def main():
''' set default hyperparams in default_hyperparams.py '''
parser = argparse.ArgumentParser()
# Required arguments
parser.add_argument('-d',
'--dataset',
choices=wilds.supported_datasets,
required=True)
parser.add_argument('--algorithm',
required=True,
choices=supported.algorithms)
parser.add_argument(
'--root_dir',
required=True,
help=
'The directory where [dataset]/data can be found (or should be downloaded to, if it does not exist).'
)
# Dataset
parser.add_argument(
'--split_scheme',
help=
'Identifies how the train/val/test split is constructed. Choices are dataset-specific.'
)
parser.add_argument('--dataset_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument(
'--download',
default=False,
type=parse_bool,
const=True,
nargs='?',
help=
'If true, tries to downloads the dataset if it does not exist in root_dir.'
)
parser.add_argument(
'--frac',
type=float,
default=1.0,
help=
'Convenience parameter that scales all dataset splits down to the specified fraction, for development purposes. Note that this also scales the test set down, so the reported numbers are not comparable with the full test set.'
)
parser.add_argument('--version', default=None, type=str)
# Loaders
parser.add_argument('--loader_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument('--train_loader', choices=['standard', 'group'])
parser.add_argument('--uniform_over_groups',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--distinct_groups',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--n_groups_per_batch', type=int)
parser.add_argument('--batch_size', type=int)
parser.add_argument('--eval_loader',
choices=['standard'],
default='standard')
# Model
parser.add_argument('--model', choices=supported.models)
parser.add_argument(
'--model_kwargs',
nargs='*',
action=ParseKwargs,
default={},
help=
'keyword arguments for model initialization passed as key1=value1 key2=value2'
)
# Transforms
parser.add_argument('--train_transform', choices=supported.transforms)
parser.add_argument('--eval_transform', choices=supported.transforms)
parser.add_argument(
'--target_resolution',
nargs='+',
type=int,
help=
'The input resolution that images will be resized to before being passed into the model. For example, use --target_resolution 224 224 for a standard ResNet.'
)
parser.add_argument('--resize_scale', type=float)
parser.add_argument('--max_token_length', type=int)
# Objective
parser.add_argument('--loss_function', choices=supported.losses)
# Algorithm
parser.add_argument('--groupby_fields', nargs='+')
parser.add_argument('--group_dro_step_size', type=float)
parser.add_argument('--coral_penalty_weight', type=float)
parser.add_argument('--dann_lambda', type=float)
parser.add_argument('--dann_domain_layers', type=int,
default=1) # hidden layers
parser.add_argument('--dann_label_layers', type=int,
default=1) # hidden layers
parser.add_argument('--domain_loss_function', choices=supported.losses)
parser.add_argument('--irm_lambda', type=float)
parser.add_argument('--irm_penalty_anneal_iters', type=int)
parser.add_argument('--algo_log_metric')
# Model selection
parser.add_argument('--val_metric')
parser.add_argument('--val_metric_decreasing',
type=parse_bool,
const=True,
nargs='?')
# Optimization
parser.add_argument('--n_epochs', type=int)
parser.add_argument('--optimizer', choices=supported.optimizers)
parser.add_argument('--lr', type=float)
parser.add_argument('--weight_decay', type=float)
parser.add_argument('--max_grad_norm', type=float)
parser.add_argument('--optimizer_kwargs',
nargs='*',
action=ParseKwargs,
default={})
# Scheduler
parser.add_argument('--scheduler', choices=supported.schedulers)
parser.add_argument('--scheduler_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument('--scheduler_metric_split',
choices=['train', 'val'],
default='val')
parser.add_argument('--scheduler_metric_name')
# Evaluation
parser.add_argument('--process_outputs_function',
choices=supported.process_outputs_functions)
parser.add_argument('--evaluate_all_splits',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--eval_splits', nargs='+', default=[])
parser.add_argument('--eval_only',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument(
'--eval_epoch',
default=None,
type=int,
help=
'If eval_only is set, then eval_epoch allows you to specify evaluating at a particular epoch. By default, it evaluates the best epoch by validation performance.'
)
# Misc
parser.add_argument('--device', type=int, default=0)
parser.add_argument('--seed', type=int, default=0)
parser.add_argument('--log_dir', default='./logs')
parser.add_argument('--log_every', default=50, type=int)
parser.add_argument('--save_step', type=int)
parser.add_argument('--save_best',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--save_last',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--save_pred',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--no_group_logging',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--use_wandb',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument('--progress_bar',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument('--resume',
type=parse_bool,
const=True,
nargs='?',
default=False)
config = parser.parse_args()
config = populate_defaults(config)
# set device
config.device = torch.device("cuda:" + str(
config.device)) if torch.cuda.is_available() else torch.device("cpu")
## Initialize logs
if os.path.exists(config.log_dir) and config.resume:
resume = True
mode = 'a'
elif os.path.exists(config.log_dir) and config.eval_only:
resume = False
mode = 'a'
else:
resume = False
mode = 'w'
if not os.path.exists(config.log_dir):
os.makedirs(config.log_dir)
logger = Logger(os.path.join(config.log_dir, 'log.txt'), mode)
# Record config
log_config(config, logger)
# Set random seed
set_seed(config.seed)
# Data
full_dataset = wilds.get_dataset(dataset=config.dataset,
version=config.version,
root_dir=config.root_dir,
download=config.download,
split_scheme=config.split_scheme,
**config.dataset_kwargs)
# To implement data augmentation (i.e., have different transforms
# at training time vs. test time), modify these two lines:
train_transform = initialize_transform(
transform_name=config.train_transform,
config=config,
dataset=full_dataset)
eval_transform = initialize_transform(transform_name=config.eval_transform,
config=config,
dataset=full_dataset)
train_grouper = CombinatorialGrouper(dataset=full_dataset,
groupby_fields=config.groupby_fields)
datasets = defaultdict(dict)
for split in full_dataset.split_dict.keys():
if split == 'train':
transform = train_transform
verbose = True
elif split == 'val':
transform = eval_transform
verbose = True
else:
transform = eval_transform
verbose = False
# Get subset
datasets[split]['dataset'] = full_dataset.get_subset(
split, frac=config.frac, transform=transform)
if split == 'train':
datasets[split]['loader'] = get_train_loader(
loader=config.train_loader,
dataset=datasets[split]['dataset'],
batch_size=config.batch_size,
uniform_over_groups=config.uniform_over_groups,
grouper=train_grouper,
distinct_groups=config.distinct_groups,
n_groups_per_batch=config.n_groups_per_batch,
**config.loader_kwargs)
else:
datasets[split]['loader'] = get_eval_loader(
loader=config.eval_loader,
dataset=datasets[split]['dataset'],
grouper=train_grouper,
batch_size=config.batch_size,
**config.loader_kwargs)
# Set fields
datasets[split]['split'] = split
datasets[split]['name'] = full_dataset.split_names[split]
datasets[split]['verbose'] = verbose
# Loggers
datasets[split]['eval_logger'] = BatchLogger(
os.path.join(config.log_dir, f'{split}_eval.csv'),
mode=mode,
use_wandb=(config.use_wandb and verbose))
datasets[split]['algo_logger'] = BatchLogger(
os.path.join(config.log_dir, f'{split}_algo.csv'),
mode=mode,
use_wandb=(config.use_wandb and verbose))
if config.use_wandb:
initialize_wandb(config)
# Logging dataset info
# Show class breakdown if feasible
if config.no_group_logging and full_dataset.is_classification and full_dataset.y_size == 1 and full_dataset.n_classes <= 10:
log_grouper = CombinatorialGrouper(dataset=full_dataset,
groupby_fields=['y'])
elif config.no_group_logging:
log_grouper = None
else:
log_grouper = train_grouper
log_group_data(datasets, log_grouper, logger)
## Initialize algorithm
algorithm = initialize_algorithm(config=config,
datasets=datasets,
train_grouper=train_grouper)
model_prefix = get_model_prefix(datasets['train'], config)
if not config.eval_only:
## Load saved results if resuming
resume_success = False
if resume:
save_path = model_prefix + 'epoch:last_model.pth'
if not os.path.exists(save_path):
epochs = [
int(file.split('epoch:')[1].split('_')[0])
for file in os.listdir(config.log_dir)
if file.endswith('.pth')
]
if len(epochs) > 0:
latest_epoch = max(epochs)
save_path = model_prefix + f'epoch:{latest_epoch}_model.pth'
try:
prev_epoch, best_val_metric = load(algorithm, save_path)
epoch_offset = prev_epoch + 1
logger.write(
f'Resuming from epoch {epoch_offset} with best val metric {best_val_metric}'
)
resume_success = True
except FileNotFoundError:
pass
if resume_success == False:
epoch_offset = 0
best_val_metric = None
train(algorithm=algorithm,
datasets=datasets,
general_logger=logger,
config=config,
epoch_offset=epoch_offset,
best_val_metric=best_val_metric)
else:
if config.eval_epoch is None:
eval_model_path = model_prefix + 'epoch:best_model.pth'
else:
eval_model_path = model_prefix + f'epoch:{config.eval_epoch}_model.pth'
best_epoch, best_val_metric = load(algorithm, eval_model_path)
if config.eval_epoch is None:
epoch = best_epoch
else:
epoch = config.eval_epoch
evaluate(algorithm=algorithm,
datasets=datasets,
epoch=epoch,
general_logger=logger,
config=config)
logger.close()
for split in datasets:
datasets[split]['eval_logger'].close()
datasets[split]['algo_logger'].close()
def main():
''' set default hyperparams in default_hyperparams.py '''
parser = argparse.ArgumentParser()
# Required arguments
parser.add_argument('-d',
'--dataset',
choices=wilds.supported_datasets,
required=True)
parser.add_argument('--algorithm',
required=True,
choices=supported.algorithms)
parser.add_argument(
'--root_dir',
required=True,
help=
'The directory where [dataset]/data can be found (or should be downloaded to, if it does not exist).'
)
parser.add_argument('--pretrained_model_path',
default=None,
type=str,
help="Specify a path to a pretrained model's weights")
# Dataset
parser.add_argument(
'--split_scheme',
help=
'Identifies how the train/val/test split is constructed. Choices are dataset-specific.'
)
parser.add_argument('--dataset_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument(
'--download',
default=False,
type=parse_bool,
const=True,
nargs='?',
help=
'If true, tries to download the dataset if it does not exist in root_dir.'
)
parser.add_argument(
'--frac',
type=float,
default=1.0,
help=
'Convenience parameter that scales all dataset splits down to the specified fraction, for development purposes. Note that this also scales the test set down, so the reported numbers are not comparable with the full test set.'
)
parser.add_argument('--version', default=None, type=str)
# Loaders
parser.add_argument('--loader_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument('--train_loader', choices=['standard', 'group'])
parser.add_argument('--uniform_over_groups',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--distinct_groups',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--n_groups_per_batch', type=int)
parser.add_argument('--unlabeled_n_groups_per_batch', type=int)
parser.add_argument('--batch_size', type=int)
parser.add_argument('--unlabeled_batch_size', type=int)
parser.add_argument('--eval_loader',
choices=['standard'],
default='standard')
parser.add_argument(
'--gradient_accumulation_steps',
type=int,
default=1,
help=
'Number of batches to process before stepping optimizer and/or schedulers. If > 1, we simulate having a larger effective batch size (though batchnorm behaves differently).'
)
# Active Learning
parser.add_argument('--active_learning',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument(
'--target_split',
default="test",
type=str,
help=
'Split from which to sample labeled examples and use as unlabeled data for self-training.'
)
parser.add_argument(
'--use_target_labeled',
type=parse_bool,
const=True,
nargs='?',
default=True,
help=
"If false, we sample target labels and remove them from the eval set, but don't actually train on them."
)
parser.add_argument(
'--use_source_labeled',
type=parse_bool,
const=True,
nargs='?',
default=False,
help=
"Train on labeled source examples (perhaps in addition to labeled target examples.)"
)
parser.add_argument(
'--upsample_target_labeled',
type=parse_bool,
const=True,
nargs='?',
default=False,
help=
"If concatenating source labels, upsample target labels s.t. our labeled batches are 1/2 src and 1/2 tgt."
)
parser.add_argument('--selection_function',
choices=supported.selection_functions)
parser.add_argument(
'--selection_function_kwargs',
nargs='*',
action=ParseKwargs,
default={},
help=
"keyword arguments for selection fn passed as key1=value1 key2=value2")
parser.add_argument(
'--selectby_fields',
nargs='+',
help=
"If set, acts like a grouper and n_shots are acquired per selection group (e.g. y x hospital selects K examples per y x hospital)."
)
parser.add_argument('--n_shots',
type=int,
help="number of shots (labels) to actively acquire")
# Model
parser.add_argument('--model', choices=supported.models)
parser.add_argument(
'--model_kwargs',
nargs='*',
action=ParseKwargs,
default={},
help=
'keyword arguments for model initialization passed as key1=value1 key2=value2'
)
parser.add_argument('--freeze_featurizer',
type=parse_bool,
const=True,
nargs='?',
help="Only train classifier weights")
parser.add_argument(
'--teacher_model_path',
type=str,
help=
'Path to teacher model weights. If this is defined, pseudolabels will first be computed for unlabeled data before anything else runs.'
)
parser.add_argument('--dropout_rate', type=float)
# Transforms
parser.add_argument('--transform', choices=supported.transforms)
parser.add_argument('--additional_labeled_transform',
type=parse_none,
choices=supported.additional_transforms)
parser.add_argument('--additional_unlabeled_transform',
type=parse_none,
nargs='+',
choices=supported.additional_transforms)
parser.add_argument(
'--target_resolution',
nargs='+',
type=int,
help=
'The input resolution that images will be resized to before being passed into the model. For example, use --target_resolution 224 224 for a standard ResNet.'
)
parser.add_argument('--resize_scale', type=float)
parser.add_argument('--max_token_length', type=int)
parser.add_argument(
'--randaugment_n',
type=int,
help=
'N parameter of RandAugment - the number of transformations to apply.')
# Objective
parser.add_argument('--loss_function', choices=supported.losses)
# Algorithm
parser.add_argument('--groupby_fields', nargs='+')
parser.add_argument('--group_dro_step_size', type=float)
parser.add_argument('--coral_penalty_weight', type=float)
parser.add_argument('--irm_lambda', type=float)
parser.add_argument('--irm_penalty_anneal_iters', type=int)
parser.add_argument('--maml_first_order',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--metalearning_k', type=int)
parser.add_argument('--metalearning_adapt_lr', type=float)
parser.add_argument('--metalearning_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument('--self_training_labeled_weight',
type=float,
help='Weight of labeled loss')
parser.add_argument('--self_training_unlabeled_weight',
type=float,
help='Weight of unlabeled loss')
parser.add_argument('--self_training_threshold', type=float)
parser.add_argument(
'--pseudolabel_T2',
type=float,
help=
'Percentage of total iterations at which to end linear scheduling and hold unlabeled weight at the max value'
)
parser.add_argument('--soft_pseudolabels',
default=False,
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--algo_log_metric')
# Model selection
parser.add_argument('--val_metric')
parser.add_argument('--val_metric_decreasing',
type=parse_bool,
const=True,
nargs='?')
# Optimization
parser.add_argument('--n_epochs', type=int)
parser.add_argument('--optimizer', choices=supported.optimizers)
parser.add_argument('--lr', type=float)
parser.add_argument('--weight_decay', type=float)
parser.add_argument('--max_grad_norm', type=float)
parser.add_argument('--optimizer_kwargs',
nargs='*',
action=ParseKwargs,
default={})
# Scheduler
parser.add_argument('--scheduler', choices=supported.schedulers)
parser.add_argument('--scheduler_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument('--scheduler_metric_split',
choices=['train', 'val'],
default='val')
parser.add_argument('--scheduler_metric_name')
# Evaluation
parser.add_argument('--process_outputs_function',
choices=supported.process_outputs_functions)
parser.add_argument('--evaluate_all_splits',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument('--eval_splits', nargs='+', default=['val', 'test'])
parser.add_argument(
'--save_splits',
nargs='+',
default=['test'],
help=
'If save_pred_step or save_pseudo_step are set, then this sets which splits to save pred / pseudos for. Must be a subset of eval_splits.'
)
parser.add_argument('--eval_additional_every',
default=1,
type=int,
help='Eval additional splits every _ training epochs.')
parser.add_argument('--eval_only',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument(
'--eval_epoch',
default=None,
type=int,
help=
'If eval_only is set, then eval_epoch allows you to specify evaluating at a particular epoch. By default, it evaluates the best epoch by validation performance.'
)
# Misc
parser.add_argument('--device', type=int, nargs='+', default=[0])
parser.add_argument('--seed', type=int, default=0)
parser.add_argument('--log_dir', default='./logs')
parser.add_argument('--log_every', default=50, type=int)
parser.add_argument('--save_model_step', type=int)
parser.add_argument('--save_pred_step', type=int)
parser.add_argument('--save_pseudo_step', type=int)
parser.add_argument('--save_best',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--save_last',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--no_group_logging',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--progress_bar',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument(
'--resume',
type=parse_bool,
const=True,
nargs='?',
default=False,
help=
'Whether to resume from the most recent saved model in the current log_dir.'
)
# Weights & Biases
parser.add_argument('--use_wandb',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument(
'--wandb_api_key_path',
type=str,
help=
"Path to Weights & Biases API Key. If use_wandb is set to True and this argument is not specified, user will be prompted to authenticate."
)
parser.add_argument('--wandb_kwargs',
nargs='*',
action=ParseKwargs,
default={},
help="Will be passed directly into wandb.init().")
config = parser.parse_args()
config = populate_defaults(config)
# Set device
if torch.cuda.is_available():
device_count = torch.cuda.device_count()
if len(config.device) > device_count:
raise ValueError(
f"Specified {len(config.device)} devices, but only {device_count} devices found."
)
config.use_data_parallel = len(config.device) > 1
try:
device_str = ",".join(map(str, config.device))
config.device = torch.device(f"cuda:{device_str}")
except RuntimeError as e:
print(
f"Failed to initialize CUDA. Using torch.device('cuda') instead. Error: {str(e)}"
)
config.device = torch.device("cuda")
else:
config.use_data_parallel = False
config.device = torch.device("cpu")
## Initialize logs
if os.path.exists(config.log_dir) and config.resume:
resume = True
config.mode = 'a'
elif os.path.exists(config.log_dir) and config.eval_only:
resume = False
config.mode = 'a'
else:
resume = False
config.mode = 'w'
if not os.path.exists(config.log_dir):
os.makedirs(config.log_dir)
logger = Logger(os.path.join(config.log_dir, 'log.txt'), config.mode)
# Record config
log_config(config, logger)
# Set random seed
set_seed(config.seed)
# Algorithms that use unlabeled data must be run in active learning mode,
# because otherwise we have no unlabeled data.
if config.algorithm in ["PseudoLabel", "FixMatch", "NoisyStudent"]:
assert config.active_learning
# Data
full_dataset = wilds.get_dataset(dataset=config.dataset,
version=config.version,
root_dir=config.root_dir,
download=config.download,
split_scheme=config.split_scheme,
**config.dataset_kwargs)
# In this project, we sometimes train on batches of mixed splits, e.g. some train labeled examples and test labeled examples
# Within each batch, we may want to sample uniformly across split, or log the train v. test label balance
# To facilitate this, we'll hack the WILDS dataset to include each point's split in the metadata array
add_split_to_wilds_dataset_metadata_array(full_dataset)
# To modify data augmentation, modify the following code block.
# If you want to use transforms that modify both `x` and `y`,
# set `do_transform_y` to True when initializing the `WILDSSubset` below.
train_transform = initialize_transform(
transform_name=config.transform,
config=config,
dataset=full_dataset,
additional_transform=config.additional_labeled_transform,
is_training=True)
eval_transform = initialize_transform(transform_name=config.transform,
config=config,
dataset=full_dataset,
is_training=False)
# Define any special transforms for the algorithms that use unlabeled data
# if config.algorithm == "FixMatch":
# # For FixMatch, we need our loader to return batches in the form ((x_weak, x_strong), m)
# # We do this by initializing a special transform function
# unlabeled_train_transform = initialize_transform(
# config.transform, config, full_dataset, is_training=True, additional_transform="fixmatch"
# )
# else:
unlabeled_train_transform = initialize_transform(
config.transform,
config,
full_dataset,
is_training=True,
additional_transform=config.additional_unlabeled_transform)
train_grouper = CombinatorialGrouper(dataset=full_dataset,
groupby_fields=config.groupby_fields)
datasets = defaultdict(dict)
for split in full_dataset.split_dict.keys():
if split == 'train':
transform = train_transform
verbose = True
elif split == 'val':
transform = eval_transform
verbose = True
else:
transform = eval_transform
verbose = False
data = full_dataset.get_subset(split,
frac=config.frac,
transform=transform)
datasets[split] = configure_split_dict(
data=data,
split=split,
split_name=full_dataset.split_names[split],
get_train=(split == 'train'),
get_eval=(split != 'train'),
verbose=verbose,
grouper=train_grouper,
batch_size=config.batch_size,
config=config)
pseudolabels = None
if config.algorithm == "NoisyStudent" and config.target_split == split:
# Infer teacher outputs on unlabeled examples in sequential order
# During forward pass, ensure we are not shuffling and not applying strong augs
print(
f"Inferring teacher pseudolabels on {config.target_split} for Noisy Student"
)
assert config.teacher_model_path is not None
if not config.teacher_model_path.endswith(".pth"):
# Use the best model
config.teacher_model_path = os.path.join(
config.teacher_model_path,
f"{config.dataset}_seed:{config.seed}_epoch:best_model.pth"
)
teacher_model = initialize_model(
config, infer_d_out(full_dataset)).to(config.device)
load(teacher_model,
config.teacher_model_path,
device=config.device)
# Infer teacher outputs on weakly augmented unlabeled examples in sequential order
weak_transform = initialize_transform(
transform_name=config.transform,
config=config,
dataset=full_dataset,
is_training=True,
additional_transform="weak")
unlabeled_split_dataset = full_dataset.get_subset(
split, transform=weak_transform, frac=config.frac)
sequential_loader = get_eval_loader(
loader=config.eval_loader,
dataset=unlabeled_split_dataset,
grouper=train_grouper,
batch_size=config.unlabeled_batch_size,
**config.loader_kwargs)
pseudolabels = infer_predictions(teacher_model, sequential_loader,
config)
del teacher_model
if config.active_learning and config.target_split == split:
datasets[split]['label_manager'] = LabelManager(
subset=data,
train_transform=train_transform,
eval_transform=eval_transform,
unlabeled_train_transform=unlabeled_train_transform,
pseudolabels=pseudolabels)
if config.use_wandb:
initialize_wandb(config)
# Logging dataset info
# Show class breakdown if feasible
if config.no_group_logging and full_dataset.is_classification and full_dataset.y_size == 1 and full_dataset.n_classes <= 10:
log_grouper = CombinatorialGrouper(dataset=full_dataset,
groupby_fields=['y'])
elif config.no_group_logging:
log_grouper = None
else:
log_grouper = train_grouper
log_group_data(datasets, log_grouper, logger)
## Initialize algorithm
## Schedulers are initialized as if we will iterate over "train" split batches.
## If we train on another split (e.g. labeled test), we'll re-initialize schedulers later using algorithm.change_n_train_steps()
algorithm = initialize_algorithm(config=config,
datasets=datasets,
train_grouper=train_grouper)
if config.freeze_featurizer: freeze_features(algorithm)
if config.active_learning:
select_grouper = CombinatorialGrouper(
dataset=full_dataset, groupby_fields=config.selectby_fields)
selection_fn = initialize_selection_function(
config, algorithm, select_grouper, algo_grouper=train_grouper)
# Resume from most recent model in log_dir
model_prefix = get_model_prefix(datasets['train'], config)
if not config.eval_only:
## If doing active learning, expects to load a model trained on source
resume_success = False
if config.resume:
save_path = model_prefix + 'epoch:last_model.pth'
if not os.path.exists(save_path):
epochs = [
int(file.split('epoch:')[1].split('_')[0])
for file in os.listdir(config.log_dir)
if file.endswith('.pth')
]
if len(epochs) > 0:
latest_epoch = max(epochs)
save_path = model_prefix + f'epoch:{latest_epoch}_model.pth'
try:
prev_epoch, best_val_metric = load(algorithm, save_path,
config.device)
# also load previous selections
epoch_offset = prev_epoch + 1
config.selection_function_kwargs[
'load_selection_path'] = config.log_dir
logger.write(
f'Resuming from epoch {epoch_offset} with best val metric {best_val_metric}\n'
)
resume_success = True
except FileNotFoundError:
pass
if resume_success == False:
epoch_offset = 0
best_val_metric = None
# Log effective batch size
logger.write((
f'\nUsing gradient_accumulation_steps {config.gradient_accumulation_steps} means that'
) + (
f' the effective labeled batch size is {config.batch_size * config.gradient_accumulation_steps}'
) + (
f' and the effective unlabeled batch size is {config.unlabeled_batch_size * config.gradient_accumulation_steps}'
if config.unlabeled_batch_size else '') + (
'. Updates behave as if torch loaders have drop_last=False\n'))
if config.active_learning:
# create new labeled/unlabeled test splits
train_split, unlabeled_split = run_active_learning(
selection_fn=selection_fn,
datasets=datasets,
grouper=train_grouper,
config=config,
general_logger=logger,
full_dataset=full_dataset)
# reset schedulers, which were originally initialized to schedule based on the 'train' split
# one epoch = one pass over labeled data
algorithm.change_n_train_steps(
new_n_train_steps=infer_n_train_steps(
datasets[train_split]['train_loader'], config),
config=config)
else:
train_split = "train"
unlabeled_split = None
train(algorithm=algorithm,
datasets=datasets,
train_split=train_split,
val_split="val",
unlabeled_split=unlabeled_split,
general_logger=logger,
config=config,
epoch_offset=epoch_offset,
best_val_metric=best_val_metric)
else:
if config.eval_epoch is None:
eval_model_path = model_prefix + 'epoch:best_model.pth'
else:
eval_model_path = model_prefix + f'epoch:{config.eval_epoch}_model.pth'
best_epoch, best_val_metric = load(algorithm, eval_model_path,
config.device)
if config.eval_epoch is None:
epoch = best_epoch
else:
epoch = config.eval_epoch
if config.active_learning:
# create new labeled/unlabeled test splits
config.selection_function_kwargs[
'load_selection_path'] = config.log_dir
run_active_learning(selection_fn=selection_fn,
datasets=datasets,
grouper=train_grouper,
config=config,
general_logger=logger,
full_dataset=full_dataset)
evaluate(algorithm=algorithm,
datasets=datasets,
epoch=epoch,
general_logger=logger,
config=config)
if config.use_wandb:
wandb.finish()
logger.close()
for split in datasets:
datasets[split]['eval_logger'].close()
datasets[split]['algo_logger'].close()
def main():
''' set default hyperparams in default_hyperparams.py '''
parser = argparse.ArgumentParser()
# Required arguments
parser.add_argument('-d',
'--dataset',
choices=supported.datasets,
required=True)
parser.add_argument('--algorithm',
required=True,
choices=supported.algorithms)
parser.add_argument(
'--root_dir',
required=True,
help=
'The directory where [dataset]/data can be found (or should be downloaded to, if it does not exist).'
)
parser.add_argument('--analyze_sample', default=1)
# Dataset
parser.add_argument(
'--split_scheme',
help=
'Identifies how the train/val/test split is constructed. Choices are dataset-specific.'
)
parser.add_argument('--dataset_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument(
'--download',
default=False,
type=parse_bool,
const=True,
nargs='?',
help=
'If true, tries to downloads the dataset if it does not exist in root_dir.'
)
parser.add_argument(
'--frac',
type=float,
default=1.0,
help=
'Convenience parameter that scales all dataset splits down to the specified fraction, for development purposes.'
)
# Loaders
parser.add_argument('--loader_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument('--train_loader', choices=['standard', 'group'])
parser.add_argument('--uniform_over_groups',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--distinct_groups',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--n_groups_per_batch', type=int)
parser.add_argument('--batch_size', type=int)
parser.add_argument('--eval_loader',
choices=['standard'],
default='standard')
# Model
parser.add_argument('--model', choices=supported.models)
parser.add_argument(
'--model_kwargs',
nargs='*',
action=ParseKwargs,
default={},
help=
'keyword arguments for model initialization passed as key1=value1 key2=value2'
)
# Transforms
parser.add_argument('--train_transform', choices=supported.transforms)
parser.add_argument('--eval_transform', choices=supported.transforms)
parser.add_argument(
'--target_resolution',
nargs='+',
type=int,
help=
'target resolution. for example --target_resolution 224 224 for standard resnet.'
)
parser.add_argument('--resize_scale', type=float)
parser.add_argument('--max_token_length', type=int)
# Objective
parser.add_argument('--loss_function', choices=supported.losses)
# Algorithm
parser.add_argument('--groupby_fields', nargs='+')
parser.add_argument('--group_dro_step_size', type=float)
parser.add_argument('--coral_penalty_weight', type=float)
parser.add_argument('--irm_lambda', type=float)
parser.add_argument('--irm_penalty_anneal_iters', type=int)
parser.add_argument('--algo_log_metric')
parser.add_argument('--hsic_beta', type=float)
parser.add_argument('--grad_penalty_lamb', type=float)
parser.add_argument(
'--params_regex',
type=str,
help='Regular expression specifying which gradients to penalize.')
parser.add_argument('--label_cond',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument('--dann_lamb', type=float)
parser.add_argument('--dann_dc_name', type=str)
# Model selection
parser.add_argument('--val_metric')
parser.add_argument('--val_metric_decreasing',
type=parse_bool,
const=True,
nargs='?')
# Optimization
parser.add_argument('--n_epochs', type=int)
parser.add_argument('--optimizer', choices=supported.optimizers)
parser.add_argument('--lr', type=float)
parser.add_argument('--weight_decay', type=float)
parser.add_argument('--max_grad_norm', type=float)
parser.add_argument('--optimizer_kwargs',
nargs='*',
action=ParseKwargs,
default={})
# Scheduler
parser.add_argument('--scheduler', choices=supported.schedulers)
parser.add_argument('--scheduler_kwargs',
nargs='*',
action=ParseKwargs,
default={})
parser.add_argument('--scheduler_metric_split',
choices=['train', 'val'],
default='val')
parser.add_argument('--scheduler_metric_name')
# Evaluation
parser.add_argument('--evaluate_all_splits',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--eval_splits', nargs='+', default=[])
parser.add_argument('--eval_only',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument('--eval_epoch', default=None, type=int)
parser.add_argument('--save_z',
type=parse_bool,
const=True,
nargs='?',
default=False)
# Misc
parser.add_argument('--device', type=int, default=0)
parser.add_argument('--seed', type=int, default=0)
parser.add_argument('--log_dir', default='./logs')
parser.add_argument('--log_every', default=50, type=int)
parser.add_argument('--save_step', type=int)
parser.add_argument('--save_best',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--save_last',
type=parse_bool,
const=True,
nargs='?',
default=True)
parser.add_argument('--no_group_logging',
type=parse_bool,
const=True,
nargs='?')
parser.add_argument('--use_wandb',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument('--progress_bar',
type=parse_bool,
const=True,
nargs='?',
default=False)
parser.add_argument('--resume',
type=parse_bool,
const=True,
nargs='?',
default=False)
config = parser.parse_args()
config = populate_defaults(config)
# set device
config.device = torch.device("cuda:" + str(
config.device)) if torch.cuda.is_available() else torch.device("cpu")
## Initialize logs
if os.path.exists(config.log_dir) and config.resume:
resume = True
mode = 'a'
elif os.path.exists(config.log_dir) and config.eval_only:
resume = False
mode = 'a'
else:
resume = False
mode = 'w'
if not os.path.exists(config.log_dir):
os.makedirs(config.log_dir)
logger = Logger(os.path.join(config.log_dir, 'log.txt'), mode)
# Record config
log_config(config, logger)
# Set random seed
set_seed(config.seed)
# Data
full_dataset = supported.datasets[config.dataset](
root_dir=config.root_dir,
download=config.download,
split_scheme=config.split_scheme,
**config.dataset_kwargs)
# To implement data augmentation (i.e., have different transforms
# at training time vs. test time), modify these two lines:
train_transform = initialize_transform(
transform_name=config.train_transform,
config=config,
dataset=full_dataset)
eval_transform = initialize_transform(transform_name=config.eval_transform,
config=config,
dataset=full_dataset)
train_grouper = CombinatorialGrouper(dataset=full_dataset,
groupby_fields=config.groupby_fields)
datasets = defaultdict(dict)
for split in full_dataset.split_dict.keys():
if split == 'train':
transform = train_transform
verbose = True
elif split == 'val':
transform = eval_transform
verbose = True
else:
transform = eval_transform
verbose = False
# Get subset
datasets[split]['dataset'] = full_dataset.get_subset(
split, frac=config.frac, transform=transform)
if split == 'train':
datasets[split]['loader'] = get_train_loader(
loader=config.train_loader,
dataset=datasets[split]['dataset'],
batch_size=config.batch_size,
uniform_over_groups=config.uniform_over_groups,
grouper=train_grouper,
distinct_groups=config.distinct_groups,
n_groups_per_batch=config.n_groups_per_batch,
**config.loader_kwargs)
else:
datasets[split]['loader'] = get_eval_loader(
loader=config.eval_loader,
dataset=datasets[split]['dataset'],
grouper=train_grouper,
batch_size=config.batch_size,
**config.loader_kwargs)
# Set fields
datasets[split]['split'] = split
datasets[split]['name'] = full_dataset.split_names[split]
datasets[split]['verbose'] = verbose
# Loggers
datasets[split]['eval_logger'] = BatchLogger(
os.path.join(config.log_dir, f'{split}_eval.csv'),
mode=mode,
use_wandb=(config.use_wandb and verbose))
datasets[split]['algo_logger'] = BatchLogger(
os.path.join(config.log_dir, f'{split}_algo.csv'),
mode=mode,
use_wandb=(config.use_wandb and verbose))
if config.use_wandb:
initialize_wandb(config)
# Logging dataset info
if config.no_group_logging and full_dataset.is_classification and full_dataset.y_size == 1:
log_grouper = CombinatorialGrouper(dataset=full_dataset,
groupby_fields=['y'])
elif config.no_group_logging:
log_grouper = None
else:
log_grouper = train_grouper
log_group_data(datasets, log_grouper, logger)
## Initialize algorithm
algorithm = initialize_algorithm(config=config,
datasets=datasets,
train_grouper=train_grouper)
if config.eval_epoch is None:
eval_model_path = os.path.join(config.log_dir, 'best_model.pth')
else:
eval_model_path = os.path.join(config.log_dir,
f'{config.eval_epoch}_model.pth')
best_epoch, best_val_metric = load(algorithm, eval_model_path)
if config.eval_epoch is None:
epoch = best_epoch
else:
epoch = config.eval_epoch
results, z_splits, y_splits, c_splits = evaluate(algorithm=algorithm,
datasets=datasets,
epoch=epoch,
general_logger=logger,
config=config)
include_test = config.evaluate_all_splits or 'test' in config.eval_splits
logistics = all_logistics(z_splits,
c_splits,
y_splits,
epoch=epoch,
sample=int(config.analyze_sample),
include_test=include_test)
logistics['G0'] = results['id_val']['acc_avg']
logistics['G1'] = logistics['val_on_val']
logistics['G2'] = logistics['trainval_on_val']
logistics['G3'] = results['val']['acc_avg']
logistics['I0'] = logistics['c_train']
logistics['I1'] = logistics['c_val']
per_class = torch.tensor(list(logistics['c_perclass'].values()))
logistics['I2'] = torch.mean(per_class).item()
if include_test:
logistics['G1_test'] = logistics['test_on_test']
logistics['G2_test'] = logistics['traintest_on_test']
logistics['G3_test'] = results['test']['acc_avg']
logistics['I1_test'] = logistics['c_test']
per_class = torch.tensor(list(logistics['c_perclass_test'].values()))
logistics['I2_test'] = torch.mean(per_class).item()
with (open(os.path.join(config.log_dir, f'tests_epoch_{epoch}.pkl'),
"wb")) as f:
pickle.dump(logistics, f)
logger.close()
for split in datasets:
datasets[split]['eval_logger'].close()
datasets[split]['algo_logger'].close()