def preload_data(self):
print('Pre-loading the data. This may take a while...')
t = Timer()
t.tic()
self.is_preload = False
npy_path = os.path.join(
self.image_path, self.image_files[self.num_samples - 1]).replace(
'images', 'gt_npy').replace('.jpg', '.npz')
if os.path.isfile(npy_path):
pass
else:
os.makedirs(self.image_path.replace('images', 'images_resized'))
os.makedirs(self.image_path.replace('images', 'gt_npy'))
self.blob_list = [_ for _ in range(self.num_samples)]
for i in range(self.num_samples):
img, den, count = self.load_index(i)
den = den.astype(np.float32)
image_path = os.path.join(self.image_path, self.image_files[i])
img.save(image_path.replace('images', 'images_resized'),
quality=100)
save_npy(
image_path.replace('images',
'gt_npy').replace('.jpg', '.npz'), den)
if i % 50 == 0:
print("loaded {}/{} samples".format(i, self.num_samples))
duration = t.toc(average=False)
print('Completed loading ', len(self.blob_list), ' files, time: ',
duration)
self.is_preload = True
def preload(self):
self.ncls = {
k: np.random.choice([0, 1], p=pro)
for k, pro in self.pro_dict.items()
}
self.choices = {
k: random.randint(0,
len(self.sample_dict[k][ncl]) - 1)
for k, ncl in self.ncls.items()
}
self.loaded = {}
indexs = [self.sample_dict[self.patch_list[i][0] + 1]\
[self.ncls[self.patch_list[i][0] + 1]]\
[self.choices[self.patch_list[i][0] + 1]]\
[0] for i in range(self.get_num_samples())]
indexs = set(indexs)
load_timer = Timer()
load_timer.tic()
with concurrent.futures.ThreadPoolExecutor(max_workers=8) as executor:
for blob in executor.map(lambda i: (i, self.dataloader[i]),
indexs):
self.loaded[blob[0]] = blob[1]
print("re-prior crop: %f s" % load_timer.toc(average=False))
def test_model_origin(net,
data_loader,
save_output=False,
save_path=None,
test_fixed_size=-1,
test_batch_size=1,
gpus=None):
timer = Timer()
timer.tic()
net.eval()
mae = 0.0
mse = 0.0
detail = ''
if save_output:
print save_path
for i, blob in enumerate(data_loader.get_loader(test_batch_size)):
if (i * len(gpus) + 1) % 100 == 0:
print "testing %d" % (i + 1)
if save_output:
index, fname, data, mask, gt_dens, gt_count = blob
else:
index, fname, data, mask, gt_count = blob
with torch.no_grad():
dens = net(data)
if save_output:
image = data.squeeze_().mul_(torch.Tensor([0.229,0.224,0.225]).view(3,1,1))\
.add_(torch.Tensor([0.485,0.456,0.406]).view(3,1,1)).data.cpu().numpy()
dgen.save_image(
image.transpose((1, 2, 0)) * 255.0, save_path,
fname[0].split('.')[0] + "_0_img.png")
gt_dens = gt_dens.data.cpu().numpy()
density_map = dens.data.cpu().numpy()
dgen.save_density_map(gt_dens.squeeze(), save_path,
fname[0].split('.')[0] + "_1_gt.png")
dgen.save_density_map(density_map.squeeze(), save_path,
fname[0].split('.')[0] + "_2_et.png")
_gt_count = gt_dens.sum().item()
del gt_dens
gt_count = gt_count.item()
et_count = dens.sum().item()
del data, dens
detail += "index: {}; fname: {}; gt: {}; et: {};\n".format(
i, fname[0].split('.')[0], gt_count, et_count)
mae += abs(gt_count - et_count)
mse += ((gt_count - et_count) * (gt_count - et_count))
mae = mae / len(data_loader)
mse = np.sqrt(mse / len(data_loader))
duration = timer.toc(average=False)
print "testing time: %d" % duration
return mae, mse, detail
def demo(symbol_name, params_path, img_dir):
timer = Timer()
model = get_symbol(symbol_name)()
restore_weights(model, params_path)
for img_path in Path(img_dir).glob('*.png'):
img = Image.open(img_path)
inputs = setup_data(img)
timer.tic()
num = eval(model, inputs)
costs = timer.toc()
print("the number in image %s is %d || forward costs %.4fs" %
(img_path, num, costs))
print("average costs: %.4fs" % (timer.average_time))
def preload_data(self):
print ('Pre-loading the data. This may take a while...')
t = Timer()
t.tic()
self.blob_list = [_ for _ in range(self.num_samples)]
self.is_preload = False
for i in range(self.num_samples):
self.blob_list[i] = (self.load_index(i))
if i % 50 == 0:
print ("loaded {}/{} samples".format(i, self.num_samples))
duration = t.toc(average=False)
print ('Completed loading ' ,len(self.blob_list), ' files, time: ', duration)
self.is_preload = True
def train(net, train_loader,optimizer, num_epochs):
log_file = open(args.SAVE_ROOT+"/"+args.Dataset+"_training.log","w",1)
log_print("Training ....", color='green', attrs=['bold'])
# training
train_loss = 0
step_cnt = 0
re_cnt = False
t = Timer()
t.tic()
for epoch in range(1,num_epochs+1):
step = -1
train_loss = 0
for blob in train_loader:
step = step + 1
im_data = blob['data']
gt_data = blob['gt_density']
density_map = net(im_data, gt_data)
loss = net.loss
train_loss += loss.data
step_cnt += 1
optimizer.zero_grad()
loss.backward()
optimizer.step()
if step % disp_interval == 0:
duration = t.toc(average=False)
fps = step_cnt / duration
gt_count = np.sum(gt_data)
density_map = density_map.data.cpu().numpy()
et_count = np.sum(density_map)
utils.save_results(im_data,gt_data,density_map, args.SAVE_ROOT)
log_text = 'epoch: %4d, step %4d, Time: %.4fs, gt_cnt: %4.1f, et_cnt: %4.1f' % (epoch,
step, 1./fps, gt_count,et_count)
log_print(log_text, color='green', attrs=['bold'])
re_cnt = True
if re_cnt:
t.tic()
re_cnt = False
return net
train_loss = 0
outer_timer = Timer()
outer_timer.tic()
'''regenerate crop patches'''
data_loader_train.shuffle_list()
load_timer = Timer()
load_time = 0.0
iter_timer = Timer()
iter_time = 0.0
for i, datas in enumerate(\
DataLoader(data_loader_train, batch_size=opt.batch_size, \
shuffle=True, num_workers=4,drop_last=True)):
step_cnt += 1
if i != 0:
load_time += load_timer.toc(average=False)
iter_timer.tic()
img_data = datas[0]
gt_data = datas[1]
raw_patch = datas[2]
gt_count = datas[3]
fnames = [data_loader_train.query_fname(i) for i in datas[4]]
batch_size = len(fnames)
step = step + 1
net.train()
density_map = net(img_data, gt_data)
net.backward(loss_scale)
loss_value = float(net.loss.item())
def test(net,test_path,optimizer, num_epochs, Dataset=args.Dataset):
if Dataset=="fdst":
num_sessions=3
test_len=750
low_limit=451
high_limit=750
else:
num_sessions=8
test_len=2000
low_limit=1201
high_limit=2000
#print(num_sessions)
sessions_list = []
ses_size = 100
for i in range(low_limit, high_limit,ses_size):
sessions_list.append(i)
sessions_list.append(test_len)
#print("test list: ", sessions_list)
for test_inc in range(len(sessions_list)-1):
start_frame = sessions_list[test_inc]
end_frame = sessions_list[test_inc+1]
#print('start:,end:', (start_frame,end_frame))
test_loader = ImageDataLoader_Val_Test(test_path, None,'test_split',start_frame, end_frame, shuffle=False, gt_downsample=True, pre_load=True, Dataset=args.Dataset)
log_file = open(args.SAVE_ROOT+"/"+args.Dataset+"_test.log","w",1)
log_print("test/Self Training ....", color='green', attrs=['bold'])
# training
train_loss = 0
step_cnt = 0
re_cnt = False
t = Timer()
t.tic()
for epoch in range(1,num_epochs+1):
step = -1
train_loss = 0
for blob in test_loader:
step = step + 1
im_data = blob['data']
net.training = False
gt_data = net(im_data)
gt_data = gt_data.cpu().detach().numpy()
net.training = True
density_map = net(im_data, gt_data)
loss = net.loss
train_loss += loss.data
step_cnt += 1
optimizer.zero_grad()
loss.backward()
optimizer.step()
if step % disp_interval == 0:
duration = t.toc(average=False)
fps = step_cnt / duration
gt_count = np.sum(gt_data)
density_map = density_map.data.cpu().numpy()
et_count = np.sum(density_map)
utils.save_results(im_data,gt_data,density_map, args.SAVE_ROOT)
log_text = 'epoch: %4d, step %4d, Time: %.4fs, gt_cnt: %4.1f, et_cnt: %4.1f' % (epoch,
step, 1./fps, gt_count,et_count)
log_print(log_text, color='green', attrs=['bold'])
re_cnt = True
if re_cnt:
t.tic()
re_cnt = False
torch.backends.cudnn.enabled = True
torch.backends.cudnn.benchmark = False
session= str(sessions_list[test_inc])
network.save_net(args.SAVE_ROOT+'/'+args.Dataset+ session +'_self_trained_model_test.h5', net)
output_dir = './densitymaps/' + args.Dataset + session
net.cuda()
net.eval()
all_test_loader = ImageDataLoader(test_path, None, 'test_split', shuffle=False, gt_downsample=True, pre_load=True , Dataset=args.Dataset)
for blob in all_test_loader:
im_data = blob['data']
net.training = False
density_map = net(im_data)
density_map = density_map.data.cpu().numpy()
new_dm= density_map.reshape([ density_map.shape[2], density_map.shape[3] ])
np.savetxt(output_dir + '_output_' + blob['fname'].split('.')[0] +'.csv', new_dm, delimiter=',', fmt='%.6f')
return net
im_data = np.flip(im_data, 3).copy()
gt_data = np.flip(gt_data, 3).copy()
if np.random.uniform() > 0.5:
#add random noise to the input image
im_data = im_data + np.random.uniform(-10, 10, size=im_data.shape)
density_map = net(im_data, gt_data, gt_class_label, class_wts)
loss = net.loss
train_loss += loss.data[0]
step_cnt += 1
optimizer.zero_grad()
loss.backward()
optimizer.step()
if step % disp_interval == 0:
duration = t.toc(average=False)
fps = step_cnt / duration
gt_count = np.sum(gt_data)
density_map = density_map.data.cpu().numpy()
et_count = np.sum(density_map)
utils.save_results(im_data, gt_data, density_map, output_dir)
log_text = 'epoch: %4d, step %4d, Time: %.4fs, gt_cnt: %4.1f, et_cnt: %4.1f' % (
epoch, step, 1. / fps, gt_count, et_count)
log_print(log_text, color='green', attrs=['bold'])
re_cnt = True
if re_cnt:
t.tic()
re_cnt = False
if (epoch % 2 == 0):
def test_model_patches(net,
data_loader,
save_output=False,
save_path=None,
test_fixed_size=-1,
test_batch_size=1,
gpus=None):
timer = Timer()
timer.tic()
net.eval()
mae = 0.0
mse = 0.0
detail = ''
if save_output:
print save_path
for i, blob in enumerate(data_loader.get_loader(1)):
if (i + 1) % 10 == 0:
print "testing %d" % (i + 1)
if save_output:
index, fname, data, mask, gt_dens, gt_count = blob
else:
index, fname, data, mask, gt_count = blob
data = data.squeeze_()
if len(data.shape) == 3:
'image small than crop size'
data = data.unsqueeze_(dim=0)
mask = mask.squeeze_()
num_patch = len(data)
batches = zip([
i * test_batch_size
for i in range(num_patch // test_batch_size +
int(num_patch % test_batch_size != 0))
], [(i + 1) * test_batch_size
for i in range(num_patch // test_batch_size)] + [num_patch])
with torch.no_grad():
dens_patch = []
for batch in batches:
bat = data[slice(*batch)]
dens = net(bat).cpu()
dens_patch += [dens]
if args.test_fixed_size != -1:
H, W = mask.shape
_, _, fixed_size = data[0].shape
assert args.test_fixed_size == fixed_size
density_map = torch.zeros((H, W))
for dens_slice, (x, y) in zip(
itertools.chain(*dens_patch),
itertools.product(range(W / fixed_size),
range(H / fixed_size))):
density_map[y * fixed_size:(y + 1) * fixed_size, x *
fixed_size:(x + 1) * fixed_size] = dens_slice
H = mask.sum(dim=0).max().item()
W = mask.sum(dim=1).max().item()
density_map = density_map.masked_select(mask).view(H, W)
else:
density_map = dens_patch[0]
gt_count = gt_count.item()
et_count = density_map.sum().item()
if save_output:
image = data.mul_(torch.Tensor([0.229,0.224,0.225]).view(3,1,1))\
.add_(torch.Tensor([0.485,0.456,0.406]).view(3,1,1))
if args.test_fixed_size != -1:
H, W = mask.shape
_, _, fixed_size = data[0].shape
assert args.test_fixed_size == fixed_size
inital_img = torch.zeros((3, H, W))
for img_slice, (x, y) in zip(
image,
itertools.product(range(W / fixed_size),
range(H / fixed_size))):
inital_img[:, y * fixed_size:(y + 1) * fixed_size, x *
fixed_size:(x + 1) * fixed_size] = img_slice
H = mask.sum(dim=0).max().item()
W = mask.sum(dim=1).max().item()
inital_img = inital_img.masked_select(mask).view(3, H, W)
image = inital_img
image = image.data.cpu().numpy()
dgen.save_image(
image.transpose((1, 2, 0)) * 255.0, save_path,
fname[0].split('.')[0] + "_0_img.png")
gt_dens = gt_dens.data.cpu().numpy()
density_map = density_map.data.cpu().numpy()
dgen.save_density_map(gt_dens.squeeze(), save_path,
fname[0].split('.')[0] + "_1_gt.png")
dgen.save_density_map(density_map.squeeze(), save_path,
fname[0].split('.')[0] + "_2_et.png")
del gt_dens
del data, dens
detail += "index: {}; fname: {}; gt: {}; et: {};\n".format(
i, fname[0].split('.')[0], gt_count, et_count)
mae += abs(gt_count - et_count)
mse += ((gt_count - et_count) * (gt_count - et_count))
mae = mae / len(data_loader)
mse = np.sqrt(mse / len(data_loader))
duration = timer.toc(average=False)
print "testing time: %d" % duration
return mae, mse, detail
def test_model_origin(net,
data_loader,
save_output=False,
save_path=None,
test_fixed_size=-1,
test_batch_size=1,
gpus=None,
args=None):
timer = Timer()
timer.tic()
net.eval()
mae = 0.0
mse = 0.0
detail = ''
if args.save_txt:
save_txt_path = save_path.replace('density_maps', 'loc_txt_test')
if not os.path.exists(save_txt_path):
os.mkdir(save_txt_path)
record = open(
save_txt_path +
'/DLA_loc_test_thr_{:.02f}.txt'.format(args.det_thr), 'w+')
record2 = open(save_txt_path + '/DLA_cnt_test_den.txt', 'w+')
if save_output:
print(save_path)
for i, blob in enumerate(
data_loader.get_loader(test_batch_size,
num_workers=args.num_workers)):
if (i * len(gpus) + 1) % 100 == 0:
print("testing %d" % (i + 1))
if save_output:
index, fname, data, mask, gt_dens, gt_count = blob
else:
index, fname, data, mask, gt_count = blob
if not args.test_patch:
with torch.no_grad():
dens, dm = net(data)
dens = dens.sigmoid_()
dens_nms = network._nms(dens.detach())
dens_nms = dens_nms.data.cpu().numpy()
dm = dm.data.cpu().numpy()
else: #TODO
dens, dens_nms, dm = test_patch(data)
dens_nms = dens_nms.data.cpu().numpy()
dm = dm.data.cpu().numpy()
dm[dm < 0] = 0.0
gt_count = gt_count.item()
# et_count = dens.sum().item()
et_count = np.sum(
dens_nms.reshape(test_batch_size, -1) >= args.det_thr, axis=-1)[0]
et_count_dm = np.sum(dm.reshape(test_batch_size, -1), axis=-1)[0]
if save_output:
image = data.clone().squeeze_().mul_(torch.Tensor([0.229, 0.224, 0.225]).view(3, 1, 1)) \
.add_(torch.Tensor([0.485, 0.456, 0.406]).view(3, 1, 1)).data.cpu().numpy()
dgen.save_image(
image.transpose((1, 2, 0)) * 255.0, save_path,
fname[0].split('.')[0] + "_0_img.jpg")
gt_dens = gt_dens.data.cpu().numpy()
density_map = dens.data.cpu().numpy()
dgen.save_density_map(gt_dens.squeeze(), save_path,
fname[0].split('.')[0] + "_1_gt.jpg",
gt_count)
dgen.save_density_map(density_map.squeeze(), save_path,
fname[0].split('.')[0] + "_2_et.jpg")
dens_mask = dens_nms >= args.det_thr
dgen.save_heatmep_pred(dens_mask.squeeze(), save_path,
fname[0].split('.')[0] + "_3_et.jpg",
et_count)
_gt_count = gt_dens.sum().item()
del gt_dens
if args.save_txt:
ori_img = Image.open(
os.path.join(data_loader.dataloader.image_path, fname[0]))
ori_w, ori_h = ori_img.size
h, w = data.shape[2], data.shape[3]
ratio_w = float(ori_w) / w
ratio_h = float(ori_h) / h
dens_nms[dens_nms >= args.det_thr] = 1
dens_nms[dens_nms < args.det_thr] = 0
ids = np.array(np.where(dens_nms == 1)) # y,x
ori_ids_y = ids[2, :] * ratio_h + ratio_h / 2
ori_ids_x = ids[3, :] * ratio_w + ratio_w / 2
ids = np.vstack((ori_ids_x, ori_ids_y)).astype(np.int16) # x,y
loc_str = ''
for i_id in range(ids.shape[1]):
loc_str = loc_str + ' ' + str(ids[0][i_id]) + ' ' + str(
ids[1][i_id]) # x, y
if i == len(data_loader) - 1:
record.write('{filename} {pred:d}{loc_str}'.format(
filename=fname[0].split('.')[0],
pred=et_count,
loc_str=loc_str))
record2.write('{filename} {pred:0.2f}'.format(
filename=fname[0].split('.')[0], pred=float(et_count_dm)))
else:
record.write('{filename} {pred:d}{loc_str}\n'.format(
filename=fname[0].split('.')[0],
pred=et_count,
loc_str=loc_str))
record2.write('{filename} {pred:0.2f}\n'.format(
filename=fname[0].split('.')[0], pred=float(et_count_dm)))
del data, dens
detail += "index: {}; fname: {}; gt: {}; et: {}; dif: {};\n".format(
i, fname[0].split('.')[0], gt_count, et_count, gt_count - et_count)
mae += abs(gt_count - et_count)
mse += ((gt_count - et_count) * (gt_count - et_count))
mae = mae / len(data_loader)
mse = np.sqrt(mse / len(data_loader))
duration = timer.toc(average=False)
if args.save_txt:
record.close()
print("testing time: %d" % duration)
return mae, mse, detail
def main():
# define output folder
output_dir = './saved_models/'
log_dir = './mae_mse/'
checkpoint_dir = './checkpoint/'
train_path = '/home/jake/Desktop/Projects/Python/dataset/SH_B/cooked/train/images'
train_gt_path = '/home/jake/Desktop/Projects/Python/dataset/SH_B/cooked/train/ground_truth'
val_path = '/home/jake/Desktop/Projects/Python/dataset/SH_B/cooked/val/images'
val_gt_path = '/home/jake/Desktop/Projects/Python/dataset/SH_B/cooked/val/ground_truth'
# last checkpoint
checkpointfile = os.path.join(checkpoint_dir, 'checkpoint.94.pth.tar')
# some description
method = 'mcnn'
dataset_name = 'SH_B'
# log file
f_train_loss = open(os.path.join(log_dir, "train_loss.csv"), "a+")
f_val_loss = open(os.path.join(log_dir, "val_loss.csv"), "a+")
# Training configuration
start_epoch = 0
end_epoch = 97
lr = 0.00001
# momentum = 0.9
disp_interval = 1000
# log_interval = 250
# Flag
CONTINUE_TRAIN = True
# Tensorboard config
# use_tensorboard = False
# save_exp_name = method + '_' + dataset_name + '_' + 'v1'
# remove_all_log = False # remove all historical experiments in TensorBoard
# exp_name = None # the previous experiment name in TensorBoard
# -----------------------------------------------------------------------------------------
rand_seed = 64678
if rand_seed is not None:
np.random.seed(rand_seed)
torch.manual_seed(rand_seed)
torch.cuda.manual_seed(rand_seed)
# Define network
net = CrowdCounter()
network.weights_normal_init(net, dev=0.01)
# net.cuda()
net.train()
# params = list(net.parameters())
optimizer = torch.optim.Adam(
filter(lambda p: p.requires_grad, net.parameters()), lr=lr)
if not os.path.exists(output_dir):
os.mkdir(output_dir)
# # tensorboad
# use_tensorboard = use_tensorboard and CrayonClient is not None
# if use_tensorboard:
# cc = CrayonClient(hostname='127.0.0.1')
# if remove_all_log:
# cc.remove_all_experiments()
# if exp_name is None:
# exp_name = save_exp_name
# exp = cc.create_experiment(exp_name)
# else:
# exp = cc.open_experiment(exp_name)
# training param
if CONTINUE_TRAIN:
net, optimizer, start_epoch = utils.load_checkpoint(
net, optimizer, filename=checkpointfile)
train_loss = 0
step_cnt = 0
re_cnt = False
t = Timer()
t.tic()
# Load data
data_loader = ImageDataLoader(
train_path, train_gt_path, shuffle=True, gt_downsample=True, pre_load=True)
data_loader_val = ImageDataLoader(
val_path, val_gt_path, shuffle=False, gt_downsample=True, pre_load=True)
best_mae = sys.maxsize
# Start training
for this_epoch in range(start_epoch, end_epoch-1):
step = -1
train_loss = 0
for blob in data_loader:
step += 1
img_data = blob['data']
gt_data = blob['gt_density']
et_data = net(img_data, gt_data)
loss = net.loss
train_loss += loss.data
step_cnt += 1
optimizer.zero_grad()
loss.backward()
optimizer.step()
if step % disp_interval == 0:
duration = t.toc(average=False)
fps = step_cnt / duration
gt_count = np.sum(gt_data)
et_data = et_data.data.cpu().numpy()
et_count = np.sum(et_data)
utils.save_results(img_data, gt_data, et_data, output_dir,
fname="{}.{}.png".format(this_epoch, step))
log_text = 'epoch: %4d, step %4d, Time: %.4fs, gt_cnt: %4.1f, et_cnt: %4.1f' % (this_epoch,
step, 1./fps, gt_count, et_count)
log_print(log_text, color='green', attrs=['bold'])
re_cnt = True
if re_cnt:
t.tic()
re_cnt = False
# Save checkpoint
state = {'epoch': this_epoch, 'state_dict': net.state_dict(),
'optimizer': optimizer.state_dict()}
cp_filename = "checkpoint.{}.pth.tar".format(this_epoch)
torch.save(state, os.path.join(checkpoint_dir, cp_filename))
# ========================== END 1 EPOCH==================================================================================
train_mae, train_mse = evaluate_network(net, data_loader)
f_train_loss.write("{},{}\n".format(train_mae, train_mse))
log_text = 'TRAINING - EPOCH: %d, MAE: %.1f, MSE: %0.1f' % (
this_epoch, train_mae, train_mse)
log_print(log_text, color='green', attrs=['bold'])
# =====================================================VALIDATION=========================================================
# calculate error on the validation dataset
val_mae, val_mse = evaluate_network(net, data_loader_val)
f_val_loss.write("{},{}\n".format(val_mae, val_mse))
log_text = 'VALIDATION - EPOCH: %d, MAE: %.1f, MSE: %0.1f' % (
this_epoch, val_mae, val_mse)
log_print(log_text, color='green', attrs=['bold'])
# SAVE model
is_save = False
if val_mae <= best_mae:
if val_mae < best_mae:
is_save = True
best_mae = val_mae
best_mse = val_mse
else:
if val_mse < best_mse:
is_save = True
best_mse = val_mse
if is_save:
save_name = os.path.join(output_dir, '{}_{}_{}.h5'.format(
method, dataset_name, this_epoch))
network.save_net(save_name, net)
best_model = '{}_{}_{}.h5'.format(method, dataset_name, this_epoch)
log_text = 'BEST MAE: %0.1f, BEST MSE: %0.1f, BEST MODEL: %s' % (
best_mae, best_mse, best_model)
log_print(log_text, color='green', attrs=['bold'])
# if use_tensorboard:
# exp.add_scalar_value('MAE', mae, step=epoch)
# exp.add_scalar_value('MSE', mse, step=epoch)
# exp.add_scalar_value('train_loss', train_loss /
# data_loader.get_num_samples(), step=epoch)
f_train_loss.close()
f_val_loss.close()