def main():
args = get_arguments()
SETTING = Dict(yaml.safe_load(open(os.path.join('arguments',args.arg+'.yaml'), encoding='utf8')))
print(args)
args.device = list (map(str,args.device))
os.environ["CUDA_VISIBLE_DEVICES"] = ",".join(args.device)
# image transformer
transform = transforms.Compose([
transforms.Resize((SETTING.imsize, SETTING.imsize)),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
])
if args.dataset == 'coco':
val_dset = CocoDset(root=SETTING.root_path, img_dir='val2017', ann_dir='annotations/captions_val2017.json', transform=transform)
val_loader = DataLoader(val_dset, batch_size=SETTING.batch_size, shuffle=False, num_workers=SETTING.n_cpu, collate_fn=collater)
vocab = Vocabulary(max_len=SETTING.max_len)
vocab.load_vocab(args.vocab_path)
imenc = ImageEncoder(SETTING.out_size, SETTING.cnn_type)
capenc = CaptionEncoder(len(vocab), SETTING.emb_size, SETTING.out_size, SETTING.rnn_type)
device = torch.device("cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
imenc = imenc.to(device)
capenc = capenc.to(device)
assert args.checkpoint is not None
print("loading model and optimizer checkpoint from {} ...".format(args.checkpoint), flush=True)
ckpt = torch.load(args.checkpoint, map_location=device)
imenc.load_state_dict(ckpt["encoder_state"])
capenc.load_state_dict(ckpt["decoder_state"])
begin = time.time()
dset = EmbedDset(val_loader, imenc, capenc, vocab, args)
print("database created | {} ".format(sec2str(time.time()-begin)), flush=True)
savedir = os.path.join("out", args.config_name)
if not os.path.exists(savedir):
os.makedirs(savedir, 0o777)
image = dset.embedded["image"]
caption = dset.embedded["caption"]
n_i = image.shape[0]
n_c = caption.shape[0]
all = np.concatenate([image, caption], axis=0)
emb_file = os.path.join(savedir, "embedding_{}.npy".format(n_i))
save_file = os.path.join(savedir, "{}.npy".format(SETTING.method))
vis_file = os.path.join(savedir, "{}.png".format(SETTING.method))
np.save(emb_file, all)
print("saved embeddings to {}".format(emb_file), flush=True)
dimension_reduction(emb_file, save_file, method=SETTING.method)
plot_embeddings(save_file, n_i, vis_file, method=SETTING.method)
def main():
args = get_arguments()
SETTING = Dict(
yaml.safe_load(
open(os.path.join('arguments', args.arg + '.yaml'),
encoding='utf8')))
print(args)
args.device = list(map(str, args.device))
os.environ["CUDA_VISIBLE_DEVICES"] = ",".join(args.device)
transform = transforms.Compose([
transforms.Resize((SETTING.imsize, SETTING.imsize)),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
])
if args.dataset == 'coco':
val_dset = CocoDset(root=SETTING.root_path,
img_dir='val2017',
ann_dir='annotations/captions_val2017.json',
transform=transform)
val_loader = DataLoader(val_dset,
batch_size=SETTING.batch_size,
shuffle=False,
num_workers=SETTING.n_cpu,
collate_fn=collater)
vocab = Vocabulary(max_len=SETTING.max_len)
vocab.load_vocab(args.vocab_path)
imenc = ImageEncoder(SETTING.out_size, SETTING.cnn_type)
capenc = CaptionEncoder(len(vocab), SETTING.emb_size, SETTING.out_size,
SETTING.rnn_type)
device = torch.device(
"cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
imenc = imenc.to(device)
capenc = capenc.to(device)
assert SETTING.checkpoint is not None
print("loading model and optimizer checkpoint from {} ...".format(
SETTING.checkpoint),
flush=True)
ckpt = torch.load(SETTING.checkpoint)
imenc.load_state_dict(ckpt["encoder_state"])
capenc.load_state_dict(ckpt["decoder_state"])
begin = time.time()
dset = EmbedDset(val_loader, imenc, capenc, vocab, args)
print("database created | {} ".format(sec2str(time.time() - begin)),
flush=True)
retrieve_i2c(dset, val_dset, args.image_path, imenc, transform)
retrieve_c2i(dset, val_dset, args.output_dir, args.caption, capenc, vocab)
def main():
args = parse_args()
print('BATCH_SIZE: {}'.format(args.batch_size))
print('EMBEDDING_DIM: {}'.format(args.embedding_dim))
print('DEC_HIDDEN_DIM: {}'.format(args.dec_hidden_dim))
print('LR: {}'.format(args.lr))
print('ENCODER DROPOUT: {}'.format(args.enc_dropout))
print('DECODER DROPOUT: {}'.format(args.dec_dropout))
print('EPOCHS: {}'.format(args.epochs))
print('LOG_INTERVAL: {}'.format(args.log_interval))
print('USE PRETRAINED: {}'.format(args.use_pretrained))
print('USE CURRICULUM LEARNING: {}'.format(args.use_curriculum_learning))
# Prepare data & split
dataset = ImageCaptionDataset(args.image_folder, args.caption_path)
train_set, test_set = dataset.random_split(train_portion=0.8)
train_dataloader = DataLoader(train_set, batch_size=args.batch_size, shuffle=True)
test_dataloader = DataLoader(test_set, batch_size=args.batch_size)
print('Training set size: {}'.format(len(train_set)))
print('Test set size: {}'.format(len(test_set)))
print('Vocab size: {}'.format(len(dataset.vocab)))
print('----------------------------')
# Create model & optimizer
encoder = ImageEncoder(device, pretrained=args.use_pretrained).to(device)
decoder = CaptionDecoder(device, len(dataset.vocab), embedding_dim=args.embedding_dim,
enc_hidden_dim=encoder.hidden_dim, dec_hidden_dim=args.dec_hidden_dim, dropout=args.dec_dropout,
use_pretrained_emb=args.use_pretrained, word_to_int=dataset.word_to_int).to(device)
enc_optimizer = torch.optim.Adam(encoder.parameters(), lr=args.lr)
dec_optimizer = torch.optim.Adam(decoder.parameters(), lr=args.lr)
# Train
train(encoder, decoder, enc_optimizer, dec_optimizer, train_dataloader, dataset, args)
# Save model
torch.save(encoder.cpu().state_dict(), args.output_encoder)
torch.save(decoder.cpu().state_dict(), args.output_decoder)
encoder.to(device)
decoder.to(device)
# Test
test(encoder, decoder, test_dataloader, dataset, args)
def main():
args = parse_args()
transform = transforms.Compose([
transforms.Resize((args.imsize, args.imsize)),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
])
if args.dataset == 'coco':
val_dset = CocoDataset(root=args.root_path,
imgdir='val2017',
jsonfile='annotations/captions_val2017.json',
transform=transform,
mode='all')
val_loader = DataLoader(val_dset,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.n_cpu,
collate_fn=collater_eval)
vocab = Vocabulary(max_len=args.max_len)
vocab.load_vocab(args.vocab_path)
imenc = ImageEncoder(args.out_size, args.cnn_type)
capenc = CaptionEncoder(len(vocab), args.emb_size, args.out_size,
args.rnn_type)
device = torch.device(
"cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
imenc = imenc.to(device)
capenc = capenc.to(device)
assert args.checkpoint is not None
print("loading model and optimizer checkpoint from {} ...".format(
args.checkpoint),
flush=True)
ckpt = torch.load(args.checkpoint)
imenc.load_state_dict(ckpt["encoder_state"])
capenc.load_state_dict(ckpt["decoder_state"])
begin = time.time()
dset = EmbedDataset(val_loader, imenc, capenc, vocab, args)
print("database created | {} ".format(sec2str(time.time() - begin)),
flush=True)
retrieve_i2c(dset, val_dset, imenc, vocab, args)
retrieve_c2i(dset, val_dset, capenc, vocab, args)
class Similarity(nn.Module):
def __init__(self, config: SimilarityConfig):
super(Similarity, self).__init__()
self.text_encoder = TextEncoder(config.product_text_encoder_config)
self.text_encoder = self.text_encoder.to(GlobalConfig.device)
self.image_encoder = ImageEncoder(config.product_image_encoder_config)
self.image_encoder = self.image_encoder.to(GlobalConfig.device)
self.linear = nn.Linear(config.mm_size, config.context_vector_size)
self.linear = self.linear.to(GlobalConfig.device)
def forward(self, context, text, text_length, image):
"""Forward.
Args:
context: Context (batch_size, ContextEncoderConfig.output_size).
text: Product text (batch_size, product_text_max_len).
text_length: Product text length (batch_size, ).
image: Product image (batch_size, 3, image_size, image_size).
Returns:
"""
batch_size = context.size(0)
sos = SOS_ID * torch.ones(batch_size, dtype=torch.long).view(-1, 1).to(
GlobalConfig.device)
# (batch_size)
# Concat SOS.
text = torch.cat((sos, text), 1).to(GlobalConfig.device)
# (batch_size, product_text_max_len)
text_length += 1
# (batch_size, )
encoded_text, _ = self.text_encoder(text, text_length)
# (batch_size, text_feat_size)
encoded_image = self.image_encoder(image, encoded_text)
# (batch_size, image_feat_size)
mm = torch.cat((encoded_text, encoded_image), 1)
mm = mm.to(GlobalConfig.device)
mm = self.linear(mm)
return cosine_similarity(context, mm)
def train(task: int, model_file_name: str):
"""Train model.
Args:
task (int): Task.
model_file_name (str): Model file name (saved or to be saved).
"""
# Check if data exists.
if not isfile(DatasetConfig.common_raw_data_file):
raise ValueError('No common raw data.')
# Load extracted common data.
common_data: CommonData = load_pkl(DatasetConfig.common_raw_data_file)
# Dialog data files.
train_dialog_data_file = DatasetConfig.get_dialog_filename(
task, TRAIN_MODE)
valid_dialog_data_file = DatasetConfig.get_dialog_filename(
task, VALID_MODE)
test_dialog_data_file = DatasetConfig.get_dialog_filename(task, TEST_MODE)
if not isfile(train_dialog_data_file):
raise ValueError('No train dialog data file.')
if not isfile(valid_dialog_data_file):
raise ValueError('No valid dialog data file.')
# Load extracted dialogs.
train_dialogs: List[TidyDialog] = load_pkl(train_dialog_data_file)
valid_dialogs: List[TidyDialog] = load_pkl(valid_dialog_data_file)
test_dialogs: List[TidyDialog] = load_pkl(test_dialog_data_file)
if task in {KNOWLEDGE_TASK}:
knowledge_data = KnowledgeData()
# Dataset wrap.
train_dataset = Dataset(
task,
common_data.dialog_vocab,
None, #common_data.obj_id,
train_dialogs,
knowledge_data if task == KNOWLEDGE_TASK else None)
valid_dataset = Dataset(
task,
common_data.dialog_vocab,
None, #common_data.obj_id,
valid_dialogs,
knowledge_data if task == KNOWLEDGE_TASK else None)
test_dataset = Dataset(
task,
common_data.dialog_vocab,
None, #common_data.obj_id,
test_dialogs,
knowledge_data if task == KNOWLEDGE_TASK else None)
print('Train dataset size:', len(train_dataset))
print('Valid dataset size:', len(valid_dataset))
print('Test dataset size:', len(test_dataset))
# Get initial embedding.
vocab_size = len(common_data.dialog_vocab)
embed_init = get_embed_init(common_data.glove,
vocab_size).to(GlobalConfig.device)
# Context model configurations.
context_text_encoder_config = ContextTextEncoderConfig(
vocab_size, embed_init)
context_image_encoder_config = ContextImageEncoderConfig()
context_encoder_config = ContextEncoderConfig()
# Context models.
context_text_encoder = TextEncoder(context_text_encoder_config)
context_text_encoder = context_text_encoder.to(GlobalConfig.device)
context_image_encoder = ImageEncoder(context_image_encoder_config)
context_image_encoder = context_image_encoder.to(GlobalConfig.device)
context_encoder = ContextEncoder(context_encoder_config)
context_encoder = context_encoder.to(GlobalConfig.device)
# Load model file.
model_file = join(DatasetConfig.dump_dir, model_file_name)
if isfile(model_file):
state = torch.load(model_file)
# if task != state['task']:
# raise ValueError("Task doesn't match.")
context_text_encoder.load_state_dict(state['context_text_encoder'])
context_image_encoder.load_state_dict(state['context_image_encoder'])
context_encoder.load_state_dict(state['context_encoder'])
# Task-specific parts.
if task == INTENTION_TASK:
intention_train(context_text_encoder, context_image_encoder,
context_encoder, train_dataset, valid_dataset,
test_dataset, model_file)
elif task == TEXT_TASK:
text_train(context_text_encoder, context_image_encoder,
context_encoder, train_dataset, valid_dataset, test_dataset,
model_file, common_data.dialog_vocab, embed_init)
elif task == RECOMMEND_TASK:
recommend_train(context_text_encoder, context_image_encoder,
context_encoder, train_dataset, valid_dataset,
test_dataset, model_file, vocab_size, embed_init)
elif task == KNOWLEDGE_TASK:
knowledge_attribute_train(context_text_encoder, context_image_encoder,
context_encoder, train_dataset,
valid_dataset, test_dataset, model_file,
knowledge_data.attribute_data,
common_data.dialog_vocab, embed_init)
def main():
# ignore warnings
#warnings.simplefilter('ignore')
args = get_arguments()
SETTING = Dict(yaml.safe_load(open(os.path.join('arguments',args.arg+'.yaml'), encoding='utf8')))
print(args)
args.device = list (map(str,args.device))
os.environ["CUDA_VISIBLE_DEVICES"] = ",".join(args.device)
#image transformer
train_transform = transforms.Compose([
transforms.Resize(SETTING.imsize_pre),
transforms.RandomCrop(SETTING.imsize),
transforms.RandomHorizontalFlip(),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
])
val_transform = transforms.Compose([
transforms.Resize(SETTING.imsize_pre),
transforms.CenterCrop(SETTING.imsize),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
])
# data load
if args.dataset == 'coco':
train_dset = CocoDset(root=SETTING.root_path,img_dir='train2017', ann_dir='annotations/captions_train2017.json', transform=train_transform)
val_dset = CocoDset(root=SETTING.root_path, img_dir='val2017', ann_dir='annotations/captions_val2017.json', transform=val_transform)
train_loader = DataLoader(train_dset, batch_size=SETTING.batch_size, shuffle=True, num_workers=SETTING.n_cpu, collate_fn=collater)
val_loader = DataLoader(val_dset, batch_size=SETTING.batch_size, shuffle=False, num_workers=SETTING.n_cpu, collate_fn=collater)
# setup vocab dict
vocab = Vocabulary(max_len=SETTING.max_len)
vocab.load_vocab(args.vocab_path)
# setup encoder
imenc = ImageEncoder(SETTING.out_size, SETTING.cnn_type)
capenc = CaptionEncoder(len(vocab), SETTING.emb_size, SETTING.out_size, SETTING.rnn_type, vocab.padidx)
device = torch.device("cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
imenc = imenc.to(device)
capenc = capenc.to(device)
# learning rate
cfgs = [{'params' : imenc.fc.parameters(), 'lr' : float(SETTING.lr_cnn)},
{'params' : capenc.parameters(), 'lr' : float(SETTING.lr_rnn)}]
# optimizer
if SETTING.optimizer == 'SGD':
optimizer = optim.SGD(cfgs, momentum=SETTING.momentum, weight_decay=SETTING.weight_decay)
elif SETTING.optimizer == 'Adam':
optimizer = optim.Adam(cfgs, betas=(SETTING.beta1, SETTING.beta2), weight_decay=SETTING.weight_decay)
elif SETTING.optimizer == 'RMSprop':
optimizer = optim.RMSprop(cfgs, alpha=SETTING.alpha, weight_decay=SETTING.weight_decay)
if SETTING.scheduler == 'Plateau':
scheduler = optim.lr_scheduler.ReduceLROnPlateau(optimizer, mode='max', factor=SETTING.dampen_factor, patience=SETTING.patience, verbose=True)
elif SETTING.scheduler == 'Step':
scheduler = optim.lr_scheduler.StepLR(optimizer, step_size=SETTING.patience, gamma=SETTING.dampen_factor)
# loss
lossfunc = PairwiseRankingLoss(margin=SETTING.margin, method=SETTING.method, improved=args.improved, intra=SETTING.intra, lamb=SETTING.imp_weight)
# if start from checkpoint
if args.checkpoint is not None:
print("loading model and optimizer checkpoint from {} ...".format(args.checkpoint), flush=True)
ckpt = torch.load(args.checkpoint)
imenc.load_state_dict(ckpt["encoder_state"])
capenc.load_state_dict(ckpt["decoder_state"])
optimizer.load_state_dict(ckpt["optimizer_state"])
if SETTING.scheduler != 'None':
scheduler.load_state_dict(ckpt["scheduler_state"])
offset = ckpt["epoch"]
data = ckpt["stats"]
bestscore = 0
for rank in [1, 5, 10, 20]:
bestscore += data["i2c_recall@{}".format(rank)] + data["c2i_recall@{}".format(rank)]
bestscore = int(bestscore)
# start new training
else:
offset = 0
bestscore = -1
if args.dataparallel:
print("Using Multiple GPU . . . ")
imenc = nn.DataParallel(imenc)
capenc = nn.DataParallel(capenc)
metrics = {}
es_cnt = 0
# training
assert offset < SETTING.max_epochs
for ep in range(offset, SETTING.max_epochs):
epoch = ep+1
# unfreeze cnn parameters
if epoch == SETTING.freeze_epoch:
if args.dataparallel:
optimizer.add_param_group({'params': imenc.module.cnn.parameters(), 'lr': float(SETTING.lr_cnn)})
else:
optimizer.add_param_group({'params': imenc.cnn.parameters(), 'lr': float(SETTING.lr_cnn)})
#train(1epoch)
train(epoch, train_loader, imenc, capenc, optimizer, lossfunc, vocab, args, SETTING)
#validate
data = validate(epoch, val_loader, imenc, capenc, vocab, args, SETTING)
totalscore = 0
for rank in [1, 5, 10, 20]:
totalscore += data["i2c_recall@{}".format(rank)] + data["c2i_recall@{}".format(rank)]
totalscore = int(totalscore)
#scheduler update
if SETTING.scheduler == 'Plateau':
scheduler.step(totalscore)
if SETTING.scheduler == 'Step':
scheduler.step()
# update checkpoint
if args.dataparallel:
ckpt = {
"stats": data,
"epoch": epoch,
"encoder_state": imenc.module.state_dict(),
"decoder_state": capenc.module.state_dict(),
"optimizer_state": optimizer.state_dict()
}
else:
ckpt = {
"stats": data,
"epoch": epoch,
"encoder_state": imenc.state_dict(),
"decoder_state": capenc.state_dict(),
"optimizer_state": optimizer.state_dict()
}
if SETTING.scheduler != 'None':
ckpt['scheduler_state'] = scheduler.state_dict()
# make savedir
savedir = os.path.join("models", args.arg)
if not os.path.exists(savedir):
os.makedirs(savedir)
#
for k, v in data.items():
if k not in metrics.keys():
metrics[k] = [v]
else:
metrics[k].append(v)
# save checkpoint
savepath = os.path.join(savedir, "epoch_{:04d}_score_{:03d}.ckpt".format(epoch, totalscore))
if int(totalscore) > int(bestscore):
print("score: {:03d}, saving model and optimizer checkpoint to {} ...".format(totalscore, savepath), flush=True)
bestscore = totalscore
torch.save(ckpt, savepath)
es_cnt = 0
else:
print("score: {:03d}, no improvement from best score of {:03d}, not saving".format(totalscore, bestscore), flush=True)
es_cnt += 1
# early stopping
if es_cnt == SETTING.es_cnt:
print("early stopping at epoch {} because of no improvement for {} epochs".format(epoch, SETTING.es_cnt))
break
print("done for epoch {:04d}".format(epoch), flush=True)
visualize(metrics, args, SETTING)
print("complete training")
""" 9) Load Weights """
LOAD_WEIGHTS = True
EMBEDDING_WEIGHT_FILE = 'checkpoints/BIGDATASET-weights-embedding-epoch-3.pt'
ENCODER_WEIGHT_FILE = 'checkpoints/BIGDATASET-weights-encoder-epoch-3.pt'
DECODER_WEIGHT_FILE = 'checkpoints/BIGDATASET-weights-decoder-epoch-3.pt'
if LOAD_WEIGHTS:
print("Loading pretrained weights...")
word_embedding.load_state_dict(torch.load(EMBEDDING_WEIGHT_FILE))
image_encoder.load_state_dict(torch.load(ENCODER_WEIGHT_FILE))
image_decoder.load_state_dict(torch.load(DECODER_WEIGHT_FILE))
""" 10) Device Setup"""
device = 'cuda:1'
device = torch.device(device)
word_embedding = word_embedding.to(device)
image_encoder = image_encoder.to(device)
image_decoder = image_decoder.to(device)
print(vocab.word_to_index('yooooo'))
for i, batch in enumerate(val_loader):
image_batch, word_ids_batch = batch[0].to(device), batch[1].to(device)
for image in image_batch:
sentence = generate_caption(image, image_encoder, image_decoder,
word_embedding, vocab, device)
image = denormalize(image.cpu())
plt.imshow(image)
plt.title(sentence)
plt.show()
plt.pause(1)
def main():
args = parse_args()
transform = transforms.Compose([
transforms.Resize((args.imsize, args.imsize)),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225]),
])
if args.dataset == "coco":
val_dset = CocoDataset(
root=args.root_path,
split="val",
transform=transform,
)
val_loader = DataLoader(
val_dset,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.n_cpu,
collate_fn=collater,
)
vocab = Vocabulary(max_len=args.max_len)
vocab.load_vocab(args.vocab_path)
imenc = ImageEncoder(args.out_size, args.cnn_type)
capenc = CaptionEncoder(len(vocab), args.emb_size, args.out_size,
args.rnn_type)
device = torch.device(
"cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
imenc = imenc.to(device)
capenc = capenc.to(device)
assert args.checkpoint is not None
print("loading model and optimizer checkpoint from {} ...".format(
args.checkpoint),
flush=True)
ckpt = torch.load(args.checkpoint, map_location=device)
imenc.load_state_dict(ckpt["encoder_state"])
capenc.load_state_dict(ckpt["decoder_state"])
begin = time.time()
dset = EmbedDataset(val_loader, imenc, capenc, vocab, args)
print("database created | {} ".format(sec2str(time.time() - begin)),
flush=True)
savedir = os.path.join("out", args.config_name)
if not os.path.exists(savedir):
os.makedirs(savedir, 0o777)
image = dset.embedded["image"]
caption = dset.embedded["caption"]
n_i = image.shape[0]
n_c = caption.shape[0]
all = np.concatenate([image, caption], axis=0)
emb_file = os.path.join(savedir, "embedding_{}.npy".format(n_i))
save_file = os.path.join(savedir, "{}.npy".format(args.method))
vis_file = os.path.join(savedir, "{}.png".format(args.method))
np.save(emb_file, all)
print("saved embeddings to {}".format(emb_file), flush=True)
dimension_reduction(emb_file, save_file, method=args.method)
plot_embeddings(save_file, n_i, vis_file, method=args.method)
def main():
args = parse_args()
transform = transforms.Compose([
transforms.Resize((args.imsize, args.imsize)),
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
])
if args.dataset == 'coco':
train_dset = CocoDataset(root=args.root_path,
transform=transform,
mode='one')
val_dset = CocoDataset(root=args.root_path,
imgdir='val2017',
jsonfile='annotations/captions_val2017.json',
transform=transform,
mode='all')
train_loader = DataLoader(train_dset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.n_cpu,
collate_fn=collater_train)
val_loader = DataLoader(val_dset,
batch_size=args.batch_size,
shuffle=False,
num_workers=args.n_cpu,
collate_fn=collater_eval)
vocab = Vocabulary(max_len=args.max_len)
vocab.load_vocab(args.vocab_path)
imenc = ImageEncoder(args.out_size, args.cnn_type)
capenc = CaptionEncoder(len(vocab), args.emb_size, args.out_size,
args.rnn_type)
device = torch.device(
"cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
imenc = imenc.to(device)
capenc = capenc.to(device)
optimizer = optim.SGD([{
'params': imenc.parameters(),
'lr': args.lr_cnn,
'momentum': args.mom_cnn
}, {
'params': capenc.parameters(),
'lr': args.lr_rnn,
'momentum': args.mom_rnn
}])
scheduler = optim.lr_scheduler.ReduceLROnPlateau(optimizer,
mode='max',
factor=0.1,
patience=args.patience,
verbose=True)
lossfunc = PairwiseRankingLoss(margin=args.margin,
method=args.method,
improved=args.improved,
intra=args.intra)
if args.checkpoint is not None:
print("loading model and optimizer checkpoint from {} ...".format(
args.checkpoint),
flush=True)
ckpt = torch.load(args.checkpoint)
imenc.load_state_dict(ckpt["encoder_state"])
capenc.load_state_dict(ckpt["decoder_state"])
optimizer.load_state_dict(ckpt["optimizer_state"])
scheduler.load_state_dict(ckpt["scheduler_state"])
offset = ckpt["epoch"]
else:
offset = 0
imenc = nn.DataParallel(imenc)
capenc = nn.DataParallel(capenc)
metrics = {}
assert offset < args.max_epochs
for ep in range(offset, args.max_epochs):
imenc, capenc, optimizer = train(ep + 1, train_loader, imenc, capenc,
optimizer, lossfunc, vocab, args)
data = validate(ep + 1, val_loader, imenc, capenc, vocab, args)
totalscore = 0
for rank in [1, 5, 10, 20]:
totalscore += data["i2c_recall@{}".format(rank)] + data[
"c2i_recall@{}".format(rank)]
scheduler.step(totalscore)
# save checkpoint
ckpt = {
"stats": data,
"epoch": ep + 1,
"encoder_state": imenc.module.state_dict(),
"decoder_state": capenc.module.state_dict(),
"optimizer_state": optimizer.state_dict(),
"scheduler_state": scheduler.state_dict()
}
if not os.path.exists(args.model_save_path):
os.makedirs(args.model_save_path)
savepath = os.path.join(
args.model_save_path,
"epoch_{:04d}_score_{:05d}.ckpt".format(ep + 1,
int(100 * totalscore)))
print(
"saving model and optimizer checkpoint to {} ...".format(savepath),
flush=True)
torch.save(ckpt, savepath)
print("done for epoch {}".format(ep + 1), flush=True)
for k, v in data.items():
if k not in metrics.keys():
metrics[k] = [v]
else:
metrics[k].append(v)
visualize(metrics, args)