def attach_metrics(engine: Engine):
Average(output_transform=lambda d: d["loss"]).attach(engine, "loss")
Average(output_transform=lambda d: d["kl_div"]).attach(engine, "kl_div")
Average(
output_transform=lambda d: d["recon_loss"]).attach(
engine,
"recon_loss")
def __init__(self, trainer, res_dir='results', **kwargs):
self.trainer = trainer
self.start_datetime = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
self.res_dir = Path(res_dir) / self.start_datetime
self.res_dir.mkdir(parents=True)
metric_loss = Average()
metric_loss.attach(self.trainer, 'loss')
def attach_pbar_and_metrics(trainer, evaluator):
loss_metric = Average(output_transform=lambda output: output["loss"])
accuracy_metric = Accuracy(
output_transform=lambda output: (output["logit"], output["label"]))
pbar = ProgressBar()
loss_metric.attach(trainer, "loss")
accuracy_metric.attach(trainer, "accuracy")
accuracy_metric.attach(evaluator, "accuracy")
pbar.attach(trainer)
def setup_training(self):
assert self.batch_size is not None
trainer = Engine(lambda e, b: self.train_step(b))
trainer.register_events("EVAL_DONE")
Average(lambda o: o['loss']).attach(trainer, 'avg_loss')
state_vars = dict(model=self.model, opt=self.opt, trainer=trainer)
checkpoint_handler = ModelCheckpoint(self.run_path, '', score_function=lambda e: e.state.metrics['val_accuracy'],
score_name='val_accuracy', n_saved=2, global_step_transform=lambda e, evt_name: e.state.epoch)
if checkpoint_handler.last_checkpoint:
checkpoint_handler.load_objects(state_vars, self.run_path / checkpoint_handler.last_checkpoint)
trainer.add_event_handler("EVAL_DONE", lambda e: checkpoint_handler(e, state_vars))
if self.use_lr_decay:
trainer.add_event_handler(Events.ITERATION_COMPLETED, lambda e: self.lr_decay.step(e.state.iteration * self.batch_size))
RunningAverage(output_transform=lambda o: o['loss']).attach(trainer, 'running_avg_loss')
ProgressBar().attach(trainer, ['running_avg_loss'])
logger.setup_logger(self.run_path, trainer, self.model)
@trainer.on(Events.EPOCH_COMPLETED)
def eval_and_log(e: Engine):
eval_results = self.eval()
e.state.metrics['val_accuracy'] = eval_results['val'].metrics['accuracy']
e.state.metrics['val_loss'] = eval_results['val'].metrics['avg_loss']
e.state.eval_results = eval_results
e.fire_event("EVAL_DONE")
if self.use_early_stop:
es = self.make_early_stopper(trainer)
trainer.add_event_handler("EVAL_DONE", es)
return trainer
def create_evaluator(model, tasks, args):
model.to(args.device)
@torch.no_grad()
def evaluator_step(engine, batch):
model.eval()
x, y = batch
x = x.to(args.device)
y = [_y.to(device=args.device) for _y in y]
losses = {}
preds = model(x)
for rep_i, task_i in zip(preds, tasks):
losses[f'loss_{task_i.name}'] = task_i.loss(
rep_i, y[task_i.index]).mean(dim=0)
losses[f'metric_{task_i.name}'] = task_i.metric(
rep_i, y[task_i.index]).mean(dim=0)
preds = [pred_i.detach().clone() for pred_i in preds]
return losses, y, preds
evaluator = Engine(evaluator_step)
for task_i in tasks:
for prefix in ['metric', 'loss']:
name = f'{prefix}_{task_i.name}'
output_transform = partial(lambda name, x: x[0][name], name)
Average(output_transform=output_transform).attach(evaluator, name)
return evaluator
def create_classification_trainer(
model,
optimizer,
loss_fn,
device=None,
non_blocking=False,
prepare_batch=_prepare_batch,
output_transform=lambda x, y, y_pred, loss: loss.item()): # noqa
"""
Factory function for creating a trainer for supervised models.
Args:
model (`torch.nn.Module`): the model to train.
optimizer (`torch.optim.Optimizer`): the optimizer to use.
loss_fn (torch.nn loss function): the loss function to use.
device (str, optional): device type specification (default: None).
Applies to both model and batches.
non_blocking (bool, optional): if True and this copy is between CPU and GPU, the copy may occur asynchronously
with respect to the host. For other cases, this argument has no effect.
prepare_batch (callable, optional): function that receives `batch`, `device`, `non_blocking` and outputs
tuple of tensors `(batch_x, batch_y)`.
output_transform (callable, optional): function that receives 'x', 'y', 'y_pred', 'loss' and returns value
to be assigned to engine's state.output after each iteration. Default is returning `loss.item()`.
Note: `engine.state.output` for this engine is defind by `output_transform` parameter and is the loss
of the processed batch by default.
Returns:
Engine: a trainer engine with supervised update function.
"""
if device:
model.to(device)
def _update(engine, batch):
model.train()
optimizer.zero_grad()
x, y = prepare_batch(batch, device=device, non_blocking=non_blocking)
y_pred = model(x)
loss = loss_fn(y_pred, y)
loss.backward()
optimizer.step()
return output_transform(x, y, y_pred, loss)
engine = Engine(_update)
metric_loss = Average()
metric_loss.attach(engine, 'loss')
return engine
def run(model,
train_loader,
val_loader,
optimizer,
epochs,
log_interval,
log_dir,
val=False,
log=True):
writer = create_summary_writer(log_dir)
device = 'cpu'
if torch.cuda.is_available():
device = 'cuda'
loss_metric = Average()
trainer = create_train_engine(model, optimizer, device=device)
evaluator = create_supervised_evaluator(model,
metrics={'loss': loss_metric},
device=device)
@trainer.on(Events.ITERATION_COMPLETED(every=log_interval))
def log_training_loss(engine):
# print("Epoch[{}] Iteration[{}/{}] Loss: {:.2f}"
# "".format(engine.state.epoch, engine.state.iteration, len(train_loader), engine.state.output))
writer.add_scalar("training/loss", engine.state.output,
engine.state.iteration)
if log:
@trainer.on(Events.EPOCH_COMPLETED)
def log_training_results(engine):
evaluator.run(train_loader)
metrics = evaluator.state.metrics
avg_mse = metrics['loss']
print("Training Results - Epoch: {} Avg loss: {:.2f}".format(
engine.state.epoch, avg_mse))
writer.add_scalar("training/avg_loss", avg_mse, engine.state.epoch)
if val:
@trainer.on(Events.EPOCH_COMPLETED)
def log_validation_results(engine):
evaluator.run(val_loader)
metrics = evaluator.state.metrics
avg_mse = metrics['loss']
# print("Validation Results - Epoch: {} Avg loss: {:.2f}"
# .format(engine.state.epoch, avg_mse))
writer.add_scalar("validation/avg_loss", avg_mse,
engine.state.epoch)
# kick everything off
trainer.run(train_loader, max_epochs=epochs)
writer.close()
def main(ctx, config_file, dataset_root, res_root_dir, debug, device,
num_workers, **kwargs):
with open(config_file) as stream:
config = yaml.safe_load(stream)
train_transforms = get_transforms(config['train_augment'])
val_transforms = get_transforms(config['val_augment'])
train_loader, val_loader = get_loaders(train_transforms=train_transforms,
val_transforms=val_transforms,
dataset_root=dataset_root,
num_workers=num_workers,
**config['dataset'])
label_names = get_labels(train_loader)
net, criterion = get_model(n_class=len(label_names), **config['model'])
optimizer = get_optimizer(net, **config['optimizer'])
trainer = create_supervised_trainer(net, optimizer, criterion, device,
prepare_batch=prepare_batch)
metric_loss = Average()
metric_loss.attach(trainer, 'loss')
metrics = get_metrics(label_names, config['evaluate'])
metric_names = list(metrics.keys())
evaluator = create_supervised_evaluator(net, metrics, device,
prepare_batch=prepare_batch)
@trainer.on(Events.EPOCH_COMPLETED)
def compute_metrics(engine):
evaluator.run(val_loader)
res_dir = Path(res_root_dir) / config['dataset']['dataset_name']
train_extend = TrainExtension(trainer, evaluator, res_dir)
train_extend.print_metrics(metric_names)
train_extend.set_progressbar()
train_extend.schedule_lr(optimizer, **config['lr_schedule'])
if not debug:
train_extend.copy_configs(config_file)
train_extend.set_tensorboard(metric_names)
train_extend.save_model(net, **config['model_checkpoint'])
train_extend.show_config_on_tensorboard(config)
trainer.run(train_loader, max_epochs=config['epochs'])
def create_evaluator(classifier, device):
classifier.to(device)
def update_fn(engine, batch):
classifier.eval()
with torch.no_grad():
# batch = [elem.to(device) for elem in batch]
x, y = [elem.to(device) for elem in batch]
_, metrics, pred_y = classifier(x, y)
return metrics, pred_y, y
evaluator = Engine(update_fn)
for key in classifier.metrics_keys:
Average(output_transform=DictOutputTransform(key)).attach(evaluator, key)
return evaluator
def trainer(self):
if not self._trainer:
trainer = Engine(self.train_update)
metrics = {
"sim_acc":
SiamSimAccuracy(margin=self.margin,
output_transform=lambda x:
(x['emb_vecs'], x['targets'])),
"clsf_acc":
Accuracy(
output_transform=lambda x: (x['cls_pred'], x['cls_true'])),
"loss":
Average(output_transform=lambda x: x["loss"]),
"con_loss":
Average(output_transform=lambda x: x["con_loss"]),
"clsf_loss":
Average(output_transform=lambda x: x["clsf_loss"])
}
for name, metric in metrics.items():
metric.attach(trainer, name)
self._trainer = trainer
self.train_metrics = metrics
return self._trainer
def get_evaluator(net: nn.Module, device: torch.device) -> Engine:
def _inference(engine: Engine, batch: Batch) -> Tuple[T, T, T, T]:
x1, x2, t = prepare_batch(batch, device)
net.eval()
s1, s2 = net(x1), net(x2)
return s1, s2, t, ranknet_loss(s1, s2, t)
def _acc_output_transform(output: Tuple[T, T, T, T]) -> Tuple[T, T]:
s1, s2, t, _ = output
return (s1 - s2 > 0).long(), (t > 0.5).long()
ev = Engine(_inference)
Average(lambda t: t[3].item()).attach(ev, "loss")
Accuracy(_acc_output_transform).attach(ev, "accuracy")
return ev
def create_trainer(classifier, optimizer, device):
classifier.to(device)
def update_fn(engine, batch):
classifier.train()
optimizer.zero_grad()
# batch = [elem.to(device) for elem in batch]
x, y = [elem.to(device) for elem in batch]
loss, metrics, pred_y = classifier(x, y)
loss.backward()
optimizer.step()
return metrics, pred_y, y
trainer = Engine(update_fn)
for key in classifier.metrics_keys:
Average(output_transform=DictOutputTransform(key)).attach(trainer, key)
return trainer
def create_trainer(classifier, optimizer, device,w1,w2,w3):
classifier.to(device)
def update_fn(engine, batch):
# print(engine,batch)
classifier.train()
optimizer.zero_grad()
# batch = [elem.to(device) for elem in batch]
x, y = [elem.to(device) for elem in batch]
x = x.to(device,dtype = torch.float)
y = y.to(device,dtype = torch.long)
preds = classifier(x)
loss_grapheme = F.cross_entropy(preds[0], y[:,0])
loss_vowel = F.cross_entropy(preds[1], y[:,1])
loss_consonant = F.cross_entropy(preds[2], y[:,2])
loss = (loss_grapheme*w1 + loss_vowel*w2 + loss_consonant*w3)/(w1+w2+w3)
metrics = {
'loss': loss.item(),
'loss_grapheme': loss_grapheme.item(),
'loss_vowel': loss_vowel.item(),
'loss_consonant': loss_consonant.item(),
'acc_grapheme': accuracy(preds[0], y[:,0]),
'acc_vowel': accuracy(preds[1], y[:,1]),
'acc_consonant': accuracy(preds[2], y[:,2]),
}
loss.backward()
optimizer.step()
return metrics, torch.cat(preds,dim=1), y
trainer = Engine(update_fn)
# loss, metrics, pred_y = classifier(x, y)
# loss.backward()
# optimizer.step()
# return metrics, pred_y, y
# trainer = Engine(update_fn)
for key in classifier.metrics_keys:
Average(output_transform=DictOutputTransform(key)).attach(trainer, key)
return trainer
def create_evaluator(classifier, device):
classifier.to(device)
metrics_keys = classifier.metrics_keys
classifier = torch.nn.DataParallel(classifier)
def update_fn(engine, batch):
classifier.eval()
with torch.no_grad():
x = batch[0].to(device)
y = batch[1][0].to(device)
lams = batch[1][1].to(device)
_, metrics, pred_y = classifier(x, y, lams)
return metrics, pred_y, get_y_main(y, lams) # nyan
evaluator = Engine(update_fn)
for key in metrics_keys:
Average(output_transform=DictOutputTransform(key)).attach(
evaluator, key)
return evaluator
def create_evaluator(model, criterion, cfg):
def _validation_step(_, batch):
model.eval()
with torch.no_grad():
x, y = batch_to_tensor(batch, cfg)
x, y = x.to(cfg.device), y.to(cfg.device)
y_pred, hidden = model(x)
loss = criterion(y_pred, y)
if cfg.multi_label:
y_pred = (y_pred > 0).float()
return y_pred, y, loss, hidden
evaluator = Engine(_validation_step)
accuracy = Accuracy(lambda x: x[0:2], is_multilabel=cfg.multi_label)
accuracy.attach(evaluator, "acc")
precision = Precision(lambda x: x[0:2],
average=False,
is_multilabel=cfg.multi_label)
precision.attach(evaluator, 'precision')
MetricsLambda(lambda t: torch.mean(t).item(),
precision).attach(evaluator, "MP")
recall = Recall(lambda x: x[0:2],
average=False,
is_multilabel=cfg.multi_label)
recall.attach(evaluator, 'recall')
MetricsLambda(lambda t: torch.mean(t).item(),
recall).attach(evaluator, "MR")
F1 = 2. * precision * recall / (precision + recall + 1e-20)
f1 = MetricsLambda(lambda t: torch.mean(t).item(), F1)
f1.attach(evaluator, "F1")
Average(lambda x: x[2]).attach(evaluator, 'loss')
return evaluator
def setup_evaluator(self):
validator = Engine(lambda e, b: self.pred_calc_loss(b))
self.model.get_probabilities = True
def get_y_pred_y(o: dict):
"""
:param o: output of forward method
:return: tuple (y_pred, y) both with shape [batch_size * query_size, num_classes] in OHE
"""
y_pred, y = o['prob_query'].argmax(1).flatten(), o['batch']['test'][1].flatten()
num_classes = int(y.max().item())+1
y_pred = one_hot(y_pred, num_classes)
y = one_hot(y, num_classes)
assert y_pred.shape == y.shape, f"{y_pred.shape} != {y.shape}"
return y_pred, y
RunningAverage(output_transform=lambda o: o['loss']).attach(validator, 'running_avg_loss')
Average(lambda o: o['loss']).attach(validator, 'avg_loss')
ProgressBar().attach(validator, ['running_avg_loss'])
Accuracy(output_transform=get_y_pred_y, is_multilabel=True).attach(validator, 'accuracy')
return validator
def create_trainer(classifier, optimizer, device):
classifier.to(device)
metrics_keys = classifier.metrics_keys
classifier = torch.nn.DataParallel(classifier)
def update_fn(engine, batch):
classifier.train()
optimizer.zero_grad()
x = batch[0].to(device)
y = batch[1][0].to(device)
lams = batch[1][1].to(device)
loss, metrics, pred_y = classifier(x, y, lams)
loss.sum().backward()
optimizer.step()
return metrics, pred_y, get_y_main(y, lams)
trainer = Engine(update_fn)
for key in metrics_keys:
Average(output_transform=DictOutputTransform(key)).attach(trainer, key)
return trainer
def create_evaluator(classifier, device):
classifier.to(device)
def update_fn(engine, batch):
classifier.eval()
with torch.no_grad():
# batch = [elem.to(device) for elem in batch]
x, y = [elem.to(device) for elem in batch]
x = x.to(device,dtype = torch.float)
y = y.to(device,dtype = torch.long)
preds = classifier(x)
loss_grapheme = F.cross_entropy(preds[0], y[:,0])
loss_vowel = F.cross_entropy(preds[1], y[:,1])
loss_consonant = F.cross_entropy(preds[2], y[:,2])
loss = loss_grapheme + loss_vowel + loss_consonant
metrics = {
'loss': loss.item(),
'loss_grapheme': loss_grapheme.item(),
'loss_vowel': loss_vowel.item(),
'loss_consonant': loss_consonant.item(),
'acc_grapheme': accuracy(preds[0], y[:,0]),
'acc_vowel': accuracy(preds[1], y[:,1]),
'acc_consonant': accuracy(preds[2], y[:,2]),
}
return metrics, torch.cat(preds,dim=1), y
evaluator = Engine(update_fn)
# _, metrics, pred_y = classifier(x, y)
# return metrics, pred_y, y
# evaluator = Engine(update_fn)
for key in classifier.metrics_keys:
Average(output_transform=DictOutputTransform(key)).attach(evaluator, key)
return evaluator
def train():
parser = ArgumentParser()
parser.add_argument("--train_path", type=str, default='data/spolin-train-acl.json', help="Set data path")
parser.add_argument("--valid_path", type=str, default='data/spolin-valid.json', help="Set data path")
parser.add_argument("--correct_bias", type=bool, default=False, help="Set to true to correct bias for Adam optimizer")
parser.add_argument("--lr", type=float, default=2e-5, help="Set learning rate")
parser.add_argument("--n_epochs", type=int, default=4, help="Set number of epochs")
parser.add_argument("--num_warmup_steps", type=float, default=1000, help="Set number of warm-up steps")
parser.add_argument("--num_total_steps", type=float, default=10000, help="Set number of total steps")
parser.add_argument("--device", type=str, default="cuda" if torch.cuda.is_available() else "cpu", help="Device (cuda or cpu)")
parser.add_argument("--max_grad_norm", type=float, default=1.0, help="Set maximum gradient normalization.")
parser.add_argument("--pretrained_path", type=str, default='bert-base-uncased', help="Choose which pretrained model to use (bert-base-uncased, roberta-base, roberta-large, roberta-large-mnli)")
parser.add_argument("--batch_size", type=int, default=32, help="Provide the batch size")
parser.add_argument("--random_seed", type=int, default=42, help="Set the random seed")
parser.add_argument("--test", action='store_true', help="If true, run with small dataset for testing code")
parser.add_argument("--base", action='store_true', help="If true, run with base experiment configuration (training with spont only) for comparison")
args = parser.parse_args()
logging.basicConfig(level=logging.INFO)
logger.info("Arguments: {}".format(pformat(args)))
if 'roberta' in args.pretrained_path:
# initialize tokenizer and model
logger.info("Initialize model and tokenizer.")
tokenizer = RobertaTokenizer.from_pretrained(args.pretrained_path, cache_dir = '../pretrained_models')
model = RobertaForSequenceClassification.from_pretrained(args.pretrained_path, cache_dir='../pretrained_models')
### START MODEL MODIFICATION
# Pretrained model was not trained with token type ids.
# fix token type embeddings for finetuning. Without this, the model can only take 0s as valid input for token_type_ids
model.config.type_vocab_size = 2
model.roberta.embeddings.token_type_embeddings = torch.nn.Embedding(2, model.config.hidden_size)
model.roberta.embeddings.token_type_embeddings.weight.data.normal_(mean=0.0, std=model.config.initializer_range)
### END MOD
elif 'bert' in args.pretrained_path:
model = BertForSequenceClassification.from_pretrained(args.pretrained_path, cache_dir='../pretrained_models')
tokenizer = BertTokenizer.from_pretrained(args.pretrained_path, cache_dir='../pretrained_models')
model.to(args.device)
param_optimizer = list(model.named_parameters())
no_decay = ['bias', 'gamma', 'beta']
optimizer_grouped_parameters = [
{'params': [p for n, p in param_optimizer if not any(nd in n for nd in no_decay)], 'weight_decay_rate': 0.01},
{'params': [p for n, p in param_optimizer if any(nd in n for nd in no_decay)], 'weight_decay_rate': 0.0}
]
optimizer = AdamW(optimizer_grouped_parameters,
lr=args.lr,
correct_bias = args.correct_bias)
scheduler = WarmupLinearSchedule(optimizer, warmup_steps=args.num_warmup_steps, t_total=args.num_total_steps)
logger.info("Prepare datasets")
logger.info("Loading train set...")
train_data = get_data(args.train_path)
valid_data = get_data(args.valid_path)
cornell_valid_data = {k: {'cornell': valid_data[k]['cornell']} for k in valid_data.keys()}
spont_valid_data = {k: {'spont': valid_data[k]['spont']} for k in valid_data.keys()}
train_loader, train_sampler = get_data_loaders(args, train_data, args.train_path, tokenizer)
logger.info("Loading validation set...")
valid_p = Path(args.valid_path)
cornell_valid_loader, cornell_valid_sampler = get_data_loaders(args, cornell_valid_data, f"{str(valid_p.parent)}/cornell_{valid_p.name}", tokenizer)
spont_valid_loader, spont_valid_sampler = get_data_loaders(args, spont_valid_data, f"{str(valid_p.parent)}/spont_{valid_p.name}", tokenizer)
# Training function and trainer
def update(engine, batch):
model.train()
batch = tuple(input_tensor.to(args.device) for input_tensor in batch)
b_input_ids, b_input_mask, b_input_segment, b_labels = batch
optimizer.zero_grad()
#roberta has issues with token_type_ids
loss, logits = model(b_input_ids, token_type_ids=b_input_segment, attention_mask=b_input_mask, labels=b_labels)
# loss, logits = model(b_input_ids, token_type_ids=None, attention_mask=b_input_mask, labels=b_labels)
loss.backward()
torch.nn.utils.clip_grad_norm_(model.parameters(), args.max_grad_norm)
optimizer.step()
scheduler.step()
return loss.item(), logits, b_labels
trainer = Engine(update)
# Evaluation function and evaluator
def inference(engine, batch):
model.eval()
batch = tuple(input_tensor.to(args.device) for input_tensor in batch)
b_input_ids, b_input_mask, b_input_segment, b_labels = batch
with torch.no_grad():
#roberta has issues with token_type_ids
# loss, logits = model(b_input_ids, token_type_ids = None, attention_mask=b_input_mask, labels=b_labels)
loss, logits = model(b_input_ids, token_type_ids = b_input_segment, attention_mask=b_input_mask, labels=b_labels)
label_ids = b_labels
return logits, label_ids, loss.item()
cornell_evaluator = Engine(inference)
spont_evaluator = Engine(inference)
trainer.add_event_handler(Events.EPOCH_COMPLETED, lambda _: cornell_evaluator.run(cornell_valid_loader))
trainer.add_event_handler(Events.EPOCH_COMPLETED, lambda _: spont_evaluator.run(spont_valid_loader))
RunningAverage(output_transform=lambda x: x[0]).attach(trainer, "loss")
RunningAverage(Accuracy(output_transform=lambda x: (x[1], x[2]))).attach(trainer, "accuracy")
if torch.cuda.is_available():
GpuInfo().attach(trainer, name='gpu')
recall = Recall(output_transform=lambda x: (x[0], x[1]))
precision = Precision(output_transform=lambda x: (x[0], x[1]))
F1 = (precision * recall * 2 / (precision + recall)).mean()
accuracy = Accuracy(output_transform=lambda x: (x[0], x[1]))
metrics = {"recall": recall, "precision": precision, "f1": F1, "accuracy": accuracy, "loss": Average(output_transform=lambda x: x[2])}
for name, metric in metrics.items():
metric.attach(cornell_evaluator, name)
metric.attach(spont_evaluator, name)
pbar = ProgressBar(persist=True)
pbar.attach(trainer, metric_names=['loss', 'accuracy'])
pbar.attach(trainer, metric_names=['gpu:0 mem(%)', 'gpu:0 util(%)'])
cornell_evaluator.add_event_handler(Events.COMPLETED, lambda _: pbar.log_message("Cornell validation metrics:\n %s" % pformat(cornell_evaluator.state.metrics)))
spont_evaluator.add_event_handler(Events.COMPLETED, lambda _: pbar.log_message("Spont validation metrics:\n %s" % pformat(spont_evaluator.state.metrics)))
tb_logger = TensorboardLogger(log_dir=None)
tb_logger.attach(trainer, log_handler=OutputHandler(tag="training", metric_names=["loss"]), event_name=Events.ITERATION_COMPLETED)
tb_logger.attach(trainer, log_handler=OptimizerParamsHandler(optimizer), event_name=Events.ITERATION_STARTED)
tb_logger.attach(cornell_evaluator, log_handler=OutputHandler(tag="valid", metric_names=list(metrics.keys()), another_engine=trainer), event_name=Events.EPOCH_COMPLETED)
tb_logger.attach(spont_evaluator, log_handler=OutputHandler(tag="valid", metric_names=list(metrics.keys()), another_engine=trainer), event_name=Events.EPOCH_COMPLETED)
# tb_logger.writer.log_dir -> tb_logger.writer.logdir (this is the correct attribute name as seen in: https://tensorboardx.readthedocs.io/en/latest/_modules/tensorboardX/writer.html#SummaryWriter)
checkpoint_handler = ModelCheckpoint(tb_logger.writer.logdir, 'checkpoint', save_interval=1, n_saved=5)
trainer.add_event_handler(Events.EPOCH_COMPLETED, checkpoint_handler, {'mymodel': getattr(model, 'module', model)}) # "getattr" take care of distributed encapsulation
torch.save(args, tb_logger.writer.logdir + '/model_training_args.bin')
getattr(model, 'module', model).config.to_json_file(os.path.join(tb_logger.writer.logdir, CONFIG_NAME))
tokenizer.save_vocabulary(tb_logger.writer.logdir)
trainer.run(train_loader, max_epochs = args.n_epochs)
if args.n_epochs > 0:
os.rename(checkpoint_handler._saved[-1][1][-1], os.path.join(tb_logger.writer.logdir, WEIGHTS_NAME)) # TODO: PR in ignite to have better access to saved file paths (cleaner)
tb_logger.close()
def train(model,
train_loader,
eval_loaders,
optimizer,
loss_fn,
n_it_max,
patience,
split_names,
select_metric='Val accuracy_0',
select_mode='max',
viz=None,
device='cpu',
lr_scheduler=None,
name=None,
log_steps=None,
log_epoch=False,
_run=None,
prepare_batch=_prepare_batch,
single_pass=False,
n_ep_max=None):
# print(model)
if not log_steps and not log_epoch:
logger.warning('/!\\ No logging during training /!\\')
if log_steps is None:
log_steps = []
epoch_steps = len(train_loader)
if log_epoch:
log_steps.append(epoch_steps)
if single_pass:
max_epoch = 1
elif n_ep_max is None:
assert n_it_max is not None
max_epoch = int(n_it_max / epoch_steps) + 1
else:
assert n_it_max is None
max_epoch = n_ep_max
all_metrics = defaultdict(dict)
trainer = create_supervised_trainer(model,
optimizer,
loss_fn,
device=device,
prepare_batch=prepare_batch)
if hasattr(model, 'new_epoch_hook'):
trainer.add_event_handler(Events.EPOCH_STARTED, model.new_epoch_hook)
if hasattr(model, 'new_iter_hook'):
trainer.add_event_handler(Events.ITERATION_STARTED,
model.new_iter_hook)
trainer._logger.setLevel(logging.WARNING)
# trainer output is in the format (x, y, y_pred, loss, optionals)
train_loss = RunningAverage(output_transform=lambda out: out[3].item(),
epoch_bound=True)
train_loss.attach(trainer, 'Trainer loss')
if hasattr(model, 's'):
met = Average(output_transform=lambda _: float('nan')
if model.s is None else model.s)
met.attach(trainer, 'cur_s')
trainer.add_event_handler(Events.ITERATION_COMPLETED, met.completed,
'cur_s')
if hasattr(model, 'arch_sampler') and model.arch_sampler.distrib_dim > 0:
met = Average(output_transform=lambda _: float('nan')
if model.cur_split is None else model.cur_split)
met.attach(trainer, 'Trainer split')
trainer.add_event_handler(Events.ITERATION_COMPLETED, met.completed,
'Trainer split')
# trainer.add_event_handler(Events.EPOCH_STARTED, met.started)
all_ent = Average(
output_transform=lambda out: out[-1]['arch_entropy_avg'].item())
all_ent.attach(trainer, 'Trainer all entropy')
trainer.add_event_handler(Events.ITERATION_COMPLETED,
all_ent.completed, 'Trainer all entropy')
train_ent = Average(
output_transform=lambda out: out[-1]['arch_entropy_sample'].item())
train_ent.attach(trainer, 'Trainer sampling entropy')
trainer.add_event_handler(Events.ITERATION_COMPLETED,
train_ent.completed,
'Trainer sampling entropy')
trainer.add_event_handler(
Events.EPOCH_COMPLETED, lambda engine: model.check_arch_freezing(
ent=train_ent.compute(),
epoch=engine.state.iteration / (epoch_steps * max_epoch)))
def log_always(engine, name):
val = engine.state.output[-1][name]
all_metrics[name][engine.state.iteration /
epoch_steps] = val.mean().item()
def log_always_dict(engine, name):
for node, val in engine.state.output[-1][name].items():
all_metrics['node {} {}'.format(
node, name)][engine.state.iteration /
epoch_steps] = val.mean().item()
trainer.add_event_handler(Events.ITERATION_COMPLETED,
log_always_dict,
name='arch_grads')
trainer.add_event_handler(Events.ITERATION_COMPLETED,
log_always_dict,
name='arch_probas')
trainer.add_event_handler(Events.ITERATION_COMPLETED,
log_always_dict,
name='node_grads')
trainer.add_event_handler(Events.ITERATION_COMPLETED,
log_always,
name='task all_loss')
trainer.add_event_handler(Events.ITERATION_COMPLETED,
log_always,
name='arch all_loss')
trainer.add_event_handler(Events.ITERATION_COMPLETED,
log_always,
name='entropy all_loss')
if n_it_max is not None:
StopAfterIterations([n_it_max]).attach(trainer)
# epoch_pbar = ProgressBar(bar_format='{l_bar}{bar}{r_bar}', desc=name,
# persist=True, disable=not (_run or viz))
# epoch_pbar.attach(trainer, metric_names=['Train loss'])
#
# training_pbar = ProgressBar(bar_format='{l_bar}{bar}{r_bar}', desc=name,
# persist=True, disable=not (_run or viz))
# training_pbar.attach(trainer, event_name=Events.EPOCH_COMPLETED,
# closing_event_name=Events.COMPLETED)
total_time = Timer(average=False)
eval_time = Timer(average=False)
eval_time.pause()
data_time = Timer(average=False)
forward_time = Timer(average=False)
forward_time.attach(trainer,
start=Events.EPOCH_STARTED,
pause=Events.ITERATION_COMPLETED,
resume=Events.ITERATION_STARTED,
step=Events.ITERATION_COMPLETED)
epoch_time = Timer(average=False)
epoch_time.attach(trainer,
start=Events.EPOCH_STARTED,
pause=Events.EPOCH_COMPLETED,
resume=Events.EPOCH_STARTED,
step=Events.EPOCH_COMPLETED)
def get_loss(y_pred, y):
l = loss_fn(y_pred, y)
if not torch.is_tensor(l):
l, *l_details = l
return l.mean()
def get_member(x, n=0):
if isinstance(x, (list, tuple)):
return x[n]
return x
eval_metrics = {'loss': Loss(get_loss)}
for i in range(model.n_out):
out_trans = get_attr_transform(i)
def extract_ys(out):
x, y, y_pred, loss, _ = out
return out_trans((y_pred, y))
train_acc = Accuracy(extract_ys)
train_acc.attach(trainer, 'Trainer accuracy_{}'.format(i))
trainer.add_event_handler(Events.ITERATION_COMPLETED,
train_acc.completed,
'Trainer accuracy_{}'.format(i))
eval_metrics['accuracy_{}'.format(i)] = \
Accuracy(output_transform=out_trans)
# if isinstance(model, SSNWrapper):
# model.arch_sampler.entropy().mean()
evaluator = create_supervised_evaluator(model,
metrics=eval_metrics,
device=device,
prepare_batch=prepare_batch)
last_iteration = 0
patience_counter = 0
best = {
'value': float('inf') * 1 if select_mode == 'min' else -1,
'iter': -1,
'state_dict': None
}
def is_better(new, old):
if select_mode == 'min':
return new < old
else:
return new > old
def log_results(evaluator, data_loader, iteration, split_name):
evaluator.run(data_loader)
metrics = evaluator.state.metrics
log_metrics = {}
for metric_name, metric_val in metrics.items():
log_name = '{} {}'.format(split_name, metric_name)
if viz:
first = iteration == 0 and split_name == split_names[0]
viz.line(
[metric_val],
X=[iteration],
win=metric_name,
name=log_name,
update=None if first else 'append',
opts={
'title': metric_name,
'showlegend': True,
'width': 500,
'xlabel': 'iterations'
})
viz.line(
[metric_val],
X=[iteration / epoch_steps],
win='{}epoch'.format(metric_name),
name=log_name,
update=None if first else 'append',
opts={
'title': metric_name,
'showlegend': True,
'width': 500,
'xlabel': 'epoch'
})
if _run:
_run.log_scalar(log_name, metric_val, iteration)
log_metrics[log_name] = metric_val
all_metrics[log_name][iteration] = metric_val
return log_metrics
if lr_scheduler is not None:
@trainer.on(Events.EPOCH_COMPLETED)
def step(_):
lr_scheduler.step()
# logger.warning('current lr {:.5e}'.format(
# optimizer.param_groups[0]['lr']))
@trainer.on(Events.ITERATION_COMPLETED)
def log_event(trainer):
iteration = trainer.state.iteration if trainer.state else 0
nonlocal last_iteration, patience_counter, best
if not log_steps or not \
(iteration in log_steps or iteration % log_steps[-1] == 0):
return
epoch_time.pause()
eval_time.resume()
all_metrics['training_epoch'][iteration] = iteration / epoch_steps
all_metrics['training_iteration'][iteration] = iteration
if hasattr(model, 'arch_sampler'):
all_metrics['training_archs'][iteration] = \
model.arch_sampler().squeeze().detach()
# if hasattr(model, 'distrib_gen'):
# entropy = model.distrib_gen.entropy()
# all_metrics['entropy'][iteration] = entropy.mean().item()
# if trainer.state and len(trainer.state.metrics) > 1:
# raise ValueError(trainer.state.metrics)
all_metrics['data time'][iteration] = data_time.value()
all_metrics['data time_ps'][iteration] = data_time.value() / max(
data_time.step_count, 1.)
all_metrics['forward time'][iteration] = forward_time.value()
all_metrics['forward time_ps'][iteration] = forward_time.value() / max(
forward_time.step_count, 1.)
all_metrics['epoch time'][iteration] = epoch_time.value()
all_metrics['epoch time_ps'][iteration] = epoch_time.value() / max(
epoch_time.step_count, 1.)
if trainer.state:
# logger.warning(trainer.state.metrics)
for metric, value in trainer.state.metrics.items():
all_metrics[metric][iteration] = value
if viz:
viz.line(
[value],
X=[iteration],
win=metric.split()[-1],
name=metric,
update=None if iteration == 0 else 'append',
opts={
'title': metric,
'showlegend': True,
'width': 500,
'xlabel': 'iterations'
})
iter_this_step = iteration - last_iteration
for d_loader, name in zip(eval_loaders, split_names):
if name == 'Train':
if iteration == 0:
all_metrics['Trainer loss'][iteration] = float('nan')
all_metrics['Trainer accuracy_0'][iteration] = float('nan')
if hasattr(model, 'arch_sampler'):
all_metrics['Trainer all entropy'][iteration] = float(
'nan')
all_metrics['Trainer sampling entropy'][
iteration] = float('nan')
# if hasattr(model, 'cur_split'):
all_metrics['Trainer split'][iteration] = float('nan')
continue
split_metrics = log_results(evaluator, d_loader, iteration, name)
if select_metric not in split_metrics:
continue
if is_better(split_metrics[select_metric], best['value']):
best['value'] = split_metrics[select_metric]
best['iter'] = iteration
best['state_dict'] = copy.deepcopy(model.state_dict())
if patience > 0:
patience_counter = 0
elif patience > 0:
patience_counter += iter_this_step
if patience_counter >= patience:
logger.info('#####')
logger.info('# Early stopping Run')
logger.info('#####')
trainer.terminate()
last_iteration = iteration
eval_time.pause()
eval_time.step()
all_metrics['eval time'][iteration] = eval_time.value()
all_metrics['eval time_ps'][iteration] = eval_time.value(
) / eval_time.step_count
all_metrics['total time'][iteration] = total_time.value()
epoch_time.resume()
log_event(trainer)
#
# @trainer.on(Events.EPOCH_COMPLETED)
# def log_epoch(trainer):
# iteration = trainer.state.iteration if trainer.state else 0
# epoch = iteration/epoch_steps
# fw_t = forward_time.value()
# fw_t_ps = fw_t / forward_time.step_count
# d_t = data_time.value()
# d_t_ps = d_t / data_time.step_count
# e_t = epoch_time.value()
# e_t_ps = e_t / epoch_time.step_count
# ev_t = eval_time.value()
# ev_t_ps = ev_t / eval_time.step_count
# logger.warning('<{}> Epoch {}/{} finished (Forward: {:.3f}s({:.3f}), '
# 'data: {:.3f}s({:.3f}), epoch: {:.3f}s({:.3f}),'
# ' Eval: {:.3f}s({:.3f}), Total: '
# '{:.3f}s)'.format(type(model).__name__, epoch,
# max_epoch, fw_t, fw_t_ps, d_t, d_t_ps,
# e_t, e_t_ps, ev_t, ev_t_ps,
# total_time.value()))
data_time.attach(trainer,
start=Events.STARTED,
pause=Events.ITERATION_STARTED,
resume=Events.ITERATION_COMPLETED,
step=Events.ITERATION_STARTED)
if hasattr(model, 'iter_per_epoch'):
model.iter_per_epoch = len(train_loader)
trainer.run(train_loader, max_epochs=max_epoch)
return trainer.state.iteration, all_metrics, best
def run_training(self):
########## init wandb ###########
print(GREEN + "*************** START TRAINING *******************")
# fixme check if this works
for (key, val) in self.config.items():
print(GREEN + f"{key}: {val}") # print to console
wandb.config.update({key: val}) # update wandb config
print(GREEN + "**************************************************" +
ENDC)
########## checkpoints ##########
if self.config["general"]["restart"]:
mod_ckpt, op_ckpt = self._load_ckpt("reg_ckpt")
# flow_ckpt, flow_op_ckpt = self._load_ckpt("flow_ckpt")
else:
mod_ckpt = op_ckpt = None
dataset, image_transforms = get_dataset(self.config["data"])
transforms = tt.Compose([tt.ToTensor()])
train_dataset = dataset(transforms,
data_keys=self.data_keys,
mode="train",
label_transfer=True,
debug=self.config["general"]["debug"],
crop_app=True,
**self.config["data"])
# if seq_length is pruned, use min seq_length, such that the seq_length of test_dataset lower or equal than that of the train dataset
# collect_len = train_dataset.seq_length
# self.collect_recon_loss_seq = {
# k: np.zeros(shape=[k])
# for k in range(collect_len[0], collect_len[-1])
# }
# self.collect_count_seq_lens = np.zeros(shape=[collect_len[-1]])
# # adapt sequence_length
# self.config["data"]["seq_length"] = (
# min(self.config["data"]["seq_length"][0], train_dataset.seq_length[0]),
# min(self.config["data"]["seq_length"][1], train_dataset.seq_length[1]),
# )
train_sampler = RandomSampler(data_source=train_dataset)
seq_sampler_train = SequenceSampler(
train_dataset,
sampler=train_sampler,
batch_size=self.config["training"]["batch_size"],
drop_last=True,
)
train_loader = DataLoader(
train_dataset,
num_workers=0 if self.config["general"]["debug"] else
self.config["data"]["n_data_workers"],
batch_sampler=seq_sampler_train,
)
# test data
t_datakeys = [key for key in self.data_keys] + [
"action",
"sample_ids",
"intrinsics",
"intrinsics_paired",
"extrinsics",
"extrinsics_paired",
]
test_dataset = dataset(image_transforms,
data_keys=t_datakeys,
mode="test",
debug=self.config["general"]["debug"],
label_transfer=True,
**self.config["data"])
assert (test_dataset.action_id_to_action is not None)
rand_sampler_test = RandomSampler(data_source=test_dataset)
seq_sampler_test = SequenceSampler(
test_dataset,
rand_sampler_test,
batch_size=self.config["training"]["batch_size"],
drop_last=True,
)
test_loader = DataLoader(
test_dataset,
num_workers=0 if self.config["general"]["debug"] else
self.config["data"]["n_data_workers"],
batch_sampler=seq_sampler_test,
)
#
rand_sampler_transfer = RandomSampler(data_source=test_dataset)
seq_sampler_transfer = SequenceSampler(
test_dataset,
rand_sampler_transfer,
batch_size=1,
drop_last=True,
)
transfer_loader = DataLoader(
test_dataset,
batch_sampler=seq_sampler_transfer,
num_workers=0 if self.config["general"]["debug"] else
self.config["data"]["n_data_workers"],
)
#
# compare_dataset = dataset(
# transforms,
# data_keys=t_datakeys,
# mode="train",
# label_transfer=True,
# debug=self.config["general"]["debug"],
# crop_app=True,
# **self.config["data"]
# )
## Classifier action
# n_actions = len(train_dataset.action_id_to_action)
# classifier_action = Classifier_action(len(train_dataset.dim_to_use), n_actions, dropout=0, dim=512).to(self.device)
# optimizer_classifier = Adam(classifier_action.parameters(), lr=0.0001, weight_decay=1e-4)
# print("Number of parameters in classifier action", sum(p.numel() for p in classifier_action.parameters()))
#
n_actions = len(train_dataset.action_id_to_action)
# # classifier_action2 = Classifier_action(len(train_dataset.dim_to_use), n_actions, dropout=0, dim=512).to(self.device)
# classifier_action2 = Sequence_disc_michael([2, 1, 1, 1], len(train_dataset.dim_to_use), out_dim=n_actions).to(self.device)
# optimizer_classifier2 = Adam(classifier_action2.parameters(), lr=0.0001, weight_decay=1e-5)
# print("Number of parameters in classifier action", sum(p.numel() for p in classifier_action2.parameters()))
# Classifier beta
classifier_beta = Classifier_action_beta(512,
n_actions).to(self.device)
optimizer_classifier_beta = Adam(classifier_beta.parameters(),
lr=0.001)
print("Number of parameters in classifier on beta",
sum(p.numel() for p in classifier_beta.parameters()))
# # Regressor
# regressor = Regressor_fly(self.config["architecture"]["dim_hidden_b"], len(train_dataset.dim_to_use)).to(self.device)
# optimizer_regressor = Adam(regressor.parameters(), lr=0.0001)
# print("Number of parameters in regressor", sum(p.numel() for p in regressor.parameters()))
########## load network and optimizer ##########
net = MTVAE(self.config["architecture"], len(train_dataset.dim_to_use),
self.device)
print(
"Number of parameters in VAE model",
sum(p.numel() for p in net.parameters()),
)
if self.config["general"]["restart"]:
if mod_ckpt is not None:
print(BLUE + f"***** Initializing VAE from checkpoint! *****" +
ENDC)
net.load_state_dict(mod_ckpt)
net.to(self.device)
optimizer = Adam(net.parameters(),
lr=self.config["training"]["lr_init"],
weight_decay=self.config["training"]["weight_decay"])
wandb.watch(net, log="all", log_freq=len(train_loader))
if self.config["general"]["restart"]:
if op_ckpt is not None:
optimizer.load_state_dict(op_ckpt)
# scheduler = torch.optim.lr_scheduler.MultiStepLR(
# optimizer, milestones=self.config["training"]["tau"], gamma=self.config["training"]["gamma"]
# )
# rec_loss = nn.MSELoss(reduction="none")
############## DISCRIMINATOR ##############################
n_kps = len(train_dataset.dim_to_use)
# make gan loss weights
print(
f"len of train_dataset: {len(train_dataset)}, len of train_loader: {len(train_loader)}"
)
# 10 epochs of fine tuning
total_steps = (self.config["training"]["n_epochs"] -
10) * len(train_loader)
get_kl_weight = partial(
linear_var,
start_it=0,
end_it=total_steps,
start_val=1e-5,
end_val=1,
clip_min=0,
clip_max=1,
)
def train_fn(engine, batch):
net.train()
# reference keypoints with label #1
kps = batch["keypoints"].to(torch.float).to(self.device)
# keypoints for cross label transfer, label #2
kps_cross = batch["paired_keypoints"].to(torch.float).to(
self.device)
p_id = batch["paired_sample_ids"].to(torch.int)
# reconstruct second sequence with inferred b
labels = batch['action'][:, 0] - 2
out_seq, mu, logstd, out_cycle = net(kps, kps_cross)
ps = torch.randn_like(out_cycle, requires_grad=False)
cycle_loss = torch.mean(torch.abs(out_cycle - ps))
kps_loss = torch.mean(torch.abs(out_seq - kps[:, net.div:]))
l_kl = kl_loss(mu, logstd)
k_vel = self.config["training"]["k_vel"]
vel_tgt = kps[:, net.div:net.div +
k_vel] - kps[:, net.div - 1:net.div + k_vel - 1]
vel_pred = out_seq[:, :k_vel] - torch.cat(
[kps[:, net.div - 1].unsqueeze(1), out_seq[:, :k_vel - 1]],
dim=1)
motion_loss = torch.mean(torch.abs(vel_tgt - vel_pred))
kl_weight = get_kl_weight(engine.state.iteration)
loss = kps_loss + kl_weight * l_kl + self.config["training"]["weight_motion"] * motion_loss \
+ self.config["training"]["weight_cycle"] * cycle_loss
#
#
if engine.state.epoch < self.config["training"]["n_epochs"] - 10:
optimizer.zero_grad()
loss.backward()
optimizer.step()
out_dict = {
"loss": loss.detach().item(),
"motion_loss": motion_loss.detach().item(),
"rec_loss": kps_loss.detach().item(),
"cycle_loss": cycle_loss.detach().item(),
"kl_loss": l_kl.detach().item(),
"kl_weight": kl_weight
}
#
#
# ## Train classifier on action
# predict = classifier_action(seq_b)[0]
# loss_classifier_action = nn.CrossEntropyLoss()(predict, labels.to(self.device))
# optimizer_classifier.zero_grad()
# loss_classifier_action.backward()
# optimizer_classifier.step()
# _, labels_pred = torch.max(nn.Sigmoid()(predict), dim=1)
# acc_action = torch.sum(labels_pred.cpu() == labels).float() / labels_pred.shape[0]
#
# predict = classifier_action2((seq_b[:, 1:] - seq_b[:, :-1]).transpose(1, 2))[0]
# loss_classifier_action2 = nn.CrossEntropyLoss()(predict, labels.to(self.device))
# optimizer_classifier2.zero_grad()
# loss_classifier_action2.backward()
# optimizer_classifier2.step()
# _, labels_pred = torch.max(nn.Sigmoid()(predict), dim=1)
# acc_action2 = torch.sum(labels_pred.cpu() == labels).float() / labels_pred.shape[0]
#
# ## Train classifier on beta
# if engine.state.epoch >= self.config["training"]["n_epochs"] - 10:
net.eval()
with torch.no_grad():
_, mu, *_ = net(kps, kps_cross)
predict = classifier_beta(mu)
loss_classifier_action_beta = nn.CrossEntropyLoss()(
predict, labels.to(self.device))
optimizer_classifier_beta.zero_grad()
loss_classifier_action_beta.backward()
optimizer_classifier_beta.step()
_, labels_pred = torch.max(nn.Sigmoid()(predict), dim=1)
acc_action_beta = torch.sum(
labels_pred.cpu() == labels).float() / labels_pred.shape[0]
#
# out_dict = {}
# # this is only run if flow training is enable
#
# # add info to out_dict
# out_dict['loss_classifier_action'] = loss_classifier_action.detach().item()
# out_dict['acc_classifier_action'] = acc_action.item()
# out_dict['loss_classifier_action2'] = loss_classifier_action2.detach().item()
# out_dict['acc_classifier_action2'] = acc_action2.item()
#
# # if engine.state.epoch >= self.config["training"]["n_epochs"] - 10:
out_dict[
'loss_classifier_action_beta'] = loss_classifier_action_beta.detach(
).item()
out_dict['acc_action_beta'] = acc_action_beta.item()
# out_dict["loss"] = loss.detach().item()
# out_dict["kl_loss"] = kl_loss_avg.detach().item()
#
# out_dict["mu_s"] = torch.mean(mu_s).item()
# out_dict["logstd_s"] = torch.mean(logstd_s).item()
# # if self.config["training"]["use_regressor"]:
# # out_dict["loss_regressor"] = torch.mean(loss_regressor).item()
# out_dict["loss_recon"] = recon_loss.detach().item()
# out_dict["loss_per_seq_recon"] = (
# recon_loss_per_seq.detach().cpu().numpy()
# )
# out_dict["seq_len"] = seq_len
#
return out_dict
##### CREATE TRAINING RUN #####
trainer = Engine(train_fn)
pbar = ProgressBar()
pbar.attach(
trainer,
output_transform=lambda x:
{key: x[key]
for key in x if "per_seq" not in key},
)
# compute averages for all outputs of train function which are specified in the list
# fixme this can be used to log as soon as losses for mtvae are defined and named
loss_avg = Average(output_transform=lambda x: x["loss"])
loss_avg.attach(trainer, "loss")
recon_loss_avg = Average(output_transform=lambda x: x["rec_loss"])
recon_loss_avg.attach(trainer, "rec_loss")
kl_loss_avg = Average(output_transform=lambda x: x["kl_loss"])
kl_loss_avg.attach(trainer, "kl_loss")
kl_loss_avg = Average(output_transform=lambda x: x["motion_loss"])
kl_loss_avg.attach(trainer, "motion_loss")
kl_loss_avg = Average(output_transform=lambda x: x["cycle_loss"])
kl_loss_avg.attach(trainer, "cycle_loss")
# mu_s_avg = Average(output_transform=lambda x: x["mu_s"])
# mu_s_avg.attach(trainer, "mu_s")
# logstd_s_avg = Average(output_transform=lambda x: x["logstd_s"])
# logstd_s_avg.attach(trainer, "logstd_s")
#
# loss_classifier = Average(output_transform=lambda x: x["loss_classifier_action"] if "loss_classifier_action" in x else 0)
# loss_classifier.attach(trainer, "loss_classifier_action")
# acc_classifier = Average(output_transform=lambda x: x["acc_classifier_action"] if "acc_classifier_action" in x else 0)
# acc_classifier.attach(trainer, "acc_classifier_action")
#
# loss_classifier_action2 = Average(output_transform=lambda x: x["loss_classifier_action2"] if "loss_classifier_action2" in x else 0)
# loss_classifier_action2.attach(trainer, "loss_classifier_action2")
# acc_classifier_action2 = Average(output_transform=lambda x: x["acc_classifier_action2"] if "acc_classifier_action2" in x else 0)
# acc_classifier_action2.attach(trainer, "acc_classifier_action2")
#
loss_classifier_action_beta = Average(
output_transform=lambda x: x["loss_classifier_action_beta"]
if "loss_classifier_action_beta" in x else 0)
loss_classifier_action_beta.attach(trainer,
"loss_classifier_action_beta")
acc_action_beta = Average(output_transform=lambda x: x[
"acc_action_beta"] if "acc_action_beta" in x else 0)
acc_action_beta.attach(trainer, "acc_action_beta")
# loss_avg = Average(output_transform=lambda x: x["loss"])
# loss_avg.attach(trainer, "loss")
##### TRAINING HOOKS ######
# @trainer.on(Events.ITERATION_COMPLETED)
# def collect_training_info(engine):
# it = engine.state.iteration
#
# self.collect_recon_loss_seq[seq_len] += engine.state.output[
# "loss_per_seq_recon"
# ]
# self.collect_count_seq_lens[seq_len] += self.config["training"]["batch_size"]
# @trainer.on(Events.EPOCH_COMPLETED)
# def update_optimizer_params(engine):
# scheduler.step()
def log_wandb(engine):
wandb.log({
"epoch": engine.state.epoch,
"iteration": engine.state.iteration,
})
print(
f"Logging metrics: Currently, the following metrics are tracked: {list(engine.state.metrics.keys())}"
)
for key in engine.state.metrics:
val = engine.state.metrics[key]
wandb.log({key + "-epoch-avg": val})
print(ENDC + f" [metrics] {key}:{val}")
# reset
# self.collect_recon_loss_seq = {
# k: np.zeros(shape=[k])
# for k in range(collect_len[0], collect_len[-1])
# }
# self.collect_count_seq_lens = np.zeros(shape=[collect_len[-1]])
loss_avg = engine.state.metrics["loss"]
print(GREEN + f"Epoch {engine.state.epoch} summary:")
print(ENDC + f" [losses] loss overall:{loss_avg}")
def eval_model(engine):
eval_nets(net,
test_loader,
self.device,
engine.state.epoch,
cf_action_beta=classifier_beta,
debug=self.config["general"]["debug"])
#
#
def transfer_behavior_test(engine):
visualize_transfer3d(
net,
transfer_loader,
self.device,
name="Test-Set: ",
dirs=self.dirs,
revert_coord_space=False,
epoch=engine.state.epoch,
n_vid_to_generate=self.config["logging"]["n_vid_to_generate"])
# # compare predictions on train and test set
# def eval_grid(engine):
# if self.config["data"]["dataset"] != "HumanEva":
# make_eval_grid(
# net,
# transfer_loader,
# self.device,
# dirs=self.dirs,
# revert_coord_space=False,
# epoch=engine.state.epoch,
# synth_ckpt=self.synth_ckpt,
# synth_params=self.synth_params,
# )
# def latent_interpolations(engine):
# latent_interpolate(
# net,
# transfer_loader,
# self.device,
# dirs=self.dirs,
# epoch=engine.state.epoch,
# synth_params=self.synth_params,
# synth_ckpt=self.synth_ckpt,
# n_vid_to_generate=self.config["logging"]["n_vid_to_generate"]
# )
ckpt_handler_reg = ModelCheckpoint(self.dirs["ckpt"],
"reg_ckpt",
n_saved=100,
require_empty=False)
save_dict = {"model": net, "optimizer": optimizer}
trainer.add_event_handler(Events.EPOCH_COMPLETED(every=1),
ckpt_handler_reg, save_dict)
trainer.add_event_handler(Events.EPOCH_COMPLETED, log_wandb)
def log_outputs(engine):
for key in engine.state.output:
val = engine.state.output[key]
wandb.log({key + "-epoch-step": val})
trainer.add_event_handler(
Events.ITERATION_COMPLETED(
every=10 if self.config["general"]["debug"] else 1000),
log_outputs)
trainer.add_event_handler(Events.EPOCH_COMPLETED, eval_model)
trainer.add_event_handler(
Events.EPOCH_COMPLETED(
every=1 if self.config["general"]["debug"] else 3),
transfer_behavior_test,
)
# trainer.add_event_handler(
# Events.EPOCH_COMPLETED(
# every=10
# ),
# latent_interpolations,
# )
# trainer.add_event_handler(
# Events.EPOCH_COMPLETED(
# every=3
# ),
# eval_grid,
# )
####### RUN TRAINING ##############
print(BLUE + "*************** Train VAE *******************" + ENDC)
trainer.run(
train_loader,
max_epochs=self.config["training"]["n_epochs"],
epoch_length=10
if self.config["general"]["debug"] else len(train_loader),
)
print(BLUE + "*************** VAE training ends *******************" +
ENDC)
def main(
batch_size,
epochs,
length_scale,
centroid_size,
model_output_size,
learning_rate,
l_gradient_penalty,
gamma,
weight_decay,
final_model,
):
name = f"DUQ_{length_scale}__{l_gradient_penalty}_{gamma}_{centroid_size}"
writer = SummaryWriter(comment=name)
ds = all_datasets["CIFAR10"]()
input_size, num_classes, dataset, test_dataset = ds
# Split up training set
idx = list(range(len(dataset)))
random.shuffle(idx)
if final_model:
train_dataset = dataset
val_dataset = test_dataset
else:
val_size = int(len(dataset) * 0.8)
train_dataset = torch.utils.data.Subset(dataset, idx[:val_size])
val_dataset = torch.utils.data.Subset(dataset, idx[val_size:])
val_dataset.transform = (test_dataset.transform
) # Test time preprocessing for validation
model = ResNet_DUQ(
input_size,
num_classes,
centroid_size,
model_output_size,
length_scale,
gamma,
)
model = model.cuda()
optimizer = torch.optim.SGD(model.parameters(),
lr=learning_rate,
momentum=0.9,
weight_decay=weight_decay)
scheduler = torch.optim.lr_scheduler.MultiStepLR(optimizer,
milestones=[25, 50, 75],
gamma=0.2)
def bce_loss_fn(y_pred, y):
bce = F.binary_cross_entropy(y_pred, y, reduction="sum").div(
num_classes * y_pred.shape[0])
return bce
def output_transform_bce(output):
y_pred, y, x = output
y = F.one_hot(y, num_classes).float()
return y_pred, y
def output_transform_acc(output):
y_pred, y, x = output
return y_pred, y
def output_transform_gp(output):
y_pred, y, x = output
return x, y_pred
def calc_gradients_input(x, y_pred):
gradients = torch.autograd.grad(
outputs=y_pred,
inputs=x,
grad_outputs=torch.ones_like(y_pred),
create_graph=True,
)[0]
gradients = gradients.flatten(start_dim=1)
return gradients
def calc_gradient_penalty(x, y_pred):
gradients = calc_gradients_input(x, y_pred)
# L2 norm
grad_norm = gradients.norm(2, dim=1)
# Two sided penalty
gradient_penalty = ((grad_norm - 1)**2).mean()
return gradient_penalty
def step(engine, batch):
model.train()
optimizer.zero_grad()
x, y = batch
x, y = x.cuda(), y.cuda()
if l_gradient_penalty > 0:
x.requires_grad_(True)
z, y_pred = model(x)
y = F.one_hot(y, num_classes).float()
loss = bce_loss_fn(y_pred, y)
if l_gradient_penalty > 0:
loss += l_gradient_penalty * calc_gradient_penalty(x, y_pred)
loss.backward()
optimizer.step()
x.requires_grad_(False)
with torch.no_grad():
model.eval()
model.update_embeddings(x, y)
return loss.item()
def eval_step(engine, batch):
model.eval()
x, y = batch
x, y = x.cuda(), y.cuda()
x.requires_grad_(True)
z, y_pred = model(x)
return y_pred, y, x
trainer = Engine(step)
evaluator = Engine(eval_step)
metric = Average()
metric.attach(trainer, "loss")
metric = Accuracy(output_transform=output_transform_acc)
metric.attach(evaluator, "accuracy")
metric = Loss(F.binary_cross_entropy,
output_transform=output_transform_bce)
metric.attach(evaluator, "bce")
metric = Loss(calc_gradient_penalty, output_transform=output_transform_gp)
metric.attach(evaluator, "gradient_penalty")
kwargs = {"num_workers": 4, "pin_memory": True}
train_loader = torch.utils.data.DataLoader(train_dataset,
batch_size=batch_size,
shuffle=True,
drop_last=True,
**kwargs)
val_loader = torch.utils.data.DataLoader(val_dataset,
batch_size=1000,
shuffle=False,
**kwargs)
test_loader = torch.utils.data.DataLoader(test_dataset,
batch_size=1000,
shuffle=False,
**kwargs)
@trainer.on(Events.EPOCH_COMPLETED)
def log_results(trainer):
metrics = trainer.state.metrics
loss = metrics["loss"]
print(f"Train - Epoch: {trainer.state.epoch} Loss: {loss:.2f} ")
writer.add_scalar("Loss/train", loss, trainer.state.epoch)
if trainer.state.epoch % 5 == 0 or trainer.state.epoch > 65:
accuracy, auroc = get_cifar_svhn_ood(model)
print(f"Test Accuracy: {accuracy}, AUROC: {auroc}")
writer.add_scalar("OoD/test_accuracy", accuracy,
trainer.state.epoch)
writer.add_scalar("OoD/roc_auc", auroc, trainer.state.epoch)
accuracy, auroc = get_auroc_classification(val_dataset, model)
print(f"AUROC - uncertainty: {auroc}")
writer.add_scalar("OoD/val_accuracy", accuracy,
trainer.state.epoch)
writer.add_scalar("OoD/roc_auc_classification", auroc,
trainer.state.epoch)
evaluator.run(val_loader)
metrics = evaluator.state.metrics
acc = metrics["accuracy"]
bce = metrics["bce"]
GP = metrics["gradient_penalty"]
loss = bce + l_gradient_penalty * GP
print((f"Valid - Epoch: {trainer.state.epoch} "
f"Acc: {acc:.4f} "
f"Loss: {loss:.2f} "
f"BCE: {bce:.2f} "
f"GP: {GP:.2f} "))
writer.add_scalar("Loss/valid", loss, trainer.state.epoch)
writer.add_scalar("BCE/valid", bce, trainer.state.epoch)
writer.add_scalar("GP/valid", GP, trainer.state.epoch)
writer.add_scalar("Accuracy/valid", acc, trainer.state.epoch)
print(f"Centroid norm: {torch.norm(model.m / model.N, dim=0)}")
scheduler.step()
if trainer.state.epoch > 65:
torch.save(model.state_dict(),
f"saved_models/{name}_{trainer.state.epoch}.pt")
pbar = ProgressBar(dynamic_ncols=True)
pbar.attach(trainer)
trainer.run(train_loader, max_epochs=epochs)
evaluator.run(test_loader)
acc = evaluator.state.metrics["accuracy"]
print(f"Test - Accuracy {acc:.4f}")
writer.close()
return {
'preds': preds,
'targets': targets,
'cross_entropy': loss.item()
}
train_metrics = {
'Loss':
RunningAverage(output_transform=lambda x: x['cross_entropy']),
'Accuracy':
RunningAverage(
Accuracy(output_transform=lambda x: (x['preds'], x['targets'])))
}
eval_metrics = {
'Loss': Average(output_transform=lambda x: x['cross_entropy']),
'Accuracy':
Accuracy(output_transform=lambda x: (x['preds'], x['targets']))
}
train(args.run_name, model, train_set, test_set, train_step, eval_step,
train_metrics, eval_metrics, args.n_iterations, args.batch_size)
predictions = []
truths = []
test_loader = DataLoader(test_set,
batch_size=args.batch_size,
shuffle=False,
num_workers=4)
model.eval()
for images, targets in test_loader:
def main(
architecture,
batch_size,
length_scale,
centroid_size,
learning_rate,
l_gradient_penalty,
gamma,
weight_decay,
final_model,
output_dir,
):
writer = SummaryWriter(log_dir=f"runs/{output_dir}")
ds = all_datasets["CIFAR10"]()
input_size, num_classes, dataset, test_dataset = ds
# Split up training set
idx = list(range(len(dataset)))
random.shuffle(idx)
if final_model:
train_dataset = dataset
val_dataset = test_dataset
else:
val_size = int(len(dataset) * 0.8)
train_dataset = torch.utils.data.Subset(dataset, idx[:val_size])
val_dataset = torch.utils.data.Subset(dataset, idx[val_size:])
val_dataset.transform = (test_dataset.transform
) # Test time preprocessing for validation
if architecture == "WRN":
model_output_size = 640
epochs = 200
milestones = [60, 120, 160]
feature_extractor = WideResNet()
elif architecture == "ResNet18":
model_output_size = 512
epochs = 200
milestones = [60, 120, 160]
feature_extractor = resnet18()
elif architecture == "ResNet50":
model_output_size = 2048
epochs = 200
milestones = [60, 120, 160]
feature_extractor = resnet50()
elif architecture == "ResNet110":
model_output_size = 2048
epochs = 200
milestones = [60, 120, 160]
feature_extractor = resnet110()
elif architecture == "DenseNet121":
model_output_size = 1024
epochs = 200
milestones = [60, 120, 160]
feature_extractor = densenet121()
# Adapted resnet from:
# https://github.com/kuangliu/pytorch-cifar/blob/master/models/resnet.py
feature_extractor.conv1 = torch.nn.Conv2d(3,
64,
kernel_size=3,
stride=1,
padding=1,
bias=False)
feature_extractor.maxpool = torch.nn.Identity()
feature_extractor.fc = torch.nn.Identity()
if centroid_size is None:
centroid_size = model_output_size
model = ResNet_DUQ(
feature_extractor,
num_classes,
centroid_size,
model_output_size,
length_scale,
gamma,
)
model = model.cuda()
optimizer = torch.optim.SGD(model.parameters(),
lr=learning_rate,
momentum=0.9,
weight_decay=weight_decay)
scheduler = torch.optim.lr_scheduler.MultiStepLR(optimizer,
milestones=milestones,
gamma=0.2)
def calc_gradients_input(x, y_pred):
gradients = torch.autograd.grad(
outputs=y_pred,
inputs=x,
grad_outputs=torch.ones_like(y_pred),
create_graph=True,
)[0]
gradients = gradients.flatten(start_dim=1)
return gradients
def calc_gradient_penalty(x, y_pred):
gradients = calc_gradients_input(x, y_pred)
# L2 norm
grad_norm = gradients.norm(2, dim=1)
# Two sided penalty
gradient_penalty = ((grad_norm - 1)**2).mean()
return gradient_penalty
def step(engine, batch):
model.train()
optimizer.zero_grad()
x, y = batch
x, y = x.cuda(), y.cuda()
x.requires_grad_(True)
y_pred = model(x)
y = F.one_hot(y, num_classes).float()
loss = F.binary_cross_entropy(y_pred, y, reduction="mean")
if l_gradient_penalty > 0:
gp = calc_gradient_penalty(x, y_pred)
loss += l_gradient_penalty * gp
loss.backward()
optimizer.step()
x.requires_grad_(False)
with torch.no_grad():
model.eval()
model.update_embeddings(x, y)
return loss.item()
def eval_step(engine, batch):
model.eval()
x, y = batch
x, y = x.cuda(), y.cuda()
x.requires_grad_(True)
y_pred = model(x)
return {"x": x, "y": y, "y_pred": y_pred}
trainer = Engine(step)
evaluator = Engine(eval_step)
metric = Average()
metric.attach(trainer, "loss")
metric = Accuracy(output_transform=lambda out: (out["y_pred"], out["y"]))
metric.attach(evaluator, "accuracy")
def bce_output_transform(out):
return (out["y_pred"], F.one_hot(out["y"], num_classes).float())
metric = Loss(F.binary_cross_entropy,
output_transform=bce_output_transform)
metric.attach(evaluator, "bce")
metric = Loss(calc_gradient_penalty,
output_transform=lambda out: (out["x"], out["y_pred"]))
metric.attach(evaluator, "gradient_penalty")
pbar = ProgressBar(dynamic_ncols=True)
pbar.attach(trainer)
kwargs = {"num_workers": 4, "pin_memory": True}
train_loader = torch.utils.data.DataLoader(train_dataset,
batch_size=batch_size,
shuffle=True,
drop_last=True,
**kwargs)
val_loader = torch.utils.data.DataLoader(val_dataset,
batch_size=batch_size,
shuffle=False,
**kwargs)
test_loader = torch.utils.data.DataLoader(test_dataset,
batch_size=batch_size,
shuffle=False,
**kwargs)
@trainer.on(Events.EPOCH_COMPLETED)
def log_results(trainer):
metrics = trainer.state.metrics
loss = metrics["loss"]
print(f"Train - Epoch: {trainer.state.epoch} Loss: {loss:.2f}")
writer.add_scalar("Loss/train", loss, trainer.state.epoch)
if trainer.state.epoch > (epochs - 5):
accuracy, auroc = get_cifar_svhn_ood(model)
print(f"Test Accuracy: {accuracy}, AUROC: {auroc}")
writer.add_scalar("OoD/test_accuracy", accuracy,
trainer.state.epoch)
writer.add_scalar("OoD/roc_auc", auroc, trainer.state.epoch)
accuracy, auroc = get_auroc_classification(val_dataset, model)
print(f"AUROC - uncertainty: {auroc}")
writer.add_scalar("OoD/val_accuracy", accuracy,
trainer.state.epoch)
writer.add_scalar("OoD/roc_auc_classification", auroc,
trainer.state.epoch)
evaluator.run(val_loader)
metrics = evaluator.state.metrics
acc = metrics["accuracy"]
bce = metrics["bce"]
GP = metrics["gradient_penalty"]
loss = bce + l_gradient_penalty * GP
print((f"Valid - Epoch: {trainer.state.epoch} "
f"Acc: {acc:.4f} "
f"Loss: {loss:.2f} "
f"BCE: {bce:.2f} "
f"GP: {GP:.2f} "))
writer.add_scalar("Loss/valid", loss, trainer.state.epoch)
writer.add_scalar("BCE/valid", bce, trainer.state.epoch)
writer.add_scalar("GP/valid", GP, trainer.state.epoch)
writer.add_scalar("Accuracy/valid", acc, trainer.state.epoch)
scheduler.step()
trainer.run(train_loader, max_epochs=epochs)
evaluator.run(test_loader)
acc = evaluator.state.metrics["accuracy"]
print(f"Test - Accuracy {acc:.4f}")
torch.save(model.state_dict(), f"runs/{output_dir}/model.pt")
writer.close()
def train(self, config, **kwargs):
"""Trains a model on the given configurations.
:param config:str: A training configuration. Note that all parameters in the config can also be manually adjusted with --ARG=VALUE
:param **kwargs: parameters to overwrite yaml config
"""
from pycocoevalcap.cider.cider import Cider
config_parameters = train_util.parse_config_or_kwargs(config, **kwargs)
config_parameters["seed"] = self.seed
zh = config_parameters["zh"]
outputdir = os.path.join(
config_parameters["outputpath"], config_parameters["model"],
"{}_{}".format(
datetime.datetime.now().strftime('%Y-%m-%d_%H-%M-%m'),
uuid.uuid1().hex))
# Early init because of creating dir
checkpoint_handler = ModelCheckpoint(
outputdir,
"run",
n_saved=1,
require_empty=False,
create_dir=True,
score_function=lambda engine: -engine.state.metrics["loss"],
score_name="loss")
logger = train_util.genlogger(os.path.join(outputdir, "train.log"))
# print passed config parameters
logger.info("Storing files in: {}".format(outputdir))
train_util.pprint_dict(config_parameters, logger.info)
vocabulary = torch.load(config_parameters["vocab_file"])
trainloader, cvloader, info = self._get_dataloaders(config_parameters, vocabulary)
config_parameters["inputdim"] = info["inputdim"]
logger.info("<== Estimating Scaler ({}) ==>".format(info["scaler"].__class__.__name__))
logger.info(
"Stream: {} Input dimension: {} Vocab Size: {}".format(
config_parameters["feature_stream"], info["inputdim"], len(vocabulary)))
train_key2refs = info["train_key2refs"]
# train_scorer = BatchCider(train_key2refs)
cv_key2refs = info["cv_key2refs"]
# cv_scorer = BatchCider(cv_key2refs)
model = self._get_model(config_parameters, vocabulary)
model = model.to(device)
train_util.pprint_dict(model, logger.info, formatter="pretty")
optimizer = getattr(
torch.optim, config_parameters["optimizer"]
)(model.parameters(), **config_parameters["optimizer_args"])
train_util.pprint_dict(optimizer, logger.info, formatter="pretty")
# scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(
# optimizer, **config_parameters["scheduler_args"])
crtrn_imprvd = train_util.criterion_improver(config_parameters["improvecriterion"])
def _train_batch(engine, batch):
model.train()
with torch.enable_grad():
optimizer.zero_grad()
train_scorer = Cider(zh=zh)
output = self._forward(model, batch, "train", train_mode="scst",
key2refs=train_key2refs, scorer=train_scorer)
output["loss"].backward()
optimizer.step()
return output
trainer = Engine(_train_batch)
RunningAverage(output_transform=lambda x: x["loss"]).attach(trainer, "running_loss")
pbar = ProgressBar(persist=False, ascii=True)
pbar.attach(trainer, ["running_loss"])
key2pred = {}
def _inference(engine, batch):
model.eval()
keys = batch[2]
with torch.no_grad():
cv_scorer = Cider(zh=zh)
output = self._forward(model, batch, "train", train_mode="scst",
key2refs=cv_key2refs, scorer=cv_scorer)
seqs = output["sampled_seqs"].cpu().numpy()
for idx, seq in enumerate(seqs):
if keys[idx] in key2pred:
continue
candidate = self._convert_idx2sentence(seq, vocabulary, zh=zh)
key2pred[keys[idx]] = [candidate,]
return output
evaluator = Engine(_inference)
RunningAverage(output_transform=lambda x: x["loss"]).attach(trainer, "running_loss")
metrics = {
"loss": Average(output_transform=lambda x: x["loss"]),
"reward": Average(output_transform=lambda x: x["reward"].reshape(-1, 1)),
}
for name, metric in metrics.items():
metric.attach(trainer, name)
metric.attach(evaluator, name)
RunningAverage(output_transform=lambda x: x["loss"]).attach(evaluator, "running_loss")
pbar.attach(evaluator, ["running_loss"])
# @trainer.on(Events.STARTED)
# def log_initial_result(engine):
# evaluator.run(cvloader, max_epochs=1)
# logger.info("Initial Results - loss: {:<5.2f}\tscore: {:<5.2f}".format(evaluator.state.metrics["loss"], evaluator.state.metrics["score"].item()))
trainer.add_event_handler(
Events.EPOCH_COMPLETED, train_util.log_results, evaluator, cvloader,
logger.info, metrics.keys(), ["loss", "reward", "score"])
def eval_cv(engine, key2pred, key2refs, scorer):
# if len(cv_key2refs) == 0:
# for key, _ in key2pred.items():
# cv_key2refs[key] = key2refs[key]
score, scores = scorer.compute_score(key2refs, key2pred)
engine.state.metrics["score"] = score
key2pred.clear()
evaluator.add_event_handler(
Events.EPOCH_COMPLETED, eval_cv, key2pred, cv_key2refs, Cider(zh=zh))
evaluator.add_event_handler(
Events.EPOCH_COMPLETED, train_util.save_model_on_improved, crtrn_imprvd,
"score", {
"model": model,
"config": config_parameters,
"scaler": info["scaler"]
}, os.path.join(outputdir, "saved.pth"))
evaluator.add_event_handler(
Events.EPOCH_COMPLETED, checkpoint_handler, {
"model": model,
}
)
trainer.run(trainloader, max_epochs=config_parameters["epochs"])
return outputdir
def main():
# region Setup
conf = parse_args()
setup_seeds(conf.session.seed)
tb_logger, tb_img_logger, json_logger = setup_all_loggers(conf)
logger.info("Parsed configuration:\n" +
pyaml.dump(OmegaConf.to_container(conf),
safe=True,
sort_dicts=False,
force_embed=True))
# region Predicate classification engines
datasets, dataset_metadata = build_datasets(conf.dataset,
seed=conf.session.seed)
dataloaders = build_dataloaders(conf, datasets)
model = build_model(conf.model,
dataset_metadata["train_gt"]).to(conf.session.device)
criterion = PredicateClassificationCriterion(conf.losses)
pred_class_trainer = Trainer(pred_class_training_step, conf)
pred_class_trainer.model = model
pred_class_trainer.criterion = criterion
pred_class_trainer.optimizer, scheduler = build_optimizer_and_scheduler(
conf.optimizer, pred_class_trainer.model)
pred_class_validator = Validator(pred_class_validation_step, conf)
pred_class_validator.model = model
pred_class_validator.criterion = criterion
pred_class_tester = Validator(pred_class_validation_step, conf)
pred_class_tester.model = model
pred_class_tester.criterion = criterion
# endregion
# region Visual Relations engines
vr_model = VisualRelationExplainer(model, dataset_metadata["train_gt"],
**conf.visual_relations)
vr_predicate_validator = Validator(vr_validation_step, conf)
vr_predicate_validator.model = vr_model
vr_predicate_tester = Validator(vr_validation_step, conf)
vr_predicate_tester.model = vr_model
vr_phrase_and_relation_validator = Validator(vr_validation_step, conf)
vr_phrase_and_relation_validator.model = vr_model
vr_phrase_and_relation_tester = Validator(vr_validation_step, conf)
vr_phrase_and_relation_tester.model = vr_model
# endregion
if "resume" in conf:
checkpoint = Path(conf.resume.checkpoint).expanduser().resolve()
logger.debug(f"Resuming checkpoint from {checkpoint}")
Checkpoint.load_objects(
{
"model": pred_class_trainer.model,
"optimizer": pred_class_trainer.optimizer,
"scheduler": scheduler,
"trainer": pred_class_trainer,
},
checkpoint=torch.load(checkpoint,
map_location=conf.session.device),
)
logger.info(f"Resumed from {checkpoint}, "
f"epoch {pred_class_trainer.state.epoch}, "
f"samples {pred_class_trainer.global_step()}")
# endregion
# region Predicate classification training callbacks
def increment_samples(trainer: Trainer):
graphs: Batch = trainer.state.batch[0]
trainer.state.samples += graphs.num_graphs
pred_class_trainer.add_event_handler(Events.ITERATION_COMPLETED,
increment_samples)
ProgressBar(persist=True, desc="[train] Predicate classification").attach(
pred_class_trainer, output_transform=itemgetter("losses"))
tb_logger.attach(
pred_class_trainer,
OptimizerParamsHandler(
pred_class_trainer.optimizer,
param_name="lr",
tag="z",
global_step_transform=pred_class_trainer.global_step,
),
Events.EPOCH_STARTED,
)
pred_class_trainer.add_event_handler(
Events.ITERATION_COMPLETED,
PredicateClassificationMeanAveragePrecisionBatch())
pred_class_trainer.add_event_handler(Events.ITERATION_COMPLETED,
RecallAtBatch(sizes=(5, 10)))
tb_logger.attach(
pred_class_trainer,
OutputHandler(
"train_gt",
output_transform=lambda o: {
**o["losses"],
"pc/mAP": o["pc/mAP"].mean().item(),
**{k: r.mean().item()
for k, r in o["recalls"].items()},
},
global_step_transform=pred_class_trainer.global_step,
),
Events.ITERATION_COMPLETED,
)
pred_class_trainer.add_event_handler(
Events.EPOCH_COMPLETED,
log_metrics,
"Predicate classification training",
"train_gt",
json_logger=None,
tb_logger=tb_logger,
global_step_fn=pred_class_trainer.global_step,
)
pred_class_trainer.add_event_handler(
Events.EPOCH_COMPLETED,
PredicateClassificationLogger(
grid=(2, 3),
tag="train_gt",
logger=tb_img_logger.writer,
metadata=dataset_metadata["train_gt"],
global_step_fn=pred_class_trainer.global_step,
),
)
tb_logger.attach(
pred_class_trainer,
EpochHandler(
pred_class_trainer,
tag="z",
global_step_transform=pred_class_trainer.global_step,
),
Events.EPOCH_COMPLETED,
)
pred_class_trainer.add_event_handler(
Events.EPOCH_COMPLETED,
lambda _: pred_class_validator.run(dataloaders["val_gt"]),
)
pred_class_trainer.add_event_handler(
Events.EPOCH_COMPLETED(epoch_filter(5)),
lambda _: vr_predicate_validator.run(dataloaders["val_gt"]),
)
pred_class_trainer.add_event_handler(
Events.EPOCH_COMPLETED(epoch_filter(2)),
lambda _: vr_phrase_and_relation_validator.run(dataloaders["val_d2"]),
)
# endregion
# region Predicate classification validation callbacks
ProgressBar(
persist=True,
desc="[val] Predicate classification").attach(pred_class_validator)
if conf.losses["bce"]["weight"] > 0:
Average(output_transform=lambda o: o["losses"]["loss/bce"]).attach(
pred_class_validator, "loss/bce")
if conf.losses["rank"]["weight"] > 0:
Average(output_transform=lambda o: o["losses"]["loss/rank"]).attach(
pred_class_validator, "loss/rank")
Average(output_transform=lambda o: o["losses"]["loss/total"]).attach(
pred_class_validator, "loss/total")
PredicateClassificationMeanAveragePrecisionEpoch(
itemgetter("target", "output")).attach(pred_class_validator, "pc/mAP")
RecallAtEpoch((5, 10),
itemgetter("target",
"output")).attach(pred_class_validator,
"pc/recall_at")
pred_class_validator.add_event_handler(
Events.EPOCH_COMPLETED,
lambda val_engine: scheduler.step(val_engine.state.metrics["loss/total"
]),
)
pred_class_validator.add_event_handler(
Events.EPOCH_COMPLETED,
log_metrics,
"Predicate classification validation",
"val_gt",
json_logger,
tb_logger,
pred_class_trainer.global_step,
)
pred_class_validator.add_event_handler(
Events.EPOCH_COMPLETED,
PredicateClassificationLogger(
grid=(2, 3),
tag="val_gt",
logger=tb_img_logger.writer,
metadata=dataset_metadata["val_gt"],
global_step_fn=pred_class_trainer.global_step,
),
)
pred_class_validator.add_event_handler(
Events.COMPLETED,
EarlyStopping(
patience=conf.session.early_stopping.patience,
score_function=lambda val_engine: -val_engine.state.metrics[
"loss/total"],
trainer=pred_class_trainer,
),
)
pred_class_validator.add_event_handler(
Events.COMPLETED,
Checkpoint(
{
"model": pred_class_trainer.model,
"optimizer": pred_class_trainer.optimizer,
"scheduler": scheduler,
"trainer": pred_class_trainer,
},
DiskSaver(
Path(conf.checkpoint.folder).expanduser().resolve() /
conf.fullname),
score_function=lambda val_engine: val_engine.state.metrics[
"pc/recall_at_5"],
score_name="pc_recall_at_5",
n_saved=conf.checkpoint.keep,
global_step_transform=pred_class_trainer.global_step,
),
)
# endregion
# region Predicate detection validation callbacks
vr_predicate_validator.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationRecallAt(type="predicate", steps=(50, 100)),
)
for step in (50, 100):
Average(output_transform=itemgetter(
f"vr/predicate/recall_at_{step}")).attach(
vr_predicate_validator, f"vr/predicate/recall_at_{step}")
if conf.dataset.name in {"unrel", "unrel_vrd"}:
UnRelDetectionMeanAvgPrecision("GT").attach(vr_predicate_validator,
"vr/unrel/mAP")
ProgressBar(
persist=True,
desc="[val] Predicate detection").attach(vr_predicate_validator)
vr_predicate_validator.add_event_handler(
Events.EPOCH_COMPLETED,
log_metrics,
"Predicate detection validation",
"val_gt",
json_logger,
tb_logger,
pred_class_trainer.global_step,
)
vr_predicate_validator.add_event_handler(
Events.EPOCH_COMPLETED,
VisualRelationPredictionLogger(
grid=(2, 3),
data_root=conf.dataset.folder,
tag="with GT boxes",
logger=tb_img_logger.writer,
top_x_relations=conf.visual_relations.top_x_relations,
metadata=dataset_metadata["val_gt"],
global_step_fn=pred_class_trainer.global_step,
),
)
# endregion
# region Phrase and relationship detection validation callbacks
ProgressBar(persist=True,
desc="[val] Phrase and relation detection").attach(
vr_phrase_and_relation_validator)
vr_phrase_and_relation_validator.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationRecallAt(type="phrase", steps=(50, 100)),
)
vr_phrase_and_relation_validator.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationRecallAt(type="relationship", steps=(50, 100)),
)
for name in ["phrase", "relationship"]:
for step in (50, 100):
Average(output_transform=itemgetter(
f"vr/{name}/recall_at_{step}")).attach(
vr_phrase_and_relation_validator,
f"vr/{name}/recall_at_{step}")
if conf.dataset.name == "hico":
HoiClassificationMeanAvgPrecision().attach(
vr_phrase_and_relation_validator, "pc/hoi/mAP")
HoiDetectionMeanAvgPrecision().attach(vr_phrase_and_relation_validator,
"vr/hoi/mAP")
elif conf.dataset.name in {"unrel", "unrel_vrd"}:
UnRelDetectionMeanAvgPrecision("D2").attach(
vr_phrase_and_relation_validator, "vr/unrel/mAP")
vr_phrase_and_relation_validator.add_event_handler(
Events.EPOCH_COMPLETED,
log_metrics,
"Phrase and relationship detection validation",
"val_d2",
json_logger,
tb_logger,
pred_class_trainer.global_step,
)
vr_phrase_and_relation_validator.add_event_handler(
Events.EPOCH_COMPLETED,
VisualRelationPredictionLogger(
grid=(2, 3),
data_root=conf.dataset.folder,
tag="with D2 boxes",
logger=tb_img_logger.writer,
top_x_relations=conf.visual_relations.top_x_relations,
metadata=dataset_metadata["val_d2"],
global_step_fn=pred_class_trainer.global_step,
),
)
# endregion
if "test" in conf.dataset:
# region Predicate classification testing callbacks
if conf.losses["bce"]["weight"] > 0:
Average(
output_transform=lambda o: o["losses"]["loss/bce"],
device=conf.session.device,
).attach(pred_class_tester, "loss/bce")
if conf.losses["rank"]["weight"] > 0:
Average(
output_transform=lambda o: o["losses"]["loss/rank"],
device=conf.session.device,
).attach(pred_class_tester, "loss/rank")
Average(
output_transform=lambda o: o["losses"]["loss/total"],
device=conf.session.device,
).attach(pred_class_tester, "loss/total")
PredicateClassificationMeanAveragePrecisionEpoch(
itemgetter("target", "output")).attach(pred_class_tester, "pc/mAP")
RecallAtEpoch((5, 10),
itemgetter("target",
"output")).attach(pred_class_tester,
"pc/recall_at")
ProgressBar(
persist=True,
desc="[test] Predicate classification").attach(pred_class_tester)
pred_class_tester.add_event_handler(
Events.EPOCH_COMPLETED,
log_metrics,
"Predicate classification test",
"test_gt",
json_logger,
tb_logger,
pred_class_trainer.global_step,
)
pred_class_tester.add_event_handler(
Events.EPOCH_COMPLETED,
PredicateClassificationLogger(
grid=(2, 3),
tag="test_gt",
logger=tb_img_logger.writer,
metadata=dataset_metadata["test_gt"],
global_step_fn=pred_class_trainer.global_step,
),
)
# endregion
# region Predicate detection testing callbacks
vr_predicate_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationRecallAt(type="predicate", steps=(50, 100)),
)
for step in (50, 100):
Average(output_transform=itemgetter(
f"vr/predicate/recall_at_{step}")).attach(
vr_predicate_tester, f"vr/predicate/recall_at_{step}")
if ("test" in conf.dataset and conf.dataset.test.name
== "vrd_relationship_detection_zero_shot"):
vr_predicate_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VrdZeroShotVisualRelationRecallAt(type="predicate",
steps=(50, 100)),
)
for step in (50, 100):
Average(output_transform=itemgetter(
f"vr/predicate/zero_shot/recall_at_{step}")).attach(
vr_predicate_tester,
f"vr/predicate/zero_shot/recall_at_{step}")
if conf.dataset.name in {"unrel", "unrel_vrd"}:
UnRelDetectionMeanAvgPrecision("GT").attach(
vr_predicate_tester, "vr/unrel/mAP")
ProgressBar(
persist=True,
desc="[test] Predicate detection").attach(vr_predicate_tester)
vr_predicate_tester.add_event_handler(
Events.EPOCH_COMPLETED,
log_metrics,
"Predicate detection test",
"test_gt",
json_logger,
tb_logger,
pred_class_trainer.global_step,
)
vr_predicate_tester.add_event_handler(
Events.EPOCH_COMPLETED,
VisualRelationPredictionLogger(
grid=(2, 3),
data_root=conf.dataset.folder,
tag="with GT boxes",
logger=tb_img_logger.writer,
top_x_relations=conf.visual_relations.top_x_relations,
metadata=dataset_metadata["test_gt"],
global_step_fn=pred_class_trainer.global_step,
),
)
vr_predicate_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationPredictionExporter(
mode="GT", dest=Path(conf.checkpoint.folder) / conf.fullname),
)
# endregion
# region Phrase and relationship detection testing callbacks
ProgressBar(persist=True,
desc="[test] Phrase and relation detection").attach(
vr_phrase_and_relation_tester)
vr_phrase_and_relation_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationRecallAt(type="phrase", steps=(50, 100)),
)
vr_phrase_and_relation_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationRecallAt(type="relationship", steps=(50, 100)),
)
for name in ["phrase", "relationship"]:
for step in (50, 100):
Average(output_transform=itemgetter(
f"vr/{name}/recall_at_{step}")).attach(
vr_phrase_and_relation_tester,
f"vr/{name}/recall_at_{step}")
if conf.dataset.name == "hico":
HoiClassificationMeanAvgPrecision().attach(
vr_phrase_and_relation_tester, "pc/hoi/mAP")
HoiDetectionMeanAvgPrecision().attach(
vr_phrase_and_relation_tester, "vr/hoi/mAP")
elif conf.dataset.name in {"unrel", "unrel_vrd"}:
UnRelDetectionMeanAvgPrecision("D2").attach(
vr_phrase_and_relation_tester, "vr/unrel/mAP")
if ("test" in conf.dataset and conf.dataset.test.name
== "vrd_relationship_detection_zero_shot"):
vr_phrase_and_relation_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VrdZeroShotVisualRelationRecallAt(type="phrase",
steps=(50, 100)),
)
vr_phrase_and_relation_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VrdZeroShotVisualRelationRecallAt(type="relationship",
steps=(50, 100)),
)
for name in ["phrase", "relationship"]:
for step in (50, 100):
Average(output_transform=itemgetter(
f"vr/{name}/zero_shot/recall_at_{step}")).attach(
vr_phrase_and_relation_tester,
f"vr/{name}/zero_shot/recall_at_{step}",
)
vr_phrase_and_relation_tester.add_event_handler(
Events.EPOCH_COMPLETED,
log_metrics,
"Phrase and relationship detection test",
"test_d2",
json_logger,
tb_logger,
pred_class_trainer.global_step,
)
vr_phrase_and_relation_tester.add_event_handler(
Events.EPOCH_COMPLETED,
VisualRelationPredictionLogger(
grid=(2, 3),
data_root=conf.dataset.folder,
tag="with D2 boxes",
logger=tb_img_logger.writer,
top_x_relations=conf.visual_relations.top_x_relations,
metadata=dataset_metadata["test_d2"],
global_step_fn=pred_class_trainer.global_step,
),
)
vr_phrase_and_relation_tester.add_event_handler(
Events.ITERATION_COMPLETED,
VisualRelationPredictionExporter(
mode="D2", dest=Path(conf.checkpoint.folder) / conf.fullname),
)
# endregion
# region Run
log_effective_config(conf, pred_class_trainer, tb_logger)
if not ("resume" in conf and conf.resume.test_only):
if conf.dataset.eager:
for n, d in datasets.items():
if n.startswith(("train", "val")):
d.load_eager()
max_epochs = conf.session.max_epochs
if "resume" in conf:
max_epochs += pred_class_trainer.state.epoch
pred_class_trainer.run(
dataloaders["train_gt"],
max_epochs=max_epochs,
seed=conf.session.seed,
epoch_length=len(dataloaders["train_gt"]),
)
if "test" in conf.dataset:
if conf.dataset.eager:
datasets["test_gt"].load_eager()
datasets["test_d2"].load_eager()
pred_class_tester.run(dataloaders["test_gt"])
vr_predicate_tester.run(dataloaders["test_gt"])
vr_phrase_and_relation_tester.run(dataloaders["test_d2"])
add_session_end(tb_logger.writer, "SUCCESS")
tb_logger.close()
tb_img_logger.close()