def main(args):
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
config = [('conv2d', [64, 1, 3, 3, 2, 0]), ('relu', [True]), ('bn', [64]),
('conv2d', [64, 64, 3, 3, 2, 0]), ('relu', [True]), ('bn', [64]),
('conv2d', [64, 64, 3, 3, 2, 0]), ('relu', [True]), ('bn', [64]),
('conv2d', [64, 64, 2, 2, 1, 0]), ('relu', [True]), ('bn', [64]),
('flatten', []), ('linear', [args.n_way, 256])]
#device = torch.device('cuda')
device = torch.device('cpu')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
db_train = SvhnNShot(batchsz=args.task_num,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
imgsz=args.imgsz)
for step in range(args.epoch):
x_spt, y_spt, x_qry, y_qry = db_train.next()
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).to(device)
# set traning=True to update running_mean, running_variance, bn_weights, bn_bias
accs = maml(x_spt, y_spt.long(), x_qry, y_qry.long())
if step % 50 == 0:
print('step:', step, '\ttraining acc:', accs)
if step % 500 == 0:
accs = []
for _ in range(1000 // args.task_num):
# test
x_spt, y_spt, x_qry, y_qry = db_train.next('test')
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).to(device)
# split to single task each time
for x_spt_one, y_spt_one, x_qry_one, y_qry_one in zip(
x_spt, y_spt, x_qry, y_qry):
test_acc = maml.finetunning(x_spt_one, y_spt_one.long(),
x_qry_one, y_qry_one.long())
accs.append(test_acc)
# [b, update_step+1]
accs = np.array(accs).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
def main():
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
config = [('conv2d', [32, 3, 3, 3, 1, 0]), ('relu', [True]), ('bn', [32]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]), ('bn', [32]), ('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]), ('relu', [True]), ('bn', [32]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]), ('bn', [32]), ('max_pool2d', [2, 1, 0]),
('flatten', []), ('linear', [args.n_way, 32 * 5 * 5])]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
ckpt_dir = "./checkpoint_miniimage.pth"
print("Load trained model")
ckpt = torch.load(ckpt_dir)
maml.load_state_dict(ckpt['model'])
mini_test = MiniImagenet("F:\\ACV_project\\MAML-Pytorch\\miniimagenet\\",
mode='test',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=1,
resize=args.imgsz)
db_test = DataLoader(mini_test,
1,
shuffle=True,
num_workers=1,
pin_memory=True)
accs_all_test = []
#count = 0
#print("Test_loader",db_test)
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
def main():
torch.manual_seed(121)
torch.cuda.manual_seed_all(121)
np.random.seed(121)
nshot = SinwaveNShot(all_numbers_class=2000,
batch_size=20,
n_way=5,
k_shot=5,
k_query=15,
root='data')
maml = Meta(hid_dim=64, meta_lr=1e-3, update_lr=0.004)
for step in range(10000):
x_spt, y_spt, x_qry, y_qry, param_spt, param_qry = nshot.next('train')
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt), torch.from_numpy(
y_spt), torch.from_numpy(x_qry), torch.from_numpy(y_qry)
loss = maml(x_spt, y_spt, x_qry, y_qry)
if step % 20 == 0:
print('step:', step, '\ttraining loss:', loss)
if step % 500 == 0:
loss = []
for _ in range(1000 // 20):
# test
x_spt, y_spt, x_qry, y_qry, param_spt, param_qry = nshot.next(
'test')
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt), torch.from_numpy(y_spt), \
torch.from_numpy(x_qry), torch.from_numpy(y_qry)
# split to single task each time
for x_spt_one, y_spt_one, x_qry_one, y_qry_one, param_spt_one, param_qry_onein in \
zip(x_spt, y_spt, x_qry, y_qry, param_spt, param_qry):
test_acc = maml.finetunning(x_spt_one, y_spt_one,
x_qry_one, y_qry_one,
param_spt_one, param_qry_onein)
loss.append(test_acc)
# [b, update_step+1]
loss = np.array(loss).mean(axis=0).astype(np.float16)
print('Test loss:', loss)
def main():
print(args)
device = torch.device('cuda')
maml = Meta(args).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
trainset = Gen(args.task_num, args.k_spt, args.k_qry)
testset = Gen(args.task_num, args.k_spt, args.k_qry * 10)
for epoch in range(args.epoch):
ind = [i for i in range(trainset.xs.shape[0])]
np.random.shuffle(ind)
xs, ys = torch.Tensor(trainset.xs[ind]).to(device), torch.Tensor(
trainset.ys[ind]).to(device)
xq, yq = torch.Tensor(trainset.xq[ind]).to(device), torch.Tensor(
trainset.yq[ind]).to(device)
maml.train()
loss = maml(xs, ys, xq, yq, epoch)
print('Epoch: {} Initial loss: {} Train loss: {}'.format(
epoch, loss[0] / args.task_num, loss[-1] / args.task_num))
if (epoch + 1) % 50 == 0:
print("Evaling the model...")
torch.save(maml.state_dict(), 'save.pt')
# del(maml)
# maml = Meta(args).to(device)
# maml.load_state_dict(torch.load('save.pt'))
maml.eval()
i = random.randint(0, testset.xs.shape[0] - 1)
xs, ys = torch.Tensor(testset.xs[i]).to(device), torch.Tensor(
testset.ys[i]).to(device)
xq, yq = torch.Tensor(testset.xq[i]).to(device), torch.Tensor(
testset.yq[i]).to(device)
losses, losses_q, logits_q, _ = maml.finetunning(xs, ys, xq, yq)
print('Epoch: {} Initial loss: {} Test loss: {}'.format(
epoch, losses_q[0], losses_q[-1]))
def main():
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
config = [
('conv2d', [32, 3, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 1, 0]),
('flatten', []),
('linear', [args.n_way, 32 * 5 * 5])
]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
# batchsz here means total episode number
mini = MiniImagenet('F:\\ACV_project\\MAML-Pytorch\\miniimagenet\\', mode='train', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000, resize=args.imgsz)
mini_test = MiniImagenet('F:\\ACV_project\\MAML-Pytorch\\miniimagenet\\', mode='test', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100, resize=args.imgsz)
ckpt_dir = "./model/"
for epoch in range(args.epoch//10000):
# fetch meta_batchsz num of episode each time
db = DataLoader(mini, args.task_num, shuffle=True, num_workers=1, pin_memory=True)
for step, (x_spt, y_spt, x_qry, y_qry) in enumerate(db):
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(device), x_qry.to(device), y_qry.to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 30 == 0:
print('step:', step, '\ttraining acc:', accs)
if step % 500 == 0: # evaluation
db_test = DataLoader(mini_test, 1, shuffle=True, num_workers=1, pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
# save checkpoints
os.makedirs(ckpt_dir, exist_ok=True)
print('Saving the model as a checkpoint...')
torch.save({'epoch': epoch, 'Steps': step, 'model': maml.state_dict()}, os.path.join(ckpt_dir, 'checkpoint.pth'))
def main():
mem_usage = memory_usage(-1, interval=.5, timeout=1)
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
root = args.data_dir
feat = np.load(root + 'features.npy', allow_pickle=True)
with open(root + '/graph_dgl.pkl', 'rb') as f:
dgl_graph = pickle.load(f)
if args.task_setup == 'Disjoint':
with open(root + 'label.pkl', 'rb') as f:
info = pickle.load(f)
elif args.task_setup == 'Shared':
if args.task_mode == 'True':
root = root + '/task' + str(args.task_n) + '/'
with open(root + 'label.pkl', 'rb') as f:
info = pickle.load(f)
total_class = len(np.unique(np.array(list(info.values()))))
print('There are {} classes '.format(total_class))
if args.task_setup == 'Disjoint':
labels_num = args.n_way
elif args.task_setup == 'Shared':
labels_num = total_class
if len(feat.shape) == 2:
# single graph, to make it compatible to multiple graph retrieval.
feat = [feat]
config = [('GraphConv', [feat[0].shape[1], args.hidden_dim])]
if args.h > 1:
config = config + [('GraphConv', [args.hidden_dim, args.hidden_dim])
] * (args.h - 1)
config = config + [('Linear', [args.hidden_dim, labels_num])]
if args.link_pred_mode == 'True':
config.append(('LinkPred', [True]))
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
max_acc = 0
model_max = copy.deepcopy(maml)
db_train = Subgraphs(root,
'train',
info,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=args.batchsz,
args=args,
adjs=dgl_graph,
h=args.h)
db_val = Subgraphs(root,
'val',
info,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100,
args=args,
adjs=dgl_graph,
h=args.h)
db_test = Subgraphs(root,
'test',
info,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100,
args=args,
adjs=dgl_graph,
h=args.h)
print('------ Start Training ------')
s_start = time.time()
max_memory = 0
for epoch in range(args.epoch):
db = DataLoader(db_train,
args.task_num,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True,
collate_fn=collate)
s_f = time.time()
for step, (x_spt, y_spt, x_qry, y_qry, c_spt, c_qry, n_spt, n_qry,
g_spt, g_qry) in enumerate(db):
nodes_len = 0
if step >= 1:
data_loading_time = time.time() - s_r
else:
data_loading_time = time.time() - s_f
s = time.time()
# x_spt: a list of #task_num tasks, where each task is a mini-batch of k-shot * n_way subgraphs
# y_spt: a list of #task_num lists of labels. Each list is of length k-shot * n_way int.
nodes_len += sum([sum([len(j) for j in i]) for i in n_spt])
accs = maml(x_spt, y_spt, x_qry, y_qry, c_spt, c_qry, n_spt, n_qry,
g_spt, g_qry, feat)
max_memory = max(max_memory,
float(psutil.virtual_memory().used / (1024**3)))
if step % args.train_result_report_steps == 0:
print('Epoch:', epoch + 1, ' Step:', step, ' training acc:',
str(accs[-1])[:5], ' time elapsed:',
str(time.time() - s)[:5], ' data loading takes:',
str(data_loading_time)[:5], ' Memory usage:',
str(float(psutil.virtual_memory().used / (1024**3)))[:5])
s_r = time.time()
# validation per epoch
db_v = DataLoader(db_val,
1,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True,
collate_fn=collate)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry, c_spt, c_qry, n_spt, n_qry, g_spt, g_qry in db_v:
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry, c_spt, c_qry,
n_spt, n_qry, g_spt, g_qry, feat)
accs_all_test.append(accs)
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Epoch:', epoch + 1, ' Val acc:', str(accs[-1])[:5])
if accs[-1] > max_acc:
max_acc = accs[-1]
model_max = copy.deepcopy(maml)
db_t = DataLoader(db_test,
1,
shuffle=True,
num_workers=args.num_workers,
pin_memory=True,
collate_fn=collate)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry, c_spt, c_qry, n_spt, n_qry, g_spt, g_qry in db_t:
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry, c_spt, c_qry,
n_spt, n_qry, g_spt, g_qry, feat)
accs_all_test.append(accs)
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', str(accs[1])[:5])
for x_spt, y_spt, x_qry, y_qry, c_spt, c_qry, n_spt, n_qry, g_spt, g_qry in db_t:
accs = model_max.finetunning(x_spt, y_spt, x_qry, y_qry, c_spt, c_qry,
n_spt, n_qry, g_spt, g_qry, feat)
accs_all_test.append(accs)
#torch.save(model_max.state_dict(), './model.pt')
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Early Stopped Test acc:', str(accs[-1])[:5])
print('Total Time:', str(time.time() - s_start)[:5])
print('Max Momory:', str(max_memory)[:5])
def main():
#print(args)
TARGET_MODEL = 3
config = [
('conv2d', [16, 1, 3, 3, 1, 1]),
('relu', [True]),
('bn', [16]),
('conv2d', [32, 16, 4, 4, 2, 1]),
('relu', [True]),
('bn', [32]),
('conv2d', [64, 32, 4, 4, 2, 1]),
('relu', [True]),
('bn', [64]),
('conv2d', [64, 64, 4, 4, 2, 1]),
('relu', [True]),
('bn', [64]),
('convt2d', [64, 32, 3, 3, 2, 0]),
('relu', [True]),
('bn', [32]),
('convt2d', [32, 16, 4, 4, 2, 1]),
('relu', [True]),
('bn', [16]),
('convt2d', [16, 8, 4, 4, 2, 1]),
('relu', [True]),
('bn', [8]),
('convt2d', [8, 1, 3, 3, 1, 1]),
]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
#print(maml)
#print('Total trainable tensors:', num)
# initiate different datasets
minis = []
for i in range(args.task_num):
path = osp.join("./zoo_cw_grad_mnist/train", MODELS[i] + "_mnist.npy")
mini = mnist(path,
mode='train',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100,
resize=args.imgsz)
db = DataLoader(mini, args.batchsize, shuffle=True, num_workers=0, pin_memory=True)
minis.append(db)
path_test = osp.join("./zoo_cw_grad_mnist/test", MODELS[TARGET_MODEL] + "_mnist.npy")
mini_test = mnist(path_test,
mode='test',
n_way=1,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100,
resize=args.imgsz)
mini_test = DataLoader(mini_test, 10, shuffle=True, num_workers=0, pin_memory=True)
# start training
step_number = len(minis[0])
test_step_number = len(mini_test)
BEST_ACC = 1.0
target_model = get_target_model(TARGET_MODEL).to(device)
def save_model(model,acc):
model_file_path = './checkpoint/mnist'
if not os.path.exists(model_file_path):
os.makedirs(model_file_path)
file_name = str(acc) + 'mnist_'+ MODELS[TARGET_MODEL] + '.pt'
save_model_path = os.path.join(model_file_path, file_name)
torch.save(model.state_dict(), save_model_path)
def load_model(model,acc):
model_checkpoint_path = './checkpoint/mnist/' + str(acc) + 'mnist_' + MODELS[TARGET_MODEL] + '.pt'
assert os.path.exists(model_checkpoint_path)
model.load_state_dict(torch.load(model_checkpoint_path))
return model
for epoch in range(args.epoch//100):
minis_iter = []
for i in range(len(minis)):
minis_iter.append(iter(minis[i]))
mini_test_iter = iter(mini_test)
if args.resume:
maml = load_model(maml,"0.7231071")
for step in range(step_number):
batch_data = []
for each in minis_iter:
batch_data.append(each.next())
accs = maml(batch_data, device)
if (step + 1) % step_number == 0:
print('Training acc:', accs)
if accs[0] < BEST_ACC:
BEST_ACC = accs[0]
save_model(maml, BEST_ACC)
if (epoch + 1) % 15 == 0 and step ==0: # evaluation
accs_all_test = []
for i in range(3):
test_data = mini_test_iter.next()
accs = maml.finetunning(test_data, target_model, device)
accs_all_test.append(accs)
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
def main():
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
maml = Meta(args, STSTNet()).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
# batchsz here means total episode number
mini = MiniImagenet('/home/lf/miniImagenet/',
mode='train',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000,
resize=args.imgsz)
mini_test = MiniImagenet('/home/lf/miniImagenet/',
mode='test',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100,
resize=args.imgsz)
for epoch in range(args.epoch // 10000):
# fetch meta_batchsz num of episode each time
db = DataLoader(mini,
args.task_num,
shuffle=True,
num_workers=1,
pin_memory=True)
for step, (x_spt, y_spt, x_qry, y_qry) in tqdm(enumerate(db)):
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(
device), x_qry.to(device), y_qry.to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 30 == 0:
print('step:', step, '\ttraining acc:', accs)
if step % 500 == 0: # evaluation
db_test = DataLoader(mini_test,
1,
shuffle=True,
num_workers=1,
pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
torch.save(maml.net, 'maml_ststnet.pth')
def main():
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
config = [
('conv2d', [32, 3, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 1, 0]),
('flatten', []),
('linear', [args.n_way, 32 * 5 * 5])
]
cuda = 'cuda:' + args.gpu_index
device = torch.device(cuda)
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
# print(maml)
print('Total trainable tensors:', num)
if args.mode == 0:
mode_val_test = 'val'
train = 'train'
else:
mode_val_test = 'test'
train = 'train_ts'
# batchsz here means total episode number
mini = MiniImagenet('../flower/', mode=train, n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000, resize=args.imgsz, cross_val_idx=args.cross_val_idx)
mini_test = MiniImagenet('../flower/', mode=mode_val_test, n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100, resize=args.imgsz, cross_val_idx=args.cross_val_idx)
accs_list_tr = []
accs_list_ts = []
for epoch in range(args.epoch//10000):
# fetch meta_batchsz num of episode each time
db = DataLoader(mini, args.task_num, shuffle=True, num_workers=1, pin_memory=True)
for step, (x_spt, y_spt, x_qry, y_qry) in enumerate(db):
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(device), x_qry.to(device), y_qry.to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 30 == 0:
print('step:', step, '\ttraining acc:', accs)
accs_list_tr.append(accs)
if step % 500 == 0 or (step == 10000//args.task_num - 1) & (epoch == range(args.epoch//10000)[-1]): # evaluation
db_test = DataLoader(mini_test, 1, shuffle=True, num_workers=1, pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('step:', step, '\ttest acc:', accs)
accs_list_ts.append(accs)
if (step == 10000//args.task_num - 1) & (epoch == range(args.epoch//10000)[-1]):
with open('acc_cv2/natural2_' + mode_val_test + '(task_num_' + str(args.task_num) + ').txt', mode='a') as f:
f.write(str(accs[-1]) + ',')
def main(args):
if not os.path.exists('./logs'):
os.mkdir('./logs')
logfile = os.path.sep.join(('.', 'logs', f'omniglot_way[{args.n_way}]_shot[{args.k_spt}].json'))
if args.write_log:
log_fp = open(logfile, 'wb')
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
config = [
('conv2d', [64, 1, 3, 3, 2, 0]),
('relu', [True]),
('bn', [64]),
('conv2d', [64, 64, 3, 3, 2, 0]),
('relu', [True]),
('bn', [64]),
('conv2d', [64, 64, 3, 3, 2, 0]),
('relu', [True]),
('bn', [64]),
('conv2d', [64, 64, 2, 2, 1, 0]),
('relu', [True]),
('bn', [64]),
('flatten', []),
('linear', [args.n_way, 64])
]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
path = os.sep.join((os.path.dirname(__file__), 'dataset', 'omniglot'))
db_train = OmniglotNShot(path,
batchsz=args.task_num,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
imgsz=args.imgsz)
for step in range(args.epoch):
# 获取一定的 epoch 数据. 在omniglot NShot类里写的是
x_spt, y_spt, x_qry, y_qry = db_train.next()
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).to(device)
# set traning=True to update running_mean, running_variance, bn_weights, bn_bias
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 50 == 0:
print('step:', step, '\ttraining acc:', accs)
if step % 500 == 0:
accs = []
for _ in range(1000 // args.task_num):
# test
x_spt, y_spt, x_qry, y_qry = db_train.next('test')
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).to(device)
# split to single task each time
for x_spt_one, y_spt_one, x_qry_one, y_qry_one in zip(x_spt, y_spt, x_qry, y_qry):
test_acc = maml.finetunning(x_spt_one, y_spt_one, x_qry_one, y_qry_one)
accs.append(test_acc)
# [b, update_step+1]
accs = np.array(accs).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
def main(args):
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
device = torch.device('cuda')
config = []
if args.arch == "Unet":
for block in range(args.NUM_DOWN_CONV):
out_channels = (2**block) * args.HIDDEN_DIM
if (block == 0):
config += [(
'conv2d', [out_channels, args.imgc, 3, 3, 1, 1]
) # out_c, in_c, k_h, k_w, stride, padding, also only conv, without bias
]
else:
config += [
('conv2d', [out_channels, out_channels // 2, 3, 3, 1,
1]), # out_c, in_c, k_h, k_w, stride, padding
]
config += [
('leakyrelu',
[0.2, False]), # alpha; if true then executes relu in place
('bn', [out_channels])
]
config += [('conv2d', [out_channels, out_channels, 3, 3, 1, 1]),
('leakyrelu', [0.2, False]), ('bn', [out_channels])]
config += [('conv2d', [out_channels, out_channels, 3, 3, 1, 1]),
('leakyrelu', [0.2, False]), ('bn', [out_channels])]
config += [('max_pool2d', [2, 2,
0])] # kernel_size, stride, padding
for block in range(args.NUM_DOWN_CONV - 1):
out_channels = (2**(args.NUM_DOWN_CONV - block -
2)) * args.HIDDEN_DIM
in_channels = out_channels * 3
config += [('upsample', [2])]
config += [('conv2d', [out_channels, in_channels, 3, 3, 1, 1]),
('leakyrelu', [0.2, False]), ('bn', [out_channels])]
config += [('conv2d', [out_channels, out_channels, 3, 3, 1, 1]),
('leakyrelu', [0.2, False]), ('bn', [out_channels])]
config += [('conv2d', [out_channels, out_channels, 3, 3, 1, 1]),
('leakyrelu', [0.2, False]), ('bn', [out_channels])]
config += [
('conv2d_b', [args.outc, args.HIDDEN_DIM, 3, 3, 1, 1])
] # all the conv2d before are without bias, and this conv_b is with bias
else:
raise ("architectures other than Unet hasn't been added!!")
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
# print(maml)
for name, param in maml.named_parameters():
print(name, param.size())
print('Total trainable tensors:', num)
SUMMARY_INTERVAL = 5
TEST_PRINT_INTERVAL = SUMMARY_INTERVAL * 5
ITER_SAVE_INTERVAL = 300
EPOCH_SAVE_INTERVAL = 5
model_path = "/scratch/users/chenkaim/pytorch-models/pytorch_" + args.model_name + "_k_shot_" + str(
args.k_spt) + "_task_num_" + str(args.task_num) + "_meta_lr_" + str(
args.meta_lr) + "_inner_lr_" + str(
args.update_lr) + "_num_inner_updates_" + str(args.update_step)
if not os.path.isdir(model_path):
os.mkdir(model_path)
start_epoch = 0
if (args.continue_train):
print("Restoring weights from ",
model_path + "/epoch_" + str(args.continue_epoch) + ".pt")
checkpoint = torch.load(model_path + "/epoch_" +
str(args.continue_epoch) + ".pt")
maml = checkpoint['model']
maml.lr_scheduler = checkpoint['lr_scheduler']
maml.meta_optim = checkpoint['optimizer']
start_epoch = args.continue_epoch
db = RCWA_data_loader(batchsz=args.task_num,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
imgsz=args.imgsz,
data_folder=args.data_folder)
for step in range(start_epoch, args.epoch):
print("epoch: ", step)
if step % EPOCH_SAVE_INTERVAL == 0:
checkpoint = {
'epoch': step,
'model': maml,
'optimizer': maml.meta_optim,
'lr_scheduler': maml.lr_scheduler
}
torch.save(checkpoint, model_path + "/epoch_" + str(step) + ".pt")
for itr in range(
int(0.7 * db.total_data_samples /
((args.k_spt + args.k_qry) * args.task_num))):
x_spt, y_spt, x_qry, y_qry = db.next()
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).to(device)
# set traning=True to update running_mean, running_variance, bn_weights, bn_bias
accs, loss_q = maml(x_spt, y_spt, x_qry, y_qry)
if itr % SUMMARY_INTERVAL == 0:
print_str = "Iteration %d: pre-inner-loop train accuracy: %.5f, post-iner-loop test accuracy: %.5f, train_loss: %.5f" % (
itr, accs[0], accs[-1], loss_q)
print(print_str)
if itr % TEST_PRINT_INTERVAL == 0:
accs = []
for _ in range(10):
# test
x_spt, y_spt, x_qry, y_qry = db.next('test')
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).to(device)
# split to single task each time
for x_spt_one, y_spt_one, x_qry_one, y_qry_one in zip(
x_spt, y_spt, x_qry, y_qry):
test_acc = maml.finetunning(x_spt_one, y_spt_one,
x_qry_one, y_qry_one)
accs.append(test_acc)
# [b, update_step+1]
accs = np.array(accs).mean(axis=0).astype(np.float16)
print(
'Meta-validation pre-inner-loop train accuracy: %.5f, meta-validation post-inner-loop test accuracy: %.5f'
% (accs[0], accs[-1]))
maml.lr_scheduler.step()
def main():
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
config = [('conv2d', [32, 3, 3, 3, 1, 0]), ('relu', [True]), ('bn', [32]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]), ('bn', [32]), ('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]), ('relu', [True]), ('bn', [32]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]), ('bn', [32]), ('max_pool2d', [2, 1, 0]),
('flatten', []), ('linear', [args.n_way, 32 * 5 * 5])]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
# batchsz here means total episode number
mini = MiniImagenet(
'/mnt/aitrics_ext/ext01/yanbin/MAML-Pytorch/data/miniImagenet/',
mode='train',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000,
resize=args.imgsz)
mini_val = MiniImagenet(
'/mnt/aitrics_ext/ext01/yanbin/MAML-Pytorch/data/miniImagenet/',
mode='val',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=600,
resize=args.imgsz)
mini_test = MiniImagenet(
'/mnt/aitrics_ext/ext01/yanbin/MAML-Pytorch/data/miniImagenet/',
mode='test',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=600,
resize=args.imgsz)
best_acc = 0.0
if not os.path.exists('ckpt/{}'.format(args.exp)):
os.mkdir('ckpt/{}'.format(args.exp))
for epoch in range(args.epoch // 10000):
# fetch meta_batchsz num of episode each time
db = DataLoader(mini,
args.task_num,
shuffle=True,
num_workers=1,
pin_memory=True)
for step, (x_spt, y_spt, x_qry, y_qry) in enumerate(db):
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(
device), x_qry.to(device), y_qry.to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 500 == 0:
print('step:', step, '\ttraining acc:', accs)
if step % 1000 == 0: # evaluation
db_val = DataLoader(mini_val,
1,
shuffle=True,
num_workers=1,
pin_memory=True)
accs_all_val = []
for x_spt, y_spt, x_qry, y_qry in db_val:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_val.append(accs)
mean, std, ci95 = cal_conf(np.array(accs_all_val))
print('Val acc:{}, std:{}. ci95:{}'.format(
mean[-1], std[-1], ci95[-1]))
if mean[-1] > best_acc or step % 5000 == 0:
best_acc = mean[-1]
torch.save(
maml.state_dict(),
'ckpt/{}/model_e{}s{}_{:.4f}.pkl'.format(
args.exp, epoch, step, best_acc))
with open('ckpt/' + args.exp + '/val.txt', 'a') as f:
print(
'val epoch {}, step {}: acc_val:{:.4f}, ci95:{:.4f}'
.format(epoch, step, best_acc, ci95[-1]),
file=f)
## Test
db_test = DataLoader(mini_test,
1,
shuffle=True,
num_workers=1,
pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
mean, std, ci95 = cal_conf(np.array(accs_all_test))
print('Test acc:{}, std:{}, ci95:{}'.format(
mean[-1], std[-1], ci95[-1]))
with open('ckpt/' + args.exp + '/test.txt', 'a') as f:
print(
'test epoch {}, step {}: acc_test:{:.4f}, ci95:{:.4f}'
.format(epoch, step, mean[-1], ci95[-1]),
file=f)
def main(args):
config = [('conv2d', [64, 1, 3, 3, 2, 0]), ('relu', [True]), ('bn', [64]),
('conv2d', [64, 64, 3, 3, 2, 0]), ('relu', [True]), ('bn', [64]),
('conv2d', [64, 64, 3, 3, 2, 0]), ('relu', [True]), ('bn', [64]),
('conv2d', [64, 64, 2, 2, 1, 0]), ('relu', [True]), ('bn', [64]),
('flatten', []), ('linear', [args.n_way, 64])]
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
maml = Meta(args, config, device).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print('Total trainable tensors:', num)
db_train = OmniglotNShot('./',
batchsz=args.task_num,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
imgsz=args.imgsz)
for step in range(args.epoch):
x_spt, y_spt, x_qry, y_qry = db_train.next()
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).long().to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).long().to(device)
# set traning=True to update running_mean, running_variance, bn_weights, bn_bias
accs = maml(x_spt, y_spt, x_qry, y_qry)
print('trainstep:', step, '\ttraining acc:', accs)
if (step + 1) % 500 == 0:
accs = []
for _ in range(1000 // args.task_num):
# test
x_spt, y_spt, x_qry, y_qry = db_train.next('test')
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).long().to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).long().to(device)
# split to single task each time
for x_spt_one, y_spt_one, x_qry_one, y_qry_one in zip(
x_spt, y_spt, x_qry, y_qry):
test_acc = maml.finetunning(x_spt_one, y_spt_one,
x_qry_one, y_qry_one)
accs.append(test_acc)
# [b, update_step+1]
accs = np.array(accs).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
##############################
for i in range(args.prune_iteration):
# prune
print("the {}th prune step".format(i))
x_spt, y_spt, x_qry, y_qry = db_train.getHoleTrain()
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).long().to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).long().to(device)
maml.prune(x_spt, y_spt, x_qry, y_qry, args.prune_number_one_epoch,
args.max_prune_number)
# fine-tuning
print("start finetuning....")
finetune_epoch = args.finetune_epoch
finetune_epoch = finetune_epoch * (2 if i == args.prune_iteration -
1 else 1)
for step in range(args.finetune_epoch):
x_spt, y_spt, x_qry, y_qry = db_train.next()
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).long().to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).long().to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry, finetune=True)
print('finetune step:', step, '\ttraining acc:', accs)
# print the test accuracy after pruning
print("start testing....")
accs = []
for _ in range(1000 // args.task_num):
# test
x_spt, y_spt, x_qry, y_qry = db_train.next('test')
x_spt, y_spt, x_qry, y_qry = torch.from_numpy(x_spt).to(device), torch.from_numpy(y_spt).long().to(device), \
torch.from_numpy(x_qry).to(device), torch.from_numpy(y_qry).long().to(device)
# split to single task each time
for x_spt_one, y_spt_one, x_qry_one, y_qry_one in zip(
x_spt, y_spt, x_qry, y_qry):
test_acc = maml.finetunning(x_spt_one, y_spt_one, x_qry_one,
y_qry_one)
accs.append(test_acc)
# [b, update_step+1]
accs = np.array(accs).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
def main():
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
#np.random.seed(222)
config = [('conv2d', [32, 3, 3, 3, 1, 1]), ('bn', [32]), ('relu', [True]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 1]),
('bn', [32]), ('relu', [True]), ('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 1]), ('bn', [32]), ('relu', [True]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 1]),
('bn', [32]), ('relu', [True]), ('max_pool2d', [2, 2, 0]),
('flatten', []), ('linear', [args.n_way, 32 * 5 * 5])]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
root = '/mnt/aitrics_ext/ext01/yanbin/MAML-Pytorch/data/miniImagenet'
trainset = MiniImagenet(root,
mode='train',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
resize=args.imgsz)
testset = MiniImagenet(root,
mode='test',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
resize=args.imgsz)
trainloader = DataLoader(trainset,
batch_size=args.task_num,
shuffle=True,
num_workers=4,
worker_init_fn=worker_init_fn,
drop_last=True)
testloader = DataLoader(testset,
batch_size=1,
shuffle=True,
num_workers=1,
worker_init_fn=worker_init_fn,
drop_last=True)
train_data = inf_get(trainloader)
test_data = inf_get(testloader)
best_acc = 0.0
if not os.path.exists('ckpt/{}'.format(args.exp)):
os.mkdir('ckpt/{}'.format(args.exp))
for epoch in range(args.epoch):
np.random.seed()
x_spt, y_spt, x_qry, y_qry = train_data.__next__()
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(
device), x_qry.to(device), y_qry.to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry)
if epoch % 100 == 0:
print('epoch:', epoch, '\ttraining acc:', accs)
if epoch % 2500 == 0: # evaluation
# save checkpoint
torch.save(maml.state_dict(),
'ckpt/{}/model_{}.pkl'.format(args.exp, epoch))
accs_all_test = []
for _ in range(600):
x_spt, y_spt, x_qry, y_qry = test_data.__next__()
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze().to(
device), y_spt.squeeze().to(device), x_qry.squeeze().to(
device), y_qry.squeeze().to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
with open('ckpt/' + args.exp + '/test.txt', 'a') as f:
print('test epoch {}: acc:{:.4f}'.format(epoch, accs[-1]),
file=f)
def main():
torch.manual_seed(222) # 为cpu设置种子，为了使结果是确定的
torch.cuda.manual_seed_all(222) # 为GPU设置种子，为了使结果是确定的
np.random.seed(222)
print(args)
config = [
('conv2d', [32, 1, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 1, 0]),
('flatten', []),
('linear', [args.n_way, 7040])
]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
# batchsz here means total episode number
mini = MiniImagenet("./miniimagenet", mode='train', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000)
mini_test = MiniImagenet("./miniimagenet", mode='test', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100)
last_accuracy = 0
plt_train_loss = []
plt_train_acc = []
plt_test_loss = []
plt_test_acc =[]
for epoch in range(args.epoch // 10000):
# fetch meta_batchsz num of episode each time
db = DataLoader(mini, args.task_num, shuffle=True, num_workers=1, pin_memory=True)
for step, (x_spt, y_spt, x_qry, y_qry) in enumerate(db):
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(device), x_qry.to(device), y_qry.to(device)
accs, loss_q = maml(x_spt, y_spt, x_qry, y_qry)
if step % 30 == 0:
d = loss_q.cpu()
dd = d.detach().numpy()
plt_train_loss.append(dd)
plt_train_acc.append(accs[-1])
print('step:', step, '\ttraining acc:', accs)
if step % 50 == 0: # evaluation
db_test = DataLoader(mini_test, 1, shuffle=True, num_workers=1, pin_memory=True)
accs_all_test = []
loss_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs, loss_test= maml.finetunning(x_spt, y_spt, x_qry, y_qry)
loss_all_test.append(loss_test)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
plt_test_acc.append(accs[-1])
avg_loss = np.mean(np.array(loss_all_test))
plt_test_loss.append(avg_loss)
print('Test acc:', accs)
test_accuracy = np.mean(np.array(accs))
if test_accuracy > last_accuracy:
# save networks
torch.save(maml.state_dict(), str(
"./models/miniimagenet_maml" + str(args.n_way) + "way_" + str(
args.k_spt) + "shot.pkl"))
last_accuracy = test_accuracy
plt.figure()
plt.title("testing info")
plt.xlabel("episode")
plt.ylabel("Acc/loss")
plt.plot(plt_test_loss, label='Loss')
plt.plot(plt_test_acc, label='Acc')
plt.legend(loc='upper right')
plt.savefig('./drawing/test.png')
plt.show()
plt.figure()
plt.title("training info")
plt.xlabel("episode")
plt.ylabel("Acc/loss")
plt.plot(plt_train_loss, label='Loss')
plt.plot(plt_train_acc, label='Acc')
plt.legend(loc='upper right')
plt.savefig('./drawing/train.png')
plt.show()
def main():
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
print(args)
config = [('conv2d', [32, 3, 3, 3, 1, 0]), ('relu', [True]), ('bn', [32]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]), ('bn', [32]), ('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]), ('relu', [True]), ('bn', [32]),
('max_pool2d', [2, 2, 0]), ('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]), ('bn', [32]), ('max_pool2d', [2, 1, 0]),
('flatten', []), ('linear', [args.n_way, 32 * 5 * 5])]
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
# batchsz here means total episode number
mini = MiniImagenet('./data/',
mode='train',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000,
resize=args.img_sz)
mini_test = MiniImagenet('./data/',
mode='test',
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100,
resize=args.img_sz)
for epoch in range(args.epoch // 10000):
# fetch meta_batchsz num of episode each time
db = DataLoader(mini,
args.task_num,
shuffle=True,
num_workers=1,
pin_memory=True)
for step, (x_spt, y_spt, x_qry, y_qry) in enumerate(db):
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(
device), x_qry.to(device), y_qry.to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 30 == 0:
print('step:', step, '\ttraining acc:', accs)
if step % 500 == 0: # evaluation
db_test = DataLoader(mini_test,
1,
shuffle=True,
num_workers=1,
pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
def main():
start_time = time.time()
torch.manual_seed(args.seed)
torch.cuda.manual_seed_all(args.seed)
np.random.seed(args.seed)
print(args)
print(argv)
os.makedirs(args.modelfile.split('/')[0], exist_ok=True)
config = [
('conv2d', [32, 3, 3, 3, 1, 1]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 1]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 1]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 1]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('flatten', []),
('linear', [args.n_way, 32 * 5 * 5])
]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
mini = MiniImagenet('./dataset/mini-imagenet/', mode='train', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000, resize=args.imgsz)
if args.domain == 'mini':
mini_test = MiniImagenet('./dataset/mini-imagenet/', mode='test', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=args.test_iter, resize=args.imgsz)
mini_val = MiniImagenet('./dataset/mini-imagenet/', mode='val', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=args.test_iter, resize=args.imgsz)
elif args.domain == 'cub':
print("CUB dataset")
mini_test = MiniImagenet('./dataset/CUB_200_2011/', mode='test', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=args.test_iter, resize=args.imgsz)
elif args.domain == 'traffic':
print("Traffic dataset")
mini_test = MiniImagenet('./dataset/GTSRB/', mode='test', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=args.test_iter, resize=args.imgsz)
elif args.domain == 'flower':
print("flower dataset")
mini_test = MiniImagenet('./dataset/102flowers/', mode='test', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=args.test_iter, resize=args.imgsz)
else:
print("Dataset Error")
return
if args.mode == 'test':
count = 0
db_test = DataLoader(mini_test, 1, shuffle=True, num_workers=6, pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
print(count)
count += 1
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry, 'test', args.modelfile, pertub_scale=args.pertub_scale, num_ensemble=args.num_ensemble, fgsm_epsilon=args.fgsm_epsilon)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
np.set_printoptions(linewidth=1000)
print("Running Time:", time.time()-start_time)
print(accs)
return
for epoch in range(args.epoch//10000):
db = DataLoader(mini, args.task_num, shuffle=True, num_workers=4, pin_memory=True)
for step, (x_spt, y_spt, x_qry, y_qry) in enumerate(db):
x_spt, y_spt, x_qry, y_qry = x_spt.to(device), y_spt.to(device), x_qry.to(device), y_qry.to(device)
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 30 == 0:
print('epoch:', epoch, 'step:', step, '\ttraining acc:', accs)
if step % 200 == 0:
print("Save model", args.modelfile)
torch.save(maml, args.modelfile)
db_test = DataLoader(mini_val, 1, shuffle=True, num_workers=4, pin_memory=True)
accs_all_val = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry, 'train_test')
accs_all_val.append(accs)
db_test = DataLoader(mini_test, 1, shuffle=True, num_workers=4, pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
accs_val = np.array(accs_all_val).mean(axis=0).astype(np.float16)
save_modelfile = "{}_{}_{}_{:0.4f}_{:0.4f}.pth".format(args.modelfile, epoch, step, accs_val[-1], accs[-1])
print(save_modelfile)
torch.save(maml, save_modelfile)
print("Val:", accs_val)
print("Test:", accs)
def main():
torch.manual_seed(222) # 为cpu设置种子，为了使结果是确定的
torch.cuda.manual_seed_all(222) # 为GPU设置种子，为了使结果是确定的
np.random.seed(222)
print(args)
config = [
('conv2d', [32, 1, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 2, 0]),
('conv2d', [32, 32, 3, 3, 1, 0]),
('relu', [True]),
('bn', [32]),
('max_pool2d', [2, 1, 0]),
('flatten', []),
('linear', [args.n_way, 7040])
]
device = torch.device('cuda')
maml = Meta(args, config).to(device)
if os.path.exists(
"./models/" + str("./models/miniimagenet_maml" + str(args.n_way) + "way_" + str(args.k_spt) + "shot.pkl")):
path = "./models/" + str("./models/miniimagenet_maml" + str(args.n_way) + "way_" + str(args.k_spt) + "shot.pkl")
maml.load_state_dict(path)
print("load model success")
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print('Total trainable tensors:', num)
# batchsz here means total episode number
mini = MiniImagenet("./miniimagenet", mode='train', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=10000)
mini_test = MiniImagenet("./miniimagenet", mode='val', n_way=args.n_way, k_shot=args.k_spt,
k_query=args.k_qry,
batchsz=100)
test_accuracy = []
for epoch in range(10):
# fetch meta_batchsz num of episode each time
db_test = DataLoader(mini_test, 1, shuffle=True, num_workers=1, pin_memory=True)
accs_all_test = []
for x_spt, y_spt, x_qry, y_qry in db_test:
x_spt, y_spt, x_qry, y_qry = x_spt.squeeze(0).to(device), y_spt.squeeze(0).to(device), \
x_qry.squeeze(0).to(device), y_qry.squeeze(0).to(device)
accs, loss_t = maml.finetunning(x_spt, y_spt, x_qry, y_qry)
accs_all_test.append(accs)
# [b, update_step+1]
accs = np.array(accs_all_test).mean(axis=0).astype(np.float16)
print('Test acc:', accs)
test_accuracy.append(accs[-1])
average_accuracy = sum(test_accuracy) / len(test_accuracy)
print("average accuracy:{}".format(average_accuracy))
def main(args):
torch.manual_seed(222)
torch.cuda.manual_seed_all(222)
np.random.seed(222)
torch.backends.cudnn.benchmark=True
print(args)
config = [
("conv2d", [64, 1, 3, 3, 2, 0]),
("relu", [True]),
("bn", [64]),
("conv2d", [64, 64, 3, 3, 2, 0]),
("relu", [True]),
("bn", [64]),
("conv2d", [64, 64, 3, 3, 2, 0]),
("relu", [True]),
("bn", [64]),
("conv2d", [64, 64, 2, 2, 1, 0]),
("relu", [True]),
("bn", [64]),
("flatten", []),
("linear", [args.n_way, 64]),
]
device = torch.device("cuda")
maml = Meta(args, config).to(device)
db_train = OmniglotNShot(
"omniglot",
batchsz=args.task_num,
n_way=args.n_way,
k_shot=args.k_spt,
k_query=args.k_qry,
imgsz=args.imgsz,
)
tmp = filter(lambda x: x.requires_grad, maml.parameters())
num = sum(map(lambda x: np.prod(x.shape), tmp))
print(maml)
print("Total trainable tensors:", num)
for step in range(args.epoch):
x_spt, y_spt, x_qry, y_qry = db_train.next()
x_spt, y_spt, x_qry, y_qry = (
torch.from_numpy(x_spt).to(device),
torch.from_numpy(y_spt).to(device),
torch.from_numpy(x_qry).to(device),
torch.from_numpy(y_qry).to(device),
)
# x_spt: shape: 32, 5, 1, 28, 28
# y_spt: shape: 32, 5
# x_qry: 32, 75, 1, 28, 28
# y_qry: 32, 75
# set traning=True to update running_mean, running_variance, bn_weights, bn_bias
accs = maml(x_spt, y_spt, x_qry, y_qry)
if step % 50 == 0:
print("step:", step, "\ttraining acc:", accs)
if step % 500 == 0:
accs = []
for _ in range(1000 // args.task_num):
# test
x_spt, y_spt, x_qry, y_qry = db_train.next("test")
x_spt, y_spt, x_qry, y_qry = (
torch.from_numpy(x_spt).to(device),
torch.from_numpy(y_spt).to(device),
torch.from_numpy(x_qry).to(device),
torch.from_numpy(y_qry).to(device),
)
# split to single task each time
for x_spt_one, y_spt_one, x_qry_one, y_qry_one in zip(x_spt, y_spt, x_qry, y_qry):
test_acc = maml.finetunning(x_spt_one, y_spt_one, x_qry_one, y_qry_one)
accs.append(test_acc)
# [b, update_step+1]
accs = np.array(accs).mean(axis=0).astype(np.float16)
print("Test acc:", accs)