Malicious attack inversion

src/configs/algo_config.py

@@ -361,6 +361,5 @@ def get_malicious_types(malicious_config_list: List[ConfigType]) -> Dict[str, st
     malicious_traditional_model_update_attack,
 ]
 
-
 default_config_list: List[ConfigType] = [traditional_fl]
 # default_config_list: List[ConfigType] = [fedstatic, fedstatic, fedstatic, fedstatic]

src/inversefed/data/data_processing.py

@@ -0,0 +1,209 @@
+"""Repeatable code parts concerning data loading."""
+
+
+import torch
+import torchvision
+import torchvision.transforms as transforms
+
+import os
+
+from ..consts import *
+
+from .data import _build_bsds_sr, _build_bsds_dn
+from .loss import Classification, PSNR
+
+
+def construct_dataloaders(dataset, defs, data_path='~/data', shuffle=True, normalize=True):
+    """Return a dataloader with given dataset and augmentation, normalize data?."""
+    path = os.path.expanduser(data_path)
+
+    if dataset == 'CIFAR10':
+        trainset, validset = _build_cifar10(path, defs.augmentations, normalize)
+        loss_fn = Classification()
+    elif dataset == 'CIFAR100':
+        trainset, validset = _build_cifar100(path, defs.augmentations, normalize)
+        loss_fn = Classification()
+    elif dataset == 'MNIST':
+        trainset, validset = _build_mnist(path, defs.augmentations, normalize)
+        loss_fn = Classification()
+    elif dataset == 'MNIST_GRAY':
+        trainset, validset = _build_mnist_gray(path, defs.augmentations, normalize)
+        loss_fn = Classification()
+    elif dataset == 'ImageNet':
+        trainset, validset = _build_imagenet(path, defs.augmentations, normalize)
+        loss_fn = Classification()
+    elif dataset == 'BSDS-SR':
+        trainset, validset = _build_bsds_sr(path, defs.augmentations, normalize, upscale_factor=3, RGB=True)
+        loss_fn = PSNR()
+    elif dataset == 'BSDS-DN':
+        trainset, validset = _build_bsds_dn(path, defs.augmentations, normalize, noise_level=25 / 255, RGB=False)
+        loss_fn = PSNR()
+    elif dataset == 'BSDS-RGB':
+        trainset, validset = _build_bsds_dn(path, defs.augmentations, normalize, noise_level=25 / 255, RGB=True)
+        loss_fn = PSNR()
+
+    if MULTITHREAD_DATAPROCESSING:
+        num_workers = min(torch.get_num_threads(), MULTITHREAD_DATAPROCESSING) if torch.get_num_threads() > 1 else 0
+    else:
+        num_workers = 0
+
+    trainloader = torch.utils.data.DataLoader(trainset, batch_size=min(defs.batch_size, len(trainset)),
+                                              shuffle=shuffle, drop_last=True, num_workers=num_workers, pin_memory=PIN_MEMORY)
+    validloader = torch.utils.data.DataLoader(validset, batch_size=min(defs.batch_size, len(trainset)),
+                                              shuffle=False, drop_last=False, num_workers=num_workers, pin_memory=PIN_MEMORY)
+
+    return loss_fn, trainloader, validloader
+
+
+def _build_cifar10(data_path, augmentations=True, normalize=True):
+    """Define CIFAR-10 with everything considered."""
+    # Load data
+    trainset = torchvision.datasets.CIFAR10(root=data_path, train=True, download=True, transform=transforms.ToTensor())
+    validset = torchvision.datasets.CIFAR10(root=data_path, train=False, download=True, transform=transforms.ToTensor())
+
+    if cifar10_mean is None:
+        data_mean, data_std = _get_meanstd(trainset)
+    else:
+        data_mean, data_std = cifar10_mean, cifar10_std
+
+    # Organize preprocessing
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        transforms.Normalize(data_mean, data_std) if normalize else transforms.Lambda(lambda x: x)])
+    if augmentations:
+        transform_train = transforms.Compose([
+            transforms.RandomCrop(32, padding=4),
+            transforms.RandomHorizontalFlip(),
+            transform])
+        trainset.transform = transform_train
+    else:
+        trainset.transform = transform
+    validset.transform = transform
+
+    return trainset, validset
+
+def _build_cifar100(data_path, augmentations=True, normalize=True):
+    """Define CIFAR-100 with everything considered."""
+    # Load data
+    trainset = torchvision.datasets.CIFAR100(root=data_path, train=True, download=True, transform=transforms.ToTensor())
+    validset = torchvision.datasets.CIFAR100(root=data_path, train=False, download=True, transform=transforms.ToTensor())
+
+    if cifar100_mean is None:
+        data_mean, data_std = _get_meanstd(trainset)
+    else:
+        data_mean, data_std = cifar100_mean, cifar100_std
+
+    # Organize preprocessing
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        transforms.Normalize(data_mean, data_std) if normalize else transforms.Lambda(lambda x: x)])
+    if augmentations:
+        transform_train = transforms.Compose([
+            transforms.RandomCrop(32, padding=4),
+            transforms.RandomHorizontalFlip(),
+            transform])
+        trainset.transform = transform_train
+    else:
+        trainset.transform = transform
+    validset.transform = transform
+
+    return trainset, validset
+
+
+def _build_mnist(data_path, augmentations=True, normalize=True):
+    """Define MNIST with everything considered."""
+    # Load data
+    trainset = torchvision.datasets.MNIST(root=data_path, train=True, download=True, transform=transforms.ToTensor())
+    validset = torchvision.datasets.MNIST(root=data_path, train=False, download=True, transform=transforms.ToTensor())
+
+    if mnist_mean is None:
+        cc = torch.cat([trainset[i][0].reshape(-1) for i in range(len(trainset))], dim=0)
+        data_mean = (torch.mean(cc, dim=0).item(),)
+        data_std = (torch.std(cc, dim=0).item(),)
+    else:
+        data_mean, data_std = mnist_mean, mnist_std
+
+    # Organize preprocessing
+    transform = transforms.Compose([
+        transforms.ToTensor(),
+        transforms.Normalize(data_mean, data_std) if normalize else transforms.Lambda(lambda x: x)])
+    if augmentations:
+        transform_train = transforms.Compose([
+            transforms.RandomCrop(28, padding=4),
+            transforms.RandomHorizontalFlip(),
+            transform])
+        trainset.transform = transform_train
+    else:
+        trainset.transform = transform
+    validset.transform = transform
+
+    return trainset, validset
+
+def _build_mnist_gray(data_path, augmentations=True, normalize=True):
+    """Define MNIST with everything considered."""
+    # Load data
+    trainset = torchvision.datasets.MNIST(root=data_path, train=True, download=True, transform=transforms.ToTensor())
+    validset = torchvision.datasets.MNIST(root=data_path, train=False, download=True, transform=transforms.ToTensor())
+
+    if mnist_mean is None:
+        cc = torch.cat([trainset[i][0].reshape(-1) for i in range(len(trainset))], dim=0)
+        data_mean = (torch.mean(cc, dim=0).item(),)
+        data_std = (torch.std(cc, dim=0).item(),)
+    else:
+        data_mean, data_std = mnist_mean, mnist_std
+
+    # Organize preprocessing
+    transform = transforms.Compose([
+        transforms.Grayscale(num_output_channels=1),
+        transforms.ToTensor(),
+        transforms.Normalize(data_mean, data_std) if normalize else transforms.Lambda(lambda x: x)])
+    if augmentations:
+        transform_train = transforms.Compose([
+            transforms.Grayscale(num_output_channels=1),
+            transforms.RandomCrop(28, padding=4),
+            transforms.RandomHorizontalFlip(),
+            transform])
+        trainset.transform = transform_train
+    else:
+        trainset.transform = transform
+    validset.transform = transform
+
+    return trainset, validset
+
+
+def _build_imagenet(data_path, augmentations=True, normalize=True):
+    """Define ImageNet with everything considered."""
+    # Load data
+    trainset = torchvision.datasets.ImageNet(root=data_path, split='train', transform=transforms.ToTensor())
+    validset = torchvision.datasets.ImageNet(root=data_path, split='val', transform=transforms.ToTensor())
+
+    if imagenet_mean is None:
+        data_mean, data_std = _get_meanstd(trainset)
+    else:
+        data_mean, data_std = imagenet_mean, imagenet_std
+
+    # Organize preprocessing
+    transform = transforms.Compose([
+        transforms.Resize(256),
+        transforms.CenterCrop(224),
+        transforms.ToTensor(),
+        transforms.Normalize(data_mean, data_std) if normalize else transforms.Lambda(lambda x : x)])
+    if augmentations:
+        transform_train = transforms.Compose([
+            transforms.RandomResizedCrop(224),
+            transforms.RandomHorizontalFlip(),
+            transforms.ToTensor(),
+            transforms.Normalize(data_mean, data_std) if normalize else transforms.Lambda(lambda x : x)])
+        trainset.transform = transform_train
+    else:
+        trainset.transform = transform
+    validset.transform = transform
+
+    return trainset, validset
+
+
+def _get_meanstd(dataset):
+    cc = torch.cat([trainset[i][0].reshape(3, -1) for i in range(len(trainset))], dim=1)
+    data_mean = torch.mean(cc, dim=1).tolist()
+    data_std = torch.std(cc, dim=1).tolist()
+    return data_mean, data_std

src/inversefed/data/loss.py

@@ -0,0 +1,114 @@
+"""Define various loss functions and bundle them with appropriate metrics."""
+
+import torch
+import numpy as np
+
+
+class Loss:
+    """Abstract class, containing necessary methods.
+
+    Abstract class to collect information about the 'higher-level' loss function, used to train an energy-based model
+    containing the evaluation of the loss function, its gradients w.r.t. to first and second argument and evaluations
+    of the actual metric that is targeted.
+
+    """
+
+    def __init__(self):
+        """Init."""
+        pass
+
+    def __call__(self, reference, argmin):
+        """Return l(x, y)."""
+        raise NotImplementedError()
+        return value, name, format
+
+    def metric(self, reference, argmin):
+        """The actually sought metric."""
+        raise NotImplementedError()
+        return value, name, format
+
+
+class PSNR(Loss):
+    """A classical MSE target.
+
+    The minimized criterion is MSE Loss, the actual metric is average PSNR.
+    """
+
+    def __init__(self):
+        """Init with torch MSE."""
+        self.loss_fn = torch.nn.MSELoss(size_average=None, reduce=None, reduction='mean')
+
+    def __call__(self, x=None, y=None):
+        """Return l(x, y)."""
+        name = 'MSE'
+        format = '.6f'
+        if x is None:
+            return name, format
+        else:
+            value = 0.5 * self.loss_fn(x, y)
+            return value, name, format
+
+    def metric(self, x=None, y=None):
+        """The actually sought metric."""
+        name = 'avg PSNR'
+        format = '.3f'
+        if x is None:
+            return name, format
+        else:
+            value = self.psnr_compute(x, y)
+            return value, name, format
+
+    @staticmethod
+    def psnr_compute(img_batch, ref_batch, batched=False, factor=1.0):
+        """Standard PSNR."""
+        def get_psnr(img_in, img_ref):
+            mse = ((img_in - img_ref)**2).mean()
+            if mse > 0 and torch.isfinite(mse):
+                return (10 * torch.log10(factor**2 / mse)).item()
+            elif not torch.isfinite(mse):
+                return float('nan')
+            else:
+                return float('inf')
+
+        if batched:
+            psnr = get_psnr(img_batch.detach(), ref_batch)
+        else:
+            [B, C, m, n] = img_batch.shape
+            psnrs = []
+            for sample in range(B):
+                psnrs.append(get_psnr(img_batch.detach()[sample, :, :, :], ref_batch[sample, :, :, :]))
+            psnr = np.mean(psnrs)
+
+        return psnr
+
+
+class Classification(Loss):
+    """A classical NLL loss for classification. Evaluation has the softmax baked in.
+
+    The minimized criterion is cross entropy, the actual metric is total accuracy.
+    """
+
+    def __init__(self):
+        """Init with torch MSE."""
+        self.loss_fn = torch.nn.CrossEntropyLoss(weight=None, size_average=None, ignore_index=-100,
+                                                 reduce=None, reduction='mean')
+
+    def __call__(self, x=None, y=None):
+        """Return l(x, y)."""
+        name = 'CrossEntropy'
+        format = '1.5f'
+        if x is None:
+            return name, format
+        else:
+            value = self.loss_fn(x, y)
+            return value, name, format
+
+    def metric(self, x=None, y=None):
+        """The actually sought metric."""
+        name = 'Accuracy'
+        format = '6.2%'
+        if x is None:
+            return name, format
+        else:
+            value = (x.data.argmax(dim=1) == y).sum().float() / y.shape[0]
+            return value.detach(), name, format

src/utils/model_utils.py

@@ -13,8 +13,6 @@
 import yolo
 from utils.types import ConfigType
 
-from inversefed.reconstruction_algorithms import loss_steps
-
 class ModelUtils:
     def __init__(self, device: torch.device, config: ConfigType) -> None:
         self.device = device
@@ -197,6 +195,7 @@ def train_classification(
                 print("here, applying softmax")
                 output = nn.functional.log_softmax(output, dim=1)  # type: ignore
             if kwargs.get("gia", False):
+                from inversefed.reconstruction_algorithms import loss_steps
                 # Sum the loss and create gradient graph like in loss_steps
                 # Use modified loss_steps function that returns loss
                 model.eval()