Source code for avalanche.benchmarks.datasets.clear.clear

################################################################################
# Copyright (c) 2021 ContinualAI.                                              #
# Copyrights licensed under the MIT License.                                   #
# See the accompanying LICENSE file for terms.                                 #
#                                                                              #
# Date: 05-17-2022                                                             #
# Author: Zhiqiu Lin, Jia Shi                                                  #
# E-mail: zl279@cornell.edu, jiashi@andrew.cmu.edu                             #
# Website: https://clear-benchmark.github.io                                   #
################################################################################

""" CLEAR Pytorch Dataset """

from pathlib import Path
from typing import Union, List
import json
import os

import torch
from torchvision.datasets.folder import default_loader

from avalanche.benchmarks.datasets import (
    DownloadableDataset,
    default_dataset_location,
)
from avalanche.benchmarks.utils import default_flist_reader
from avalanche.benchmarks.datasets.clear import clear_data

_CLEAR_DATA_SPLITS = {"clear10", "clear100_cvpr2022"}

CLEAR_FEATURE_TYPES = {
    "clear10": ["moco_b0", "moco_imagenet", "byol_imagenet", "imagenet"],
    "clear100_cvpr2022": ["moco_b0"]
}

SPLIT_OPTIONS = ["all", "train", "test"]

SEED_LIST = [0, 1, 2, 3, 4]  # Available seeds for train:test split


def _load_json(json_location):
    with open(json_location, "r") as f:
        obj = json.load(f)
    return obj


[docs]class CLEARDataset(DownloadableDataset): """CLEAR Base Dataset for downloading / loading metadata"""
[docs] def __init__( self, root: Union[str, Path] = None, *, data_name: str = "clear10", download: bool = True, verbose: bool = False, ): """ Creates an instance of the CLEAR dataset. This base class simply download and unzip the CLEAR dataset. This serves as a base class for _CLEARImage/_CLEARFeature dataset. :param root: The directory where the dataset can be found or downloaded. Defaults to None, which means that the default location for str(data_name) will be used. :param data_name: Data module name with the google drive url and md5 :param download: If True, the dataset will be downloaded if needed. """ if root is None: root = default_dataset_location(data_name) assert data_name in _CLEAR_DATA_SPLITS self.data_name = data_name self.module = clear_data super(CLEARDataset, self).__init__( root, download=download, verbose=True ) self._load_dataset()
def _download_dataset(self) -> None: target_module = getattr(self.module, self.data_name) for name, base_url in target_module: if self.verbose: print("Downloading " + name + "...") url = os.path.join(base_url, name) filepath = self.root / name os.system(f"wget -P {str(self.root)} {url}") self._extract_archive(filepath, remove_archive=True) def _load_metadata(self) -> bool: train_folder_path = self.root / "training_folder" if not train_folder_path.exists(): print(f"{train_folder_path} does not exist. ") return False self.bucket_indices = _load_json( train_folder_path / "bucket_indices.json" ) class_names_file = self.root / "class_names.txt" self.class_names = class_names_file.read_text().split("\n") filelist_folder_path = train_folder_path / "filelists" filelist_name = f"all.txt" filelists = [] for bucket_index in self.bucket_indices: f_path = filelist_folder_path / str(bucket_index) / filelist_name try: filelists.append(default_flist_reader(f_path)) except Exception as e: print(f"Error reading {f_path}") return False self.samples = [] for f_list in filelists: self.samples += f_list # Check whether all labeled images exist for img_path, _ in self.samples: path = self.root / img_path if not os.path.exists(path): print(f"{path} does not exist. Files not properly extracted?") return False return True def _download_error_message(self) -> str: all_urls = [ os.path.join(item[1], item[0]) for item in getattr(self.module, self.data_name) ] base_msg = ( f"[{self.data_name}] Direct download may no longer be supported!\n" "You should download data manually using the following links:\n" ) for url in all_urls: base_msg += url base_msg += "\n" base_msg += "and place these files in " + str(self.root) return base_msg def __getitem__(self, index): img_path, target = self.samples[index] return str(self.root / img_path), target def __len__(self): return len(self.samples)
class _CLEARImage(CLEARDataset): """CLEAR Image Dataset (base class for CLEARImage)""" def __init__( self, root: Union[str, Path] = None, *, data_name: str = "clear10", download: bool = True, verbose: bool = True, split: str = "all", seed: int = None, transform=None, target_transform=None, loader=default_loader, ): """ Creates an instance of the CLEAR dataset. This image dataset will contain samples from all buckets of CLEAR, so it is not intended for CL purposes. It simply download and unzip the CLEAR dataset. Paths and targets for each bucket for benchmark creation will be loaded in self._paths_and_targets ; can use self.get_paths_and_targets() with root appended to each path :param root: The directory where the dataset can be found or downloaded. Defaults to None, which means that the default location for str(data_name) will be used. :param data_name: Data module name with the google drive url and md5 :param download: If True, the dataset will be downloaded if needed. :param split: Choose from ['all', 'train', 'test']. If 'all', then return all data from all buckets. If 'train'/'test', then only return train/test data. :param seed: The random seed used for splitting the train:test into 7:3 If split=='all', then seed must be None (since no split is done) otherwise, choose from [0, 1, 2, 3, 4] :param transform: The transformations to apply to the X values. :param target_transform: The transformations to apply to the Y values. :param loader: The image loader to use. """ self.split = split assert self.split in SPLIT_OPTIONS, "Invalid split option" if self.split == "all": assert seed is None, "Specify a seed if not splitting train:test" else: assert seed in SEED_LIST self.seed = seed self.transform = transform self.target_transform = target_transform self.loader = loader self.class_names: List[str] = None """ After _load_metadata(), the class names will be loaded in order aligned with target index. """ super(_CLEARImage, self).__init__( root, data_name=data_name, download=download, verbose=True ) def _load_metadata(self) -> bool: if not super(_CLEARImage, self)._load_metadata(): print("CLEAR has not yet been downloaded") return False train_folder_path = self.root / "training_folder" if self.split == "all": filelist_folder_path = train_folder_path / "filelists" else: filelist_folder_path = ( train_folder_path / "testset_ratio_0.3" / f"split_{self.seed}" ) filelist_name = f"{self.split}.txt" self._paths_and_targets = [] for bucket_index in self.bucket_indices: f_path = filelist_folder_path / str(bucket_index) / filelist_name try: self._paths_and_targets.append(default_flist_reader(f_path)) except Exception as e: print(f"Error reading {f_path}") return False self.paths = [] self.targets = [] for path_and_target_list in self._paths_and_targets: for img_path, target in path_and_target_list: self.paths.append(img_path) self.targets.append(target) return True def get_paths_and_targets(self, root_appended=True): """Return self._paths_and_targets with root appended or not""" if not root_appended: return self._paths_and_targets else: paths_and_targets = [] for path_and_target_list in self._paths_and_targets: paths_and_targets.append([]) for img_path, target in path_and_target_list: paths_and_targets[-1].append((self.root / img_path, target)) return paths_and_targets def __getitem__(self, index): img_path = self.paths[index] target = self.targets[index] img = self.loader(str(self.root / img_path)) if self.transform is not None: img = self.transform(img) if self.target_transform is not None: target = self.target_transform(target) return img, target def __len__(self): return len(self.targets) class _CLEARFeature(CLEARDataset): """CLEAR Feature Dataset (base class for CLEARFeature)""" def __init__( self, root: Union[str, Path] = None, *, data_name: str = "clear10", download: bool = True, verbose: bool = True, split: str = "all", seed: int = None, feature_type: str = "moco_b0", target_transform=None, ): """ Creates an instance of the CLEAR dataset. This image dataset will contain samples from all buckets of CLEAR, so it is not intended for CL purposes. It simply download and unzip the CLEAR dataset. Tensors and targets for benchmark creation will be loaded in self.tensors_and_targets :param root: The directory where the dataset can be found or downloaded. Defaults to None, which means that the default location for str(data_name) will be used. :param data_name: Data module name with the google drive url and md5 :param download: If True, the dataset will be downloaded if needed. :param split: Choose from ['all', 'train', 'test']. If 'all', then return all data from all buckets. If 'train'/'test', then only return train/test data. :param seed: The random seed used for splitting the train:test into 7:3 If split=='all', then seed must be None (since no split is done) otherwise, choose from [0, 1, 2, 3, 4] :param feature_type: The type of features. For CLEAR10, choose from [ 'moco_b0', # Moco V2 ResNet50 pretrained on bucket 0 'moco_imagenet', # Moco V2 ResNet50 pretrained on Imagenet 'byol_imagenet', # BYOL ResNet50 pretrained on Imagenet 'imagenet', # ResNet50 pretrained on Imagenet ] :param target_transform: The transformations to apply to the Y values. """ self.split = split assert self.split in ["all", "train", "test"], "Invalid split option" if self.split == "all": assert seed is None, "Specify a seed if not splitting train:test" else: assert seed in SEED_LIST self.seed = seed self.feature_type = feature_type assert feature_type in CLEAR_FEATURE_TYPES[data_name] self.target_transform = target_transform super(_CLEARFeature, self).__init__( root, data_name=data_name, download=download, verbose=True ) def _load_metadata(self) -> bool: if not super(_CLEARFeature, self)._load_metadata(): print("CLEAR has not yet been downloaded") return False train_folder_path = self.root / "training_folder" feature_folder_path = train_folder_path / "features" / self.feature_type if self.split in ["train", "test"]: split_folder_path = ( train_folder_path / "testset_ratio_0.3" / f"split_{self.seed}" ) split_name = f"{self.split}_indices.json" else: split_name = None self.tensors_and_targets = [] for bucket_index in self.bucket_indices: f_path = feature_folder_path / str(bucket_index) / "all.pth" try: tensors, targets = torch.load(f_path) if split_name: indices_json = ( split_folder_path / str(bucket_index) / split_name ) chosen_indices = _load_json(indices_json) tensors = [tensors[i] for i in chosen_indices] targets = [targets[i] for i in chosen_indices] self.tensors_and_targets.append((tensors, targets)) except Exception as e: print(f"Error loading {f_path}") return False self.tensors = [] self.targets = [] for tensors, targets in self.tensors_and_targets: for tensor, target in zip(tensors, targets): self.tensors.append(tensor) self.targets.append(target) return True def __getitem__(self, index): tensor = self.tensors[index] target = self.targets[index] if self.target_transform is not None: target = self.target_transform(target) return tensor, target def __len__(self): return len(self.targets) if __name__ == "__main__": # this little example script can be used to visualize the first image # loaded from the dataset. from torch.utils.data.dataloader import DataLoader import matplotlib.pyplot as plt from torchvision import transforms import torch normalize = transforms.Normalize( mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225] ) transform = transforms.Compose( [ transforms.Resize(224), transforms.CenterCrop(224), transforms.ToTensor(), normalize, ] ) data_name = "clear10" root = f"../avalanche_datasets/{data_name}" if not os.path.exists(root): Path(root).mkdir(parents=True) clear_dataset_all = _CLEARImage( root=root, data_name=data_name, download=True, split="all", seed=None, transform=transform, ) clear_dataset_train = _CLEARImage( root=root, data_name=data_name, download=True, split="train", seed=0, transform=transform, ) clear_dataset_test = _CLEARImage( root=root, data_name=data_name, download=True, split="test", seed=0, transform=transform, ) print("clear10 size (all): ", len(clear_dataset_all)) print("clear10 size (train): ", len(clear_dataset_train)) print("clear10 size (test): ", len(clear_dataset_test)) clear_dataset_all_feature = _CLEARFeature( root=root, data_name=data_name, download=True, feature_type="moco_b0", split="all", seed=None, ) clear_dataset_train_feature = _CLEARFeature( root=root, data_name=data_name, download=True, feature_type="moco_b0", split="train", seed=0, ) clear_dataset_test_feature = _CLEARFeature( root=root, data_name=data_name, download=True, feature_type="moco_b0", split="test", seed=0, ) print("clear10 size (all features): ", len(clear_dataset_all_feature)) print("clear10 size (train features): ", len(clear_dataset_train_feature)) print("clear10 size (test features): ", len(clear_dataset_test_feature)) print("Classes are: ") for i, name in enumerate(clear_dataset_test.class_names): print(f"{i} : {name}") dataloader = DataLoader(clear_dataset_test_feature, batch_size=1) for batch_data in dataloader: x, y = batch_data print(x.size()) print(len(y)) break __all__ = ["CLEARDataset", "_CLEARFeature", "_CLEARImage", "SEED_LIST", "CLEAR_FEATURE_TYPES", "_CLEAR_DATA_SPLITS"]