From 653b3608ebe6272510b4c66f445f6f552fdc9ec9 Mon Sep 17 00:00:00 2001
From: natanielruiz <nataniel777@hotmail.com>
Date: 星期一, 11 九月 2017 05:53:10 +0800
Subject: [PATCH] Starting serious experiment without regression or iterative finetuning
---
code/train.py | 78 +++++++++++++++++++++++----------------
1 files changed, 46 insertions(+), 32 deletions(-)
diff --git a/code/train.py b/code/train.py
index 826793d..e339b10 100644
--- a/code/train.py
+++ b/code/train.py
@@ -43,6 +43,9 @@
default='', type=str)
parser.add_argument('--filename_list', dest='filename_list', help='Path to text file containing relative paths for every example.',
default='', type=str)
+ parser.add_argument('--output_string', dest='output_string', help='String appended to output snapshots.', default = '', type=str)
+ parser.add_argument('--alpha', dest='alpha', help='Regression loss coefficient.',
+ default=0.001, type=float)
args = parser.parse_args()
return args
@@ -51,26 +54,37 @@
b = []
b.append(model.conv1)
b.append(model.bn1)
+ for i in range(len(b)):
+ for module_name, module in b[i].named_modules():
+ if 'bn' in module_name:
+ module.eval()
+ for name, param in module.named_parameters():
+ yield param
+
+def get_non_ignored_params(model):
+ # Generator function that yields params that will be optimized.
+ b = []
b.append(model.layer1)
b.append(model.layer2)
b.append(model.layer3)
b.append(model.layer4)
for i in range(len(b)):
- for j in b[i].modules():
- for k in j.parameters():
- yield k
+ for module_name, module in b[i].named_modules():
+ if 'bn' in module_name:
+ module.eval()
+ for name, param in module.named_parameters():
+ yield param
-def get_non_ignored_params(model):
- # Generator function that yields params that will be optimized.
+def get_fc_params(model):
b = []
b.append(model.fc_yaw)
b.append(model.fc_pitch)
b.append(model.fc_roll)
b.append(model.fc_finetune)
for i in range(len(b)):
- for j in b[i].modules():
- for k in j.parameters():
- yield k
+ for module_name, module in b[i].named_modules():
+ for name, param in module.named_parameters():
+ yield param
def load_filtered_state_dict(model, snapshot):
# By user apaszke from discuss.pytorch.org
@@ -104,11 +118,7 @@
print 'Loading data.'
- # transformations = transforms.Compose([transforms.Scale(224),
- # transforms.RandomCrop(224),
- # transforms.ToTensor()])
-
- transformations = transforms.Compose([transforms.Scale(250),
+ transformations = transforms.Compose([transforms.Scale(240),
transforms.RandomCrop(224), transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])])
@@ -120,17 +130,19 @@
num_workers=2)
model.cuda(gpu)
+ softmax = nn.Softmax()
criterion = nn.CrossEntropyLoss().cuda()
reg_criterion = nn.MSELoss().cuda()
# Regression loss coefficient
- alpha = 0.01
+ alpha = 0.00
idx_tensor = [idx for idx in xrange(66)]
- idx_tensor = torch.FloatTensor(idx_tensor).cuda(gpu)
+ idx_tensor = Variable(torch.FloatTensor(idx_tensor)).cuda(gpu)
- optimizer = torch.optim.Adam([{'params': get_ignored_params(model), 'lr': args.lr},
- {'params': get_non_ignored_params(model), 'lr': args.lr * 10}],
- lr = args.lr)
+ optimizer = torch.optim.Adam([{'params': get_ignored_params(model), 'lr': 0},
+ {'params': get_non_ignored_params(model), 'lr': args.lr},
+ {'params': get_fc_params(model), 'lr': args.lr * 2}],
+ lr = args.lr)
print 'Ready to train network.'
@@ -153,24 +165,26 @@
loss_roll = criterion(pre_roll, label_roll)
# MSE loss
- yaw_predicted = F.softmax(pre_yaw)
- pitch_predicted = F.softmax(pre_pitch)
- roll_predicted = F.softmax(pre_roll)
+ yaw_predicted = softmax(pre_yaw)
+ pitch_predicted = softmax(pre_pitch)
+ roll_predicted = softmax(pre_roll)
- yaw_predicted = torch.sum(yaw_predicted.data * idx_tensor, 1)
- pitch_predicted = torch.sum(pitch_predicted.data * idx_tensor, 1)
- roll_predicted = torch.sum(roll_predicted.data * idx_tensor, 1)
+ yaw_predicted = torch.sum(yaw_predicted * idx_tensor, 1)
+ pitch_predicted = torch.sum(pitch_predicted * idx_tensor, 1)
+ roll_predicted = torch.sum(roll_predicted * idx_tensor, 1)
loss_reg_yaw = reg_criterion(yaw_predicted, label_yaw.float())
loss_reg_pitch = reg_criterion(pitch_predicted, label_pitch.float())
loss_reg_roll = reg_criterion(roll_predicted, label_roll.float())
+ # print yaw_predicted, label_yaw.float(), loss_reg_yaw
# Total loss
loss_yaw += alpha * loss_reg_yaw
loss_pitch += alpha * loss_reg_pitch
loss_roll += alpha * loss_reg_roll
loss_seq = [loss_yaw, loss_pitch, loss_roll]
+ # loss_seq = [loss_reg_yaw, loss_reg_pitch, loss_reg_roll]
grad_seq = [torch.Tensor(1).cuda(gpu) for _ in range(len(loss_seq))]
torch.autograd.backward(loss_seq, grad_seq)
optimizer.step()
@@ -180,13 +194,13 @@
%(epoch+1, num_epochs, i+1, len(pose_dataset)//batch_size, loss_yaw.data[0], loss_pitch.data[0], loss_roll.data[0]))
# if epoch == 0:
# torch.save(model.state_dict(),
- # 'output/snapshots/hopenet50_epoch_'+ str(i+1) + '.pkl')
+ # 'output/snapshots/' + args.output_string + '_iter_'+ str(i+1) + '.pkl')
# Save models at numbered epochs.
if epoch % 1 == 0 and epoch < num_epochs:
print 'Taking snapshot...'
torch.save(model.state_dict(),
- 'output/snapshots/hopenet50_epoch_'+ str(epoch+1) + '.pkl')
+ 'output/snapshots/' + args.output_string + '_epoch_'+ str(epoch+1) + '.pkl')
print 'Second phase of training (finetuning layer).'
for epoch in range(num_epochs_ft):
@@ -208,9 +222,9 @@
loss_roll = criterion(pre_roll, label_roll)
# MSE loss
- yaw_predicted = F.softmax(pre_yaw)
- pitch_predicted = F.softmax(pre_pitch)
- roll_predicted = F.softmax(pre_roll)
+ yaw_predicted = softmax(pre_yaw)
+ pitch_predicted = softmax(pre_pitch)
+ roll_predicted = softmax(pre_roll)
yaw_predicted = torch.sum(yaw_predicted.data * idx_tensor, 1)
pitch_predicted = torch.sum(pitch_predicted.data * idx_tensor, 1)
@@ -238,14 +252,14 @@
%(epoch+1, num_epochs_ft, i+1, len(pose_dataset)//batch_size, loss_yaw.data[0], loss_pitch.data[0], loss_roll.data[0], loss_angles.data[0]))
# if epoch == 0:
# torch.save(model.state_dict(),
- # 'output/snapshots/hopenet50_iter_'+ str(i+1) + '.pkl')
+ # 'output/snapshots/' + args.output_string + '_iter_'+ str(i+1) + '.pkl')
# Save models at numbered epochs.
if epoch % 1 == 0 and epoch < num_epochs_ft - 1:
print 'Taking snapshot...'
torch.save(model.state_dict(),
- 'output/snapshots/hopenet50_epoch_'+ str(num_epochs+epoch+1) + '.pkl')
+ 'output/snapshots/' + args.output_string + '_epoch_'+ str(num_epochs+epoch+1) + '.pkl')
# Save the final Trained Model
- torch.save(model.state_dict(), 'output/snapshots/hopenet50_epoch_' + str(num_epochs+epoch+1) + '.pkl')
+ torch.save(model.state_dict(), 'output/snapshots/' + args.output_string + '_epoch_' + str(num_epochs+epoch+1) + '.pkl')
--
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