def load_mnist_data(mnist_data_file_path='./mnist_data/',
random_seed=1234,
validation_ratio=1 / 6):
mnist_transform = transforms.Compose(
[transforms.ToTensor(),
transforms.Normalize((0.1307, ), (0.3081, ))])
mnist_train_vali = datasets.MNIST(root=mnist_data_file_path,
train=True,
transform=mnist_transform,
target_transform=None,
download=True)
mnist_test = datasets.MNIST(root=mnist_data_file_path,
train=False,
transform=mnist_transform,
target_transform=None,
download=True)
num_train_vali = mnist_train_vali.__len__()
indices = list(range(num_train_vali))
num_vali = int(validation_ratio * num_train_vali)
np.random.seed(random_seed)
np.random.shuffle(indices)
train_sampler = SubsetRandomSampler(indices[num_vali:])
valid_sampler = SubsetRandomSampler(indices[:num_vali])
mnist_train = TensorDataset(*list(
DataLoader(
mnist_train_vali, num_train_vali -
num_vali, sampler=train_sampler))[0])
mnist_vali = TensorDataset(*list(
DataLoader(mnist_train_vali, num_vali, sampler=valid_sampler))[0])
mnist_test = TensorDataset(
*list(DataLoader(mnist_test, mnist_test.__len__()))[0])
return mnist_train, mnist_vali, mnist_test
def load_learned_aae_and_clf(aaepath, optspath, clfpath, training_data_path):
# load training and validation data
data = joblib.load(training_data_path)
# load opts dictionary
opts = joblib.load(optspath)['opts']
# setup validation dataset and dataloader (training is same as before)
val_dataset = TensorDataset(torch.from_numpy(data['Xval']).float(), torch.from_numpy(data['yval']).long())
del data
val_dataloader = DataLoader(val_dataset, batch_size = opts['batch_size'], num_workers=0, drop_last=True)
# load aae model
aae = adverserial_autoencoder(val_dataloader, val_dataset.__len__(),
model_savepath = '',
downsample_to = (opts['downsample_to_H'], opts['downsample_to_W']),
nz = opts['nz'], ngf = opts['ngf'], ncrit_steps = opts['ncrit_steps'],
grad_penalty = opts['grad_penalty'], batch_size = opts['batch_size'],
lr = opts['learning_rate'], disc_weight_decay = opts['Disc_weight_decay'],
WGAN_loss_lambda = opts['WGAN_loss_lambda'])
aae.load_state_dict(torch.load(aaepath))
aae.eval()
# now load clf
latent_clf = latent_classifier(nz = opts['nz'], nclasses = len(opts['label_types']))
latent_clf.load_state_dict(torch.load(clfpath))
latent_clf.eval()
return aae, latent_clf, val_dataloader
def tool_hyperparams(train_val_folds, labelled_data, labels, unlabelled_data,
output_folder, device):
input_size = labelled_data.size(1)
num_classes = labels.unique().size(0)
state_path = '{}/state'.format(output_folder)
hidden_layer_size = min(500, (input_size + num_classes) // 2)
hidden_layers = range(1, 5)
lr = 1e-3
best_accuracies = [0, 0]
best_params = None
normalizer = StandardScaler()
all_data = torch.tensor(
normalizer.fit_transform(
torch.cat((labelled_data, unlabelled_data)).numpy())).float()
labelled_data = all_data[:len(labels)]
for h in hidden_layers:
print('Ladder params {}'.format(h))
model_name = '{}'.format(h)
denoising_cost = [1000.0, 10.0] + ([0.1] * h)
params = {
'model name': model_name,
'input size': input_size,
'hidden layers': h * [hidden_layer_size],
'denoising cost': denoising_cost,
'num classes': num_classes
}
accuracies = []
for train_ind, val_ind in train_val_folds:
s_d = TensorDataset(labelled_data[train_ind], labels[train_ind])
unlabelled_data = torch.cat(
(all_data[len(labels):], labelled_data[train_ind]))
u_d = TensorDataset(unlabelled_data,
-1 * torch.ones(unlabelled_data.size(0)))
v_d = TensorDataset(labelled_data[val_ind], labels[val_ind])
s_dl = DataLoader(s_d, batch_size=100, shuffle=True)
u_dl = DataLoader(u_d, batch_size=100, shuffle=True)
v_dl = DataLoader(v_d, batch_size=v_d.__len__())
model = LadderNetwork(input_size, [hidden_layer_size] * h,
num_classes, denoising_cost, lr, device,
model_name, state_path)
model.train_model(100, (u_dl, s_dl, v_dl))
validation_result = model.test_model(v_dl)
print('Validation accuracy: {}'.format(validation_result))
accuracies.append(validation_result)
if device == 'cuda':
torch.cuda.empty_cache()
if mean(accuracies) > mean(best_accuracies):
best_accuracies = accuracies
best_params = params
s_d = TensorDataset(labelled_data, labels)
unlabelled_data = all_data
u_d = TensorDataset(unlabelled_data,
-1 * torch.ones(unlabelled_data.size(0)))
s_dl = DataLoader(s_d, batch_size=100, shuffle=True)
u_dl = DataLoader(u_d, batch_size=100, shuffle=True)
final_model = LadderNetwork(best_params['input size'],
best_params['hidden layers'],
best_params['num classes'],
best_params['denoising cost'], lr, device,
'ladder', state_path)
final_model.train_model(100, (u_dl, s_dl, None))
return final_model, normalizer, best_accuracies
(time.time() - epoch_start_time), progress), end='\r', flush=True)
model.eval()
for i, data in enumerate(val_loader):
val_pred = model(data[0].cuda())
batch_loss = loss(val_pred, data[1].cuda())
val_acc += np.sum(np.argmax(val_pred.cpu().data.numpy(), axis=1) == data[1].numpy())
val_loss += batch_loss.item()
progress = ('#' * int(float(i)/len(val_loader)*40)).ljust(40)
print ('[%03d/%03d] %2.2f sec(s) | %s |' % (epoch+1, num_epoch, \
(time.time() - epoch_start_time), progress), end='\r', flush=True)
val_acc = val_acc/val_set.__len__()
train_acc = train_acc/train_set.__len__()
print('[%03d/%03d] %2.2f sec(s) Train Acc: %3.6f Loss: %3.6f | Val Acc: %3.6f loss: %3.6f' % \
(epoch + 1, num_epoch, time.time()-epoch_start_time, \
train_acc, train_loss, val_acc, val_loss))
train_acc_.append(train_acc)
val_acc_.append(val_acc)
if (val_acc > best_acc):
with open('./acc.txt','w') as f:
f.write(str(epoch)+'\t'+str(val_acc)+'\n')
torch.save(model.state_dict(), model_path+'model_cnn')
best_acc = val_acc
print ('Model Saved!')
def main():
parser = argparse.ArgumentParser(
description=
'PyTorch graph convolutional neural net for whole-graph classification'
)
parser.add_argument('--dataset',
type=str,
default="dataset/AEF_V_0.mat",
help='path of the dataset (default: data/data.mat)')
parser.add_argument('--node_number',
type=int,
default=256,
help='node number of graph (default: 256)')
parser.add_argument('--batch_size',
type=int,
default=32,
help='number of input size (default: 128)')
parser.add_argument('--k_hop',
type=int,
default=4,
help='times of aggregate (default: 1)')
args = parser.parse_args()
x_train, x_label, val_data, val_label = readfile(
args.dataset) # 'train.csv'
x_train = x_train.permute(2, 0, 1)
x_label = torch.squeeze(x_label, dim=1).long()
val_data = val_data.permute(2, 0, 1)
val_label = torch.squeeze(val_label, dim=1).long()
train_set = TensorDataset(x_train, x_label)
val_set = TensorDataset(val_data, val_label)
#batch_size = 128
train_loader = DataLoader(train_set,
batch_size=args.batch_size,
shuffle=True,
num_workers=0)
val_loader = DataLoader(val_set,
batch_size=args.batch_size,
shuffle=True,
num_workers=0)
model = CNNnet(args.node_number, args.batch_size, args.k_hop)
#print(model)
model
loss = torch.nn.CrossEntropyLoss()
#para = list(model.parameters())
#print(para)
optimizer = torch.optim.Adam(model.parameters(),
lr=0.001) # optimize all cnn parameters
loss_func = torch.nn.CrossEntropyLoss()
best_acc = 0.0
num_epoch = 100
for epoch in range(num_epoch):
epoch_start_time = time.time()
train_acc = 0.0
train_loss = 0.0
val_acc = 0.0
val_loss = 0.0
model.train()
for i, data in enumerate(train_loader):
optimizer.zero_grad()
train_pred = model(data[0])
#print(train_pred.size())
#print(data[1].size())
batch_loss = loss(train_pred, data[1])
batch_loss.backward()
optimizer.step()
train_acc += np.sum(
np.argmax(train_pred.cpu().data.numpy(), axis=1) ==
data[1].numpy())
train_loss += batch_loss.item()
model.eval()
val_TP = 1.0
val_TN = 1.0
val_FN = 1.0
val_FP = 1.0
predict_total = []
label_total = []
for i, data in enumerate(val_loader):
val_pred = model(data[0])
batch_loss = loss(val_pred, data[1])
predict_val = np.argmax(val_pred.cpu().data.numpy(), axis=1)
predict_total = np.append(predict_total, predict_val)
label_val = data[1].numpy()
label_total = np.append(label_total, label_val)
val_acc += np.sum(
np.argmax(val_pred.cpu().data.numpy(), axis=1) ==
data[1].numpy())
val_loss += batch_loss.item()
val_TP = ((predict_total == 1) & (label_total == 1)).sum().item()
val_TN = ((predict_total == 0) & (label_total == 0)).sum().item()
val_FN = ((predict_total == 0) & (label_total == 1)).sum().item()
val_FP = ((predict_total == 1) & (label_total == 0)).sum().item()
val_spe = val_TN / (val_FP + val_TN + 0.001)
val_rec = val_TP / (val_TP + val_FN + 0.001)
test_acc = (val_TP + val_TN) / (val_FP + val_TN + val_TP + val_FN +
0.001)
val_acc = val_acc / val_set.__len__()
print('%3.6f %3.6f %3.6f %3.6f' %
(train_acc / train_set.__len__(), train_loss, val_acc, val_loss))
if (val_acc > best_acc):
with open('save/AET_V_0.txt', 'w') as f:
f.write(
str(epoch) + '\t' + str(val_acc) + '\t' + str(val_spe) +
'\t' + str(val_rec) + '\n')
torch.save(model.state_dict(), 'save/model.pth')
best_acc = val_acc
for name, param in model.named_parameters():
if param.requires_grad:
print(param[0])
def main():
# x_train, x_label, val_data, val_label = readfile(sys.argv[1])
# x_train, x_label, val_data, val_label = readfile("train_data.npy", "label.npy", val_num = 0.2)
# x_train, x_label, val_data, val_label = readfile_from_np("/content/drive/My Drive/ML2019/hw3_torch/train_data.npy", "/content/drive/My Drive/ML2019/hw3_torch/label.npy", val_num = 0.2, augmentation = 1)
# x_train, x_label, val_data, val_label = readfile_from_csv("/content/drive/My Drive/ML2019/hw3_torch/train.csv", val_num = 0.2)
x_train, x_label, val_data, val_label = readfile_from_csv(sys.argv[1], val_num = 0.2)
# x_train, x_label, val_data, val_label = readfile_from_np("train_data.npy", "label.npy", val_num = 0.2, augmentation = 5)
train_set = MyDataset(x_train, x_label, augmentation = 8)
val_set = TensorDataset(val_data, val_label)
num_epoch = 50
batch_size = 256
# if (len(sys.argv) >= 3):
# num_epoch = int(sys.argv[1])
# batch_size = int(sys.argv[2])
train_loader = DataLoader(train_set, batch_size=batch_size, shuffle=True, num_workers=8)
val_loader = DataLoader(val_set, batch_size=batch_size, shuffle=False, num_workers=8)
#########GPU#########
model = Classifier().cuda()
# model = Classifier()
train_loss_log = []
train_acc_log = []
val_loss_log = []
val_acc_log = []
# print(model)
loss = nn.CrossEntropyLoss()
optimizer = torch.optim.Adam(model.parameters(), lr=0.001)
best_acc = 0.0
for epoch in range(num_epoch):
epoch_start_time = time.time()
train_acc = 0.0
train_loss = 0.0
val_acc = 0.0
val_loss = 0.0
print('Epoch [%03d/%03d]' % (epoch+1, num_epoch))
model.train()
batch_num = len(train_loader)
# msg = '...........'
print('...........')
for i, data in enumerate(train_loader):
# print (msg,end = '', flush=True)
optimizer.zero_grad()
#########GPU#########
train_pred = model(data[0].cuda())
batch_loss = loss(train_pred, data[1].cuda())
# train_pred = model(data[0])
# batch_loss = loss(train_pred, data[1])
batch_loss.backward()
optimizer.step()
train_acc += np.sum(np.argmax(train_pred.cpu().data.numpy(), axis=1) == data[1].numpy())
train_loss += batch_loss.item()
# progress = (u"\u2588" * (int(float(i)/batch_num*40))).ljust(40,'.')
# # progress = ('#' * int(float(i)/len(train_loader)*40)).ljust(40)
# back = '\b'*len(msg)
# msg = '[%0 3d/%03d] %2.2f sec(s) |%s|' % (i+1, batch_num, \
# (time.time() - epoch_start_time), progress)
# print(back,end = '', flush=True)
model.eval()
val_batch_num = len(val_loader)
for i, data in enumerate(val_loader):
#########GPU#########
val_pred = model(data[0].cuda())
batch_loss = loss(val_pred, data[1].cuda())
# val_pred = model(data[0])
# batch_loss = loss(val_pred, data[1])
val_acc += np.sum(np.argmax(val_pred.cpu().data.numpy(), axis=1) == data[1].numpy())
val_loss += batch_loss.item()
# progress = ('=' * (int(float(i)/len(val_loader)*40)-1)+'>').ljust(40)
# print ('[%03d/%03d] %2.2f sec(s) | %s |' % (i+1, num_epoch, \
# (time.time() - epoch_start_time), progress), end='\r', flush=True)
val_acc = val_acc / val_set.__len__()
train_acc = train_acc/train_set.__len__()
print('[%0 3d/%03d] %2.2f sec(s) train_acc: %3.6f Loss: %3.6f | val_acc: %3.6f val_loss: %3.6f' % \
(batch_num, batch_num, time.time()-epoch_start_time, \
train_acc, train_loss/batch_num, val_acc, val_loss/val_batch_num))
print('')
#log
train_loss_log.append(train_loss/batch_num)
train_acc_log.append(train_acc)
val_loss_log.append(val_loss/val_batch_num)
val_acc_log.append(val_acc)
def main(isplot=False):
"""
Main functoin
- Load data
- Create modeal
- train and evaluate
:return:
"""
# ----- PARAMETER --------------------
nb_pair = 1000
batch_size = [100]
nb_epochs = [100]
learning_rate = [5e-3]
nb_iteration = 10
for ep in nb_epochs:
for bs in batch_size:
for lr in learning_rate:
saved_train_accuracy = []
saved_test_accuracy = []
for i in range(nb_iteration):
print('\n------- ITERATION - %d -------' % (i + 1))
# ----- DATASET --------------------
train_input, train_target, _, test_input, test_target, _ = prologue.generate_pair_sets(
nb_pair)
# Normalize by dividing it to the max RGB value
train_input /= 255
test_input /= 255
# Split between training (80%) and validation (20%)
train_dataset = TensorDataset(train_input, train_target)
train_len = int(0.8 * train_dataset.__len__())
validation_len = train_dataset.__len__() - train_len
train_data, validation_data = random_split(
train_dataset, lengths=[train_len, validation_len])
train_loader = DataLoader(train_data,
batch_size=bs,
shuffle=False,
num_workers=2)
validation_loader = DataLoader(validation_data,
batch_size=bs,
shuffle=False,
num_workers=2)
# Test
test_dataset = TensorDataset(test_input, test_target)
test_loader = DataLoader(test_dataset,
batch_size=bs,
shuffle=False,
num_workers=2)
# ----- MODEL --------------------
# - Fully Connected model
model = FCModel()
# - Small cnn
# model = ConvModel()
# - Deeper cnn
# model = DeepConvModel()
# Optimizer
optimizer = optim.Adam(model.parameters(), lr=lr)
# Loss function
criterion = nn.CrossEntropyLoss()
# ----- TRAINING + VALIDATION --------------------
nb_batch_train = train_len // bs
nb_batch_validation = validation_len // bs
train_losses = []
train_accuracies = []
validation_losses = []
validation_accuracies = []
for epoch in range(ep):
# TRAIN
train_loss, train_accuracy = train(
train_loader, model, criterion, optimizer,
nb_batch_train)
train_losses.append(train_loss)
train_accuracies.append(train_accuracy)
# VALIDATION
validation_loss, validation_accuracy = validation(
validation_loader, model, criterion,
nb_batch_validation)
validation_losses.append(validation_loss)
validation_accuracies.append(validation_accuracy)
# Print progress
if (epoch + 1) % (ep / 10) == 0:
print(
'Epoch [%d/%d] --- TRAIN: Loss: %.4f - Accuracy: %d%% --- '
'VALIDATION: Loss: %.4f - Accuracy: %d%%' %
(epoch + 1, ep, train_loss, train_accuracy,
validation_loss, validation_accuracy))
# ----- PLOT --------------------
if isplot:
plt.figure()
plt.subplot(1, 2, 1)
plt.plot(train_losses, label='Train loss')
plt.plot(validation_losses, label='Validation loss')
plt.ylabel('Loss')
plt.xlabel('Epoch')
plt.legend(frameon=False)
plt.subplot(1, 2, 2)
plt.plot(train_accuracies, label='Train accuracy')
plt.plot(validation_accuracies,
label='Validation accuracy')
plt.ylabel('Accuracy')
plt.xlabel('Epoch')
plt.legend(frameon=False)
# ----- TEST --------------------
train_accuracy = test(train_loader, model)
saved_train_accuracy.append(train_accuracy)
test_accuracy = test(test_loader, model)
saved_test_accuracy.append(test_accuracy)
print('Accuracy on train set: %d %%' % train_accuracy)
print('Accuracy on test set: %d %%' % test_accuracy)
# ----- MEAN + STD OVER ITERATION --------------------
print('\n------- NB EPOCHS - %d -------' % ep)
print('------- LEARNING RATE - %f -------' % lr)
print('------- BATCH SIZE - %d -------' % bs)
print(
'Mean train accuracy {:.02f} --- Std train accuracy {:.02f} '
'\nMean test accuracy {:.02f} --- Std test accuracy {:.02f}'
.format(
torch.FloatTensor(saved_train_accuracy).mean(),
torch.FloatTensor(saved_train_accuracy).std(),
torch.FloatTensor(saved_test_accuracy).mean(),
torch.FloatTensor(saved_test_accuracy).std()))
def __main__():
(data, labels), (t, l) = load_MNIST_data()
model = SimpleNetwork(784, [400, 400], 10, 1e-3, device, 'simple_saliency',
'./outputs/saliency')
indices = stratified_k_fold(data, labels, 2)
train, val = next(indices)
train_dataset = TensorDataset(data[train], labels[train])
val_dataset = TensorDataset(data[val], labels[val])
t_dl = DataLoader(train_dataset, batch_size=100, shuffle=True)
v_dl = DataLoader(val_dataset, batch_size=val_dataset.__len__())
model.train_model(100, (None, t_dl, v_dl))
input = t[12].unsqueeze(0)
output = model.classify(input)
_, prediction = output.max(1)
print(prediction)
vanilla_saliency = VanillaSaliency(model.Classifier,
device).generate_saliency(
input, prediction)
guided_saliency = GuidedSaliency(model.Classifier,
device).generate_saliency(
input, prediction)
if device.type == 'cuda':
vanilla_saliency = vanilla_saliency.cpu()
guided_saliency = guided_saliency.cpu()
for s in [(vanilla_saliency, 'vanilla'), (guided_saliency, 'guided')]:
saliency, string = s
pos_map = saliency.clamp(min=0)
pos_map = pos_map / pos_map.max()
neg_map = -saliency.clamp(max=0)
neg_map = neg_map / neg_map.max()
abs_map = saliency.abs()
abs_map = abs_map / abs_map.max()
input = input.detach()
input = input.view(28, 28)
pos_map = pos_map.view(28, 28)
neg_map = neg_map.view(28, 28)
abs_map = abs_map.view(28, 28)
figure = plt.figure(figsize=(8, 8), facecolor='w')
plt.subplot(2, 2, 1)
plt.title("Original Image")
plt.imshow(input, cmap="gray", interpolation=None)
plt.subplot(2, 2, 2)
plt.title("Positive Saliency")
plt.imshow(pos_map, cmap='gray', interpolation=None)
plt.subplot(2, 2, 3)
plt.title("Negative Saliency")
plt.imshow(neg_map, cmap='gray', interpolation=None)
plt.subplot(2, 2, 4)
plt.title("Absolute Saliency")
plt.imshow(abs_map, cmap='gray', interpolation=None)
plt.savefig('./outputs/saliency/{}_saliency_maps.pdf'.format(string))
def tool_hyperparams(train_val_folds, labelled_data, labels, unlabelled_data,
output_folder, device):
input_size = labelled_data.size(1)
num_classes = labels.unique().size(0)
state_path = '{}/state'.format(output_folder)
hidden_layer_size = min(500, (input_size + num_classes) // 2)
hidden_layers_vae = range(1, 3)
hidden_layers_classifier = range(1, 3)
z_size = [200, 100, 50]
param_combinations = [(i, j, k) for i in hidden_layers_vae
for j in hidden_layers_classifier for k in z_size]
lr = 1e-3
best_accuracies = [0, 0]
best_params = None
normalizer = MinMaxScaler()
data = torch.tensor(
normalizer.fit_transform(
torch.cat((labelled_data, unlabelled_data)).numpy())).float()
labelled_data = data[:len(labels)]
unlabelled_data = data[len(labels):]
for p in param_combinations:
print('M2 params {}'.format(p))
h_v, h_c, z = p
model_name = '{}_{}_{}'.format(h_v, h_c, z)
params = {
'model name': model_name,
'input size': input_size,
'hidden layers vae': h_v * [hidden_layer_size],
'hidden layers classifier': h_c * [hidden_layer_size],
'latent dim': z,
'num classes': num_classes
}
accuracies = []
for train_ind, val_ind in train_val_folds:
s_d = TensorDataset(labelled_data[train_ind], labels[train_ind])
v_d = TensorDataset(labelled_data[val_ind], labels[val_ind])
s_dl = DataLoader(s_d, batch_size=100, shuffle=True)
v_dl = DataLoader(v_d, batch_size=v_d.__len__())
if len(unlabelled_data) == 0:
u_dl = None
else:
u_d = TensorDataset(unlabelled_data,
-1 * torch.ones(unlabelled_data.size(0)))
u_dl = DataLoader(u_d, batch_size=100, shuffle=True)
model = M2Runner(input_size, [hidden_layer_size] * h_v,
[hidden_layer_size] * h_c, z, num_classes,
nn.Sigmoid(), lr, device, model_name, state_path)
model.train_model(100, (u_dl, s_dl, v_dl))
validation_result = model.test_model(v_dl)
print('Validation accuracy: {}'.format(validation_result))
accuracies.append(validation_result)
if device == 'cuda':
torch.cuda.empty_cache()
if mean(accuracies) > mean(best_accuracies):
best_accuracies = accuracies
best_params = params
s_d = TensorDataset(labelled_data, labels)
s_dl = DataLoader(s_d, batch_size=100, shuffle=True)
if len(unlabelled_data) == 0:
u_dl = None
else:
u_d = TensorDataset(unlabelled_data,
-1 * torch.ones(unlabelled_data.size(0)))
u_dl = DataLoader(u_d, batch_size=100, shuffle=True)
final_model = M2Runner(best_params['input size'],
best_params['hidden layers vae'],
best_params['hidden layers classifier'],
best_params['latent dim'],
best_params['num classes'], nn.Sigmoid(), lr,
device, 'm2', state_path)
final_model.train_model(100, (u_dl, s_dl, None))
return final_model, normalizer, best_accuracies
train_loss += batch_loss.item()
progress = ('#' * int(float(i) / len(train_loader) * 40)).ljust(40)
print ('[%03d/%03d] %2.2f sec(s) | %s |' % (epoch+1, num_epoch, \
(time.time() - epoch_start_time), progress), end='\r', flush=True)
model.eval()
for i, data in enumerate(val_loader):
val_pred = model(data[0].cuda())
batch_loss = loss(val_pred, data[1].cuda())
val_acc += np.sum(
np.argmax(val_pred.cpu().data.numpy(), axis=1) == data[1].numpy())
val_loss += batch_loss.item()
progress = ('#' * int(float(i) / len(val_loader) * 40)).ljust(40)
print ('[%03d/%03d] %2.2f sec(s) | %s |' % (epoch+1, num_epoch, \
(time.time() - epoch_start_time), progress), end='\r', flush=True)
val_acc = val_acc / val_set.__len__()
print('[%03d/%03d] %2.2f sec(s) Train Acc: %3.6f Loss: %3.6f | Val Acc: %3.6f loss: %3.6f' % \
(epoch + 1, num_epoch, time.time()-epoch_start_time, \
train_acc/train_set.__len__(), train_loss, val_acc, val_loss))
if (val_acc > best_acc):
with open('acc.txt', 'w') as f:
f.write(str(epoch) + '\t' + str(val_acc) + '\n')
torch.save(model.state_dict(), 'model.pth')
best_acc = val_acc
print('Model Saved!')
def main():
# bash hw6_train.sh <train_x file> <train_y file> <test_x file> <dict.txt.big file>
# weight, train_x, train_y, val_x, val_y = readfile_from_csv(sys.argv[1],
# sys.argv[3],
# sys.argv[2],
# '/content/drive/My Drive/ML2019/hw6/word2vec_noHMM.wv',
# val_num=0.2)
weight, train_x, train_y, val_x, val_y = readfile_from_csv(
sys.argv[1],
sys.argv[3],
sys.argv[2],
'word2vec_noHMM.wv',
val_num=0.2)
train_set = TensorDataset(train_x, train_y)
val_set = TensorDataset(val_x, val_y)
num_epoch = 20
batch_size = 1024
train_loader = DataLoader(train_set,
batch_size=batch_size,
shuffle=True,
num_workers=8)
val_loader = DataLoader(val_set,
batch_size=batch_size,
shuffle=False,
num_workers=8)
model = my_RNN_Net(weight).cuda()
model.init_weights()
train_loss_log = []
train_acc_log = []
val_loss_log = []
val_acc_log = []
loss = nn.CrossEntropyLoss()
optimizer = torch.optim.Adam(model.parameters(), lr=0.001)
# optimizer = torch.optim.SGD(model.parameters(), lr=1)
best_acc = 0.0
for epoch in range(num_epoch):
# print(model.embedding.weight)
epoch_start_time = time.time()
train_acc = 0.0
train_loss = 0.0
val_acc = 0.0
val_loss = 0.0
print('Epoch [%03d/%03d]' % (epoch + 1, num_epoch))
model.train()
batch_num = len(train_loader)
# msg = '...........'
print('...........')
for i, data in enumerate(train_loader):
# print (msg,end = '', flush=True)
optimizer.zero_grad()
#########GPU#########
train_pred = model(data[0].cuda())
batch_loss = loss(train_pred, data[1].cuda())
batch_loss.backward()
# torch.nn.utils.clip_grad_norm_(model.parameters(), 0.25)
optimizer.step()
train_acc += np.sum(
np.argmax(train_pred.cpu().data.numpy(), axis=1) ==
data[1].numpy())
train_loss += batch_loss.item()
model.eval()
val_batch_num = len(val_loader)
for i, data in enumerate(val_loader):
#########GPU#########
val_pred = model(data[0].cuda())
batch_loss = loss(val_pred, data[1].cuda())
val_acc += np.sum(
np.argmax(val_pred.cpu().data.numpy(), axis=1) ==
data[1].numpy())
val_loss += batch_loss.item()
val_acc = val_acc / val_set.__len__()
train_acc = train_acc / train_set.__len__()
print(
'[%0 3d/%03d] %2.2f sec(s) train_acc: %3.6f Loss: %3.6f | val_acc: %3.6f val_loss: %3.6f'
% (batch_num, batch_num, time.time() - epoch_start_time, train_acc,
train_loss / batch_num, val_acc, val_loss / val_batch_num))
print('')
# log
train_loss_log.append(train_loss / batch_num)
train_acc_log.append(train_acc)
val_loss_log.append(val_loss / val_batch_num)
val_acc_log.append(val_acc)
if (val_acc > best_acc):
# with open('/content/drive/My Drive/ML2019/hw6/models/acc.txt', 'w') as f:
with open('models/acc.txt', 'w') as f:
f.write('-BEST MODEL -\nepoch: ' + str(epoch) + '/' +
str(num_epoch) + '\t' + 'val_acc: ' + str(val_acc) +
'\n')
# torch.save(
# model, '/content/drive/My Drive/ML2019/hw6/models/best_model.pth')
torch.save(model, 'models/best_model.pth')
best_acc = val_acc
print('** Best Model Updated! ***\n')
# torch.save(model,
# '/content/drive/My Drive/ML2019/hw6/models/final_model.pth')
torch.save(model, 'models/final_model.pth')
# log
train_loss_log = np.array(train_loss_log)
train_acc_log = np.array(train_acc_log)
val_loss_log = np.array(val_loss_log)
val_acc_log = np.array(val_acc_log)