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attack.py
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#!/usr/bin/env python
import argparse
import pathlib
import time
import numpy as np
import torch
import torch.nn.functional as F
import tqdm
from fvcore.common.checkpoint import Checkpointer
from pytorch_image_classification import (
apply_data_parallel_wrapper,
create_dataloader,
create_loss,
create_model,
get_default_config,
update_config,
)
from pytorch_image_classification.utils import (
AverageMeter,
create_logger,
get_rank,
)
from attacks import get_attack
def load_config():
parser = argparse.ArgumentParser()
parser.add_argument('--config', type=str, required=True)
parser.add_argument('options', default=None, nargs=argparse.REMAINDER)
args = parser.parse_args()
config = get_default_config()
config.merge_from_file(args.config)
config.merge_from_list(args.options)
update_config(config)
config.freeze()
return config
def evaluate(config, attack, model, test_loader, loss_func, logger):
device = torch.device(config.device)
model.eval()
loss_meter = AverageMeter()
correct_meter = AverageMeter()
start = time.time()
pred_raw_all = []
pred_prob_all = []
pred_label_all = []
with torch.no_grad():
for data, targets in tqdm.tqdm(test_loader):
data = data.to(device)
targets = targets.to(device)
adv_data=attack.run(data,targets,model)
outputs = model(adv_data)+attack.post_noise
loss = loss_func(outputs, targets)
pred_raw_all.append(outputs.cpu().numpy())
pred_prob_all.append(F.softmax(outputs, dim=1).cpu().numpy())
_, preds = torch.max(outputs, dim=1)
pred_label_all.append(preds.cpu().numpy())
loss_ = loss.item()
correct_ = preds.eq(targets).sum().item()
num = data.size(0)
loss_meter.update(loss_, num)
correct_meter.update(correct_, 1)
print(f"acc:{correct_meter.sum}")
accuracy = correct_meter.sum / len(test_loader.dataset)
elapsed = time.time() - start
logger.info(f'Elapsed {elapsed:.2f}')
logger.info(f'Loss {loss_meter.avg:.4f} Accuracy {accuracy:.4f}')
preds = np.concatenate(pred_raw_all)
probs = np.concatenate(pred_prob_all)
labels = np.concatenate(pred_label_all)
return preds, probs, labels, loss_meter.avg, accuracy
def main():
config = load_config()
if config.test.output_dir is None:
output_dir = pathlib.Path(config.test.checkpoint).parent
else:
output_dir = pathlib.Path(config.test.output_dir)
output_dir.mkdir(exist_ok=True, parents=True)
logger = create_logger(name=__name__, distributed_rank=get_rank())
model = create_model(config)
model = apply_data_parallel_wrapper(config, model)
checkpointer = Checkpointer(model=model,
save_dir=str(output_dir),
save_to_disk=get_rank() == 0)
checkpointer.load(config.test.checkpoint)
test_loader = create_dataloader(config, is_train=False)
_, test_loss = create_loss(config)
attack=get_attack(config)
preds, probs, labels, loss, acc = evaluate(config, attack, model, test_loader,
test_loss, logger)
result=attack.result()
query=result["average_num_queries"]
acc_by_attack=1-result["failure_rate"]
blacklight_detection_rate=result["blacklight_detection_rate"]
blacklight_coverage=result["blacklight_coverage"]
blacklight_query_to_detect=result["blacklight_query_to_detect"]
distance=result["distance"]
print(f"average query: {query}, attack acc: {acc_by_attack}, model acc: {acc}, "
f"blacklight_detection_rate: {blacklight_detection_rate}, blacklight_coverage: {blacklight_coverage}, blacklight_query_to_detect: {blacklight_query_to_detect} ")
output_path = output_dir / f'predictions.npz'
np.savez(output_path,
preds=preds,
probs=probs,
labels=labels,
loss=loss,
acc=acc,
query=query,
bl_detect_rate=blacklight_detection_rate,
bl_coverage=blacklight_coverage,
bl_q2detect=blacklight_query_to_detect,
distance=distance)
if __name__ == '__main__':
main()