
dataset = load_dataset(data_config)
dataset.eval()
# Load best model
state_dict = torch.load(os.path.join(trial_dir, 'best.pth'),
map_location=lambda storage, loc: storage)
model_class = get_model_class(model_config['name'].lower())
assert model_class.requires_labels
model_config['label_functions'] = dataset.active_label_functions
model = model_class(model_config)
model.filter_and_load_state_dict(state_dict)
# Load environment
env = load_environment(data_config['name']) # TODO make env_config?
loader = DataLoader(dataset, batch_size=num_samples, shuffle=False)
(states, actions, labels_dict) = next(iter(loader))
if repeat_index >= 0:
states_single = states[repeat_index].unsqueeze(0)
states = states_single.repeat(num_samples, 1, 1)
actions_single = actions[repeat_index].unsqueeze(0)
actions = actions_single.repeat(num_samples, 1, 1)
states = states.transpose(0, 1)
actions = actions.transpose(0, 1)
losses = []
y = labels_dict["copulation"]
with torch.no_grad():
for k in range(3):
env.reset(init_state=states[0].clone())
model.reset_policy(labels=y, temperature=args.temperature)
rollout_states, rollout_actions = generate_rollout(
env,
model,
model2=model,
burn_in=args.burn_in,
burn_in_actions=actions,
horizon=actions.size(0))
rollout_states = rollout_states.transpose(0, 1)
rollout_actions = rollout_actions.transpose(0, 1)
# if we have a single agent setting, we generate two rollouts and vert stack them
if bad_experiment:
rollout_states_2, rollout_actions_2 = generate_rollout(
env,
model,
burn_in=args.burn_in,
burn_in_actions=actions,
horizon=actions.size(0))
rollout_states_2 = rollout_states_2.transpose(0, 1)
rollout_actions_2 = rollout_actions_2.transpose(0, 1)
stack_tensor_states = torch.cat(
(rollout_states, rollout_states_2), dim=2)
stack_tensor_action = torch.cat(
(rollout_actions, rollout_actions_2), dim=2)
rollout_states_3, rollout_actions_3 = generate_rollout(
env,
model,
burn_in=args.burn_in,
burn_in_actions=actions,
horizon=actions.size(0))
rollout_states_3 = rollout_states_3.transpose(0, 1)
rollout_actions_3 = rollout_actions_3.transpose(0, 1)
rollout_states_4, rollout_actions_4 = generate_rollout(
env,
model,
burn_in=args.burn_in,
burn_in_actions=actions,
horizon=actions.size(0))
rollout_states_4 = rollout_states_4.transpose(0, 1)
rollout_actions_4 = rollout_actions_4.transpose(0, 1)
stack_tensor_states_2 = torch.cat(
(rollout_states_3, rollout_states_4), dim=2)
stack_tensor_action_2 = torch.cat(
(rollout_actions_3, rollout_actions_4), dim=2)
final_states_tensor = torch.cat(
(stack_tensor_states, stack_tensor_states_2), dim=1)
final_actions_tensor = torch.cat(
(stack_tensor_action, stack_tensor_action_2), dim=1)
losses.append(
get_classification_loss(final_states_tensor,
final_actions_tensor))
else:
losses.append(
get_classification_loss(rollout_states, rollout_actions))
print(np.mean(losses))
def compute_stylecon_ctvae(exp_dir, trial_id, args):
print('#################### Trial {} ####################'.format(trial_id))
# Get trial folder
trial_dir = os.path.join(exp_dir, trial_id)
assert os.path.isfile(os.path.join(trial_dir, 'summary.json'))
# Load config
with open(os.path.join(exp_dir, 'configs', '{}.json'.format(trial_id)), 'r') as f:
config = json.load(f)
data_config = config['data_config']
model_config = config['model_config']
# Load dataset
dataset = load_dataset(data_config)
dataset.eval()
# Load best model
state_dict = torch.load(os.path.join(trial_dir, 'best.pth'), map_location=lambda storage, loc: storage)
model_class = get_model_class(model_config['name'].lower())
assert model_class.requires_labels
model_config['label_functions'] = dataset.active_label_functions
model = model_class(model_config)
model.filter_and_load_state_dict(state_dict)
# Load environment
env = load_environment(data_config['name']) # TODO make env_config?
# Load batch
loader = DataLoader(dataset, batch_size=args.num_samples, shuffle=True)
(states, actions, labels_dict) = next(iter(loader))
states = states.transpose(0,1)
actions = actions.transpose(0,1)
# Randomly permute labels for independent sampling
if args.sampling_mode == 'indep':
for lf_name, labels in labels_dict.items():
random_idx = torch.randperm(labels.size(0))
labels_dict[lf_name] = labels[random_idx]
labels_concat = torch.cat(list(labels_dict.values()), dim=-1) # MC sample of labels
# Generate rollouts with labels
with torch.no_grad():
env.reset(init_state=states[0].clone())
model.reset_policy(labels=labels_concat, temperature=args.temperature)
rollout_states, rollout_actions = generate_rollout(env, model, burn_in=args.burn_in, burn_in_actions=actions, horizon=actions.size(0))
rollout_states = rollout_states.transpose(0,1)
rollout_actions = rollout_actions.transpose(0,1)
stylecon_by_sample = torch.ones(args.num_samples) # used to track if ALL categorical labels are self-consistent
categorical_lf_count = 0
for lf in dataset.active_label_functions:
print('--- {} ---'.format(lf.name))
y = labels_dict[lf.name]
# Apply labeling functions on rollouts
rollouts_y = lf.label(rollout_states, rollout_actions, batch=True)
if lf.categorical:
# Compute stylecon for each label class
matching_y = y*rollouts_y
class_count = torch.sum(y, dim=0)
stylecon_class_count = torch.sum(matching_y, dim=0)
stylecon_by_class = stylecon_class_count/class_count
stylecon_by_class = [round(i,4) for i in stylecon_by_class.tolist()]
# Compute stylecon for each sample
stylecon_by_sample *= torch.sum(matching_y, dim=1)
categorical_lf_count += 1
print('class_sc_cnt:\t {}'.format(stylecon_class_count.int().tolist()))
print('class_cnt:\t {}'.format(class_count.int().tolist()))
print('class_sc:\t {}'.format(stylecon_by_class))
print('average: {}'.format(torch.sum(stylecon_class_count)/torch.sum(class_count)))
else:
# Compute stylecon
diff = rollouts_y-y
print('L1 stylecon {}'.format(torch.mean(torch.abs(diff)).item()))
print('L2 stylecon {}'.format(torch.mean(diff**2).item()))
# Visualizing stylecon
range_lower = dataset.summary['label_functions'][lf.name]['train_dist']['min']
range_upper = dataset.summary['label_functions'][lf.name]['train_dist']['max']
label_values = np.linspace(range_lower, range_upper, args.num_values)
rollouts_y_mean = np.zeros(args.num_values)
rollouts_y_std = np.zeros(args.num_values)
for i, val in enumerate(label_values):
# Set labels
# TODO this is not MC-sampling, need to do rejection sampling for true computation I think
labels_dict_copy = { key: value for key, value in labels_dict.items() }
labels_dict_copy[lf.name] = val*torch.ones(args.num_samples, 1)
labels_concat = torch.cat(list(labels_dict_copy.values()), dim=-1)
# Generate samples with labels
with torch.no_grad():
samples = model.generate(x, labels_concat, burn_in=args.burn_in, temperature=args.temperature)
samples = samples.transpose(0,1)
# Apply labeling functions on samples
rollouts_y = lf.label(samples, batch=True)
# Compute statistics of labels
rollouts_y_mean[i] = torch.mean(rollouts_y).item()
rollouts_y_std[i] = torch.std(rollouts_y).item()
plt.plot(label_values, label_values, color='b', marker='o')
plt.plot(label_values, rollouts_y_mean, color='r', marker='o')
plt.fill_between(label_values, rollouts_y_mean-2*rollouts_y_std, rollouts_y_mean+2*rollouts_y_std, color='red', alpha=0.3)
plt.xlabel('Input Label')
plt.ylabel('Output Label')
plt.title('LF_{}, {} samples, 2 stds'.format(lf.name, args.num_samples))
plt.savefig(os.path.join(trial_dir, 'results', '{}.png'.format(lf.name)))
plt.close()
stylecon_all_count = int(torch.sum(stylecon_by_sample))
print('--- stylecon for {} categorical LFs: {} [{}/{}] ---'.format(
categorical_lf_count, stylecon_all_count/args.num_samples, stylecon_all_count, args.num_samples))
def visualize_samples_ctvae(exp_dir, trial_id, num_samples, num_values,
repeat_index, burn_in, temperature):
print(
'#################### Trial {} ####################'.format(trial_id))
# Get trial folder
trial_dir = os.path.join(exp_dir, trial_id)
assert os.path.isfile(os.path.join(trial_dir, 'summary.json'))
# Load config
with open(os.path.join(exp_dir, 'configs', '{}.json'.format(trial_id)),
'r') as f:
config = json.load(f)
data_config = config['data_config']
model_config = config['model_config']
# Load dataset
dataset = load_dataset(data_config)
dataset.eval()
# Load best model
state_dict = torch.load(os.path.join(trial_dir, 'best.pth'),
map_location=lambda storage, loc: storage)
model_class = get_model_class(model_config['name'].lower())
assert model_class.requires_labels
model_config['label_functions'] = dataset.active_label_functions
model = model_class(model_config)
model.filter_and_load_state_dict(state_dict)
# Load environment
env = load_environment(data_config['name']) # TODO make env_config?
# TODO for now, assume just one active label function
assert len(dataset.active_label_functions) == 1
for lf in dataset.active_label_functions:
loader = DataLoader(dataset, batch_size=num_samples, shuffle=False)
(states, actions, labels_dict) = next(iter(loader))
if repeat_index >= 0:
states_single = states[repeat_index].unsqueeze(0)
states = states_single.repeat(num_samples, 1, 1)
actions_single = actions[repeat_index].unsqueeze(0)
actions = actions_single.repeat(num_samples, 1, 1)
states = states.transpose(0, 1)
actions = actions.transpose(0, 1)
if lf.categorical:
label_values = np.arange(0, lf.output_dim)
else:
range_lower = torch.min(dataset.lf_labels[lf.name])
range_upper = torch.max(dataset.lf_labels[lf.name])
label_values = np.linspace(range_lower, range_upper,
num_values + 2)
label_values = np.around(label_values, decimals=1)
label_values = label_values[1:-1]
for c in label_values:
if lf.categorical:
y = torch.zeros(num_samples, lf.output_dim)
y[:, c] = 1
else:
y = c * torch.ones(num_samples, 1)
# Generate rollouts with labels
with torch.no_grad():
env.reset(init_state=states[0].clone())
model.reset_policy(labels=y, temperature=args.temperature)
rollout_states, rollout_actions = generate_rollout(
env,
model,
burn_in=args.burn_in,
burn_in_actions=actions,
horizon=actions.size(0))
rollout_states = rollout_states.transpose(0, 1)
rollout_actions = rollout_actions.transpose(0, 1)
dataset.save(
rollout_states,
rollout_actions,
labels=y,
lf_list=dataset.active_label_functions,
burn_in=burn_in,
# save_path=os.path.join(trial_dir, 'results', '{}_label_{}'.format(lf.name, c)),
# save_name='repeat_{:03d}'.format(repeat_index) if repeat_index >= 0 else '',
save_path=os.path.join(trial_dir, 'results', lf.name),
save_name='repeat_{:03d}_{}'.format(repeat_index, c)
if repeat_index >= 0 else '',
single_plot=(repeat_index >= 0))
