def main():
rnd_seed = None
if rnd_seed:
torch.manual_seed(rnd_seed)
np.random.seed(rnd_seed)
# ---------------------------------------
# DATA LOADING
# ---------------------------------------
#result_path = "../result_lrn_0p001_rl/"
dict_file = "../dataset/German/vocab1.de"
entity_file = "../dataset/German/vocab1.en"
index2word = get_index2word(dict_file)
index2label = get_index2label(entity_file)
vocab_size = len(index2word)
label_size = len(index2label)
train_X, train_Y = minibatch_of_one_de('train')
val_X, val_Y = minibatch_of_one_de('valid')
test_X, test_Y = minibatch_of_one_de('test')
# ---------------------------------------
# HYPER PARAMETERS
# ---------------------------------------
# Using word2vec pre-trained embedding
#word_embedding_dim = 300
hidden_dim = 64
label_embedding_dim = 8
max_epoch = 100
# 0.001 is a good value
ner_learning_rate = 0.001
pretrained = 'de64'
word_embedding_dim = 64
# ---------------------------------------
# GPU OR NOT?
# ---------------------------------------
gpu = False
if gpu and rnd_seed:
torch.cuda.manual_seed(rnd_seed)
# ---------------------------------------
# MODEL INSTANTIATION
# ---------------------------------------
#attention = None
attention = "fixed"
load_model_dir = "../result_lrn_0p001_atten/"
load_model_filename = os.path.join(load_model_dir, "ckpt_46.pth")
batch_size = 1
machine = ner(word_embedding_dim, hidden_dim, label_embedding_dim, vocab_size,
label_size, learning_rate=ner_learning_rate,
minibatch_size=batch_size, max_epoch=max_epoch, train_X=None,
train_Y=None, val_X=val_X, val_Y=val_Y, test_X=test_X,
test_Y=test_Y, attention=attention, gpu=gpu,
pretrained=pretrained, load_model_filename=load_model_filename,
load_map_location="cpu")
if gpu:
machine = machine.cuda()
initial_beam_size = 3
# When you have only one beam, it does not make sense to consider
# max_beam_size larger than the size of your label vocabulary
max_beam_size = label_size
# ============ INIT RL =====================
parser = argparse.ArgumentParser(description='A3C')
parser.add_argument('--logdir', default='../result_lrn_0p001_atten_rl',
help='name of logging directory')
parser.add_argument('--lr', type=float, default=0.0001,
help='learning rate (default: 0.0001)')
parser.add_argument('--gamma', type=float, default=0.99,
help='discount factor for rewards (default: 0.99)')
parser.add_argument('--n_epochs', type=int, default=2,
help='number of epochs for training agent(default: 30)')
parser.add_argument('--entropy-coef', type=float, default=0.01,
help='entropy term coefficient (default: 0.01)')
parser.add_argument('--num-processes', type=int, default=2,
help='how many training processes to use (default: 4)')
parser.add_argument('--num-steps', type=int, default=20,
help='number of forward steps in A3C (default: 20)')
parser.add_argument('--tau', type=float, default=1.00,
help='parameter for GAE (default: 1.00)')
parser.add_argument('--value-loss-coef', type=float, default=0.5,
help='value loss coefficient (default: 0.5)')
parser.add_argument('--max-grad-norm', type=float, default=5,
help='value loss coefficient (default: 5)')
parser.add_argument('--seed', type=int, default=1,
help='random seed (default: 1)')
parser.add_argument('--max-episode-length', type=int, default=1000000,
help='maximum length of an episode (default: 1000000)')
parser.add_argument('--name', default='train',
help='name of the process')
parser.add_argument('--no-shared', default=False,
help='use an optimizer without shared momentum.')
args = parser.parse_args()
if not os.path.exists(args.logdir):
os.mkdir(args.logdir)
# For German dataset, f_score_index_begin = 5 (because O_INDEX = 4)
# For toy dataset, f_score_index_begin = 4 (because {0: '<s>', 1: '<e>', 2: '<p>', 3: '<u>', ...})
f_score_index_begin = 5
# RL reward coefficient
reward_coef_fscore = 1
reward_coef_beam_size = 0.1
logfile = open(os.path.join(args.logdir, "eval_test.txt"), "w+")
model = AdaptiveActorCritic(max_beam_size=max_beam_size, action_space=3)
# Marking as for evaluation
model.eval()
load_map_location = "cpu"
for epoch in range(0, args.n_epochs):
load_model_filename = os.path.join(args.logdir, "ckpt_" + str(epoch) + ".pth")
checkpoint = torch.load(load_model_filename, map_location=load_map_location)
model.load_state_dict(checkpoint["state_dict"])
fscore, total_beam_number_in_dataset, avg_beam_size, time_used = \
eval_adaptive(machine,
max_beam_size,
model,
test_X, test_Y, index2word, index2label,
"test", False, "adaptive", initial_beam_size,
reward_coef_fscore, reward_coef_beam_size,
f_score_index_begin,
args)
log_msg = "%d\t%f\t%d\t%f\t%f" % (epoch, fscore, total_beam_number_in_dataset, avg_beam_size, time_used)
print(log_msg)
print(log_msg, file=logfile, flush=True)
# End for epoch
logfile.close()
def main():
rnd_seed = None
if rnd_seed:
torch.manual_seed(rnd_seed)
np.random.seed(rnd_seed)
# ---------------------------------------
# DATA LOADING
# ---------------------------------------
#result_path = "../result_lrn_0p001_rl/"
dict_file = "../dataset/CCGbank/dict_word"
entity_file = "../dataset/CCGbank/dict_tag"
index2word = get_index2word(dict_file)
index2label = get_index2label(entity_file)
vocab_size = len(index2word)
label_size = len(index2label)
#train_X, train_Y = minibatch_of_one_de('train')
val_X, val_Y = minibatch_of_one_de('val')
test_X, test_Y = minibatch_of_one_de('test')
# ---------------------------------------
# HYPER PARAMETERS
# ---------------------------------------
# Using word2vec pre-trained embedding
word_embedding_dim = 300
hidden_dim = 512
label_embedding_dim = 512
max_epoch = 30
# 0.001 is a good value
ner_learning_rate = 0.001
pretrained = None
# ---------------------------------------
# GPU OR NOT?
# ---------------------------------------
gpu = True
if gpu and rnd_seed:
torch.cuda.manual_seed(rnd_seed)
# ---------------------------------------
# MODEL INSTANTIATION
# ---------------------------------------
#attention = None
attention = "fixed"
load_model_dir = "../result_ccg_lrn_0p001_atten/"
load_model_filename = os.path.join(load_model_dir, "ckpt_11.pth")
batch_size = 1
machine = ner(word_embedding_dim, hidden_dim, label_embedding_dim, vocab_size,
label_size, learning_rate=ner_learning_rate,
minibatch_size=batch_size, max_epoch=max_epoch, train_X=None,
train_Y=None, val_X=val_X, val_Y=val_Y, test_X=test_X,
test_Y=test_Y, attention=attention, gpu=gpu,
pretrained=pretrained, load_model_filename=load_model_filename)
if gpu:
machine = machine.cuda()
initial_beam_size = 3
# When you have only one beam, it does not make sense to consider
# max_beam_size larger than the size of your label vocabulary
max_beam_size = 10
# ============ INIT RL =====================
os.environ['OMP_NUM_THREADS'] = '4'
#os.environ['CUDA_VISIBLE_DEVICES'] = ""
parser = argparse.ArgumentParser(description='A3C')
parser.add_argument('--logdir', default='../result_ccg_atten_ckpt_11_rl_lrn_0p001_reward_0p02_beam_3_gpu',
help='name of logging directory')
parser.add_argument('--lr', type=float, default=0.001,
help='learning rate (default: 0.0001)')
parser.add_argument('--gamma', type=float, default=0.99,
help='discount factor for rewards (default: 0.99)')
parser.add_argument('--n_epochs', type=int, default=50,
help='number of epochs for training agent(default: 30)')
parser.add_argument('--entropy-coef', type=float, default=0.01,
help='entropy term coefficient (default: 0.01)')
parser.add_argument('--num-processes', type=int, default=1,
help='how many training processes to use (default: 4)')
parser.add_argument('--num-steps', type=int, default=20,
help='number of forward steps in A3C (default: 20)')
parser.add_argument('--tau', type=float, default=1.00,
help='parameter for GAE (default: 1.00)')
parser.add_argument('--value-loss-coef', type=float, default=0.5,
help='value loss coefficient (default: 0.5)')
parser.add_argument('--max-grad-norm', type=float, default=5,
help='value loss coefficient (default: 5)')
parser.add_argument('--seed', type=int, default=1,
help='random seed (default: 1)')
parser.add_argument('--max-episode-length', type=int, default=1000000,
help='maximum length of an episode (default: 1000000)')
parser.add_argument('--name', default='test',
help='name of the process')
parser.add_argument('--no-shared', default=False,
help='use an optimizer without shared momentum.')
args = parser.parse_args()
if not os.path.exists(args.logdir):
os.mkdir(args.logdir)
shared_model = AdaptiveActorCritic(max_beam_size=max_beam_size,
action_space=3)
#shared_model.share_memory()
shared_model.eval()
if args.no_shared:
shared_optimizer = None
# default here (False)
else:
shared_optimizer = SharedAdam(params=shared_model.parameters(),
lr=args.lr)
# optimizer = optim.Adam(shared_model.parameters(), lr=learning_rate)
shared_optimizer.share_memory()
# --------------------------------------------
# RL TRAINING
# --------------------------------------------
# For German dataset, f_score_index_begin = 5 (because O_INDEX = 4)
# For toy dataset, f_score_index_begin = 4 (because {0: '<s>', 1: '<e>', 2: '<p>', 3: '<u>', ...})
# For CCG dataset, f_score_index_begin = 2 (because {0: _PAD, 1: _SOS, ...})
f_score_index_begin = 2
# RL reward coefficient
reward_coef_fscore = 1
reward_coef_beam_size = 0.02
load_map_location = "cpu"
logfile = open(os.path.join(args.logdir, "eval_test.txt"), "w+")
for epoch in range(0, args.n_epochs):
print("Eval for epoch {}".format(epoch))
load_model_filename = os.path.join(args.logdir, "ckpt_" + str(epoch) + ".pth")
checkpoint = torch.load(load_model_filename, map_location=load_map_location)
shared_model.load_state_dict(checkpoint["state_dict"])
print("\tEval now...")
fscore, total_beam_number_in_dataset, avg_beam_size, time_used = \
eval_adaptive(
machine,
max_beam_size,
shared_model,
test_X, test_Y, index2word, index2label,
"test", args.name, "adaptive", initial_beam_size,
reward_coef_fscore, reward_coef_beam_size,
f_score_index_begin,
args)
log_msg = "%d\t%f\t%d\t%f\t%f" % (epoch, fscore, total_beam_number_in_dataset, avg_beam_size, time_used)
print(log_msg)
logfile.write(log_msg + '\n')
logfile.flush()
logfile.close()
def test_adaptive(
rank,
machine,
max_beam_size,
lr,
shared_model,
counter,
eval_data_X,
eval_data_Y,
index2word,
index2label,
suffix,
result_path,
decode_method,
beam_size,
reward_coef_fscore,
reward_coef_beam_size,
f_score_index_begin,
args,
):
torch.manual_seed(123 + rank)
# create adative model
model = AdaptiveActorCritic(max_beam_size=max_beam_size, action_space=3)
model.eval()
batch_num = len(eval_data_X)
instance_num = 0
beam_size_seqs = []
for batch in eval_data_X:
instance_num += len(batch)
for epoch in range(1, args.n_epochs + 1):
print("Epoch: {} of {} (rank{})".format(epoch, args.name, rank))
desc = result_path + '_process_' + args.name + '_' + str(epoch) + '_'
if result_path:
f_sen = open(
os.path.join(args.logdir, desc + "sen_" + suffix + ".txt"),
'w')
f_pred = open(
os.path.join(args.logdir, desc + "pred_" + suffix + ".txt"),
'w')
f_label = open(
os.path.join(args.logdir, desc + "label_" + suffix + ".txt"),
'w')
f_result_processed = \
open(os.path.join(args.logdir,
desc + "result_processed_" + suffix + ".txt"), 'w')
f_beam_size = \
open(os.path.join(args.logdir,
desc + 'beam_size_' + suffix + ".txt"), 'w')
# for calculating F-SCORE
true_pos_count = 0
pred_pos_count = 0
true_pred_pos_count = 0
for batch_idx in range(batch_num):
if (batch_idx + 1) % 200 == 0:
print("Batch {}/{}".format(batch_idx + 1, batch_num))
sen = eval_data_X[batch_idx]
label = eval_data_Y[batch_idx]
current_batch_size = len(sen)
current_sen_len = len(sen[0])
# DEBUG
# print(batch_idx, current_sen_len)
if current_sen_len < 3:
continue
sen_var = Variable(torch.LongTensor(sen))
label_var = Variable(torch.LongTensor(label))
if machine.gpu:
sen_var = sen_var.cuda()
label_var = label_var.cuda()
# Initialize the hidden and cell states
# The axes semantics are
# (num_layers * num_directions, batch_size, hidden_size)
# So 1 for single-directional LSTM encoder,
# 2 for bi-directional LSTM encoder.
init_enc_hidden = Variable(
torch.zeros((2, current_batch_size, machine.hidden_dim)))
init_enc_cell = Variable(
torch.zeros((2, current_batch_size, machine.hidden_dim)))
if machine.gpu:
init_enc_hidden = init_enc_hidden.cuda()
init_enc_cell = init_enc_cell.cuda()
enc_hidden_seq, (enc_hidden_out, enc_cell_out) = machine.encode(
sen_var, init_enc_hidden, init_enc_cell)
# The semantics of enc_hidden_out is (num_layers * num_directions,
# batch, hidden_size), and it is "tensor containing the hidden state
# for t = seq_len".
#
# Here we use a linear layer to transform the two-directions of the dec_hidden_out's into a single hidden_dim vector, to use as the input of the decoder
init_dec_hidden = machine.enc2dec_hidden(
torch.cat([enc_hidden_out[0], enc_hidden_out[1]], dim=1))
init_dec_cell = machine.enc2dec_cell(
torch.cat([enc_cell_out[0], enc_cell_out[1]], dim=1))
# ===================================
if decode_method == "adaptive":
# the input argument "beam_size" serves as initial_beam_size here
# TODO: implement this here
label_pred_seq, accum_logP_pred_seq, logP_pred_seq, \
attention_pred_seq, episode, sen_beam_size_seq= \
decode_one_sentence_adaptive_rl(machine,
current_sen_len, init_dec_hidden, init_dec_cell, enc_hidden_seq,
beam_size, max_beam_size, model, shared_model, reward_coef_fscore,
reward_coef_beam_size, label_var, f_score_index_begin, counter,
args)
else:
raise Exception("Not implemented!")
# ===================================
# update beam seq
beam_size_seqs += sen_beam_size_seq
### Debugging...
# print("input sentence =", sen)
# print("true label =", label)
# print("predicted label =", label_pred_seq)
# print("episode =", episode)
for label_index in range(f_score_index_begin, machine.label_size):
true_pos = (label_var == label_index)
true_pos_count += true_pos.float().sum()
pred_pos = (label_pred_seq == label_index)
pred_pos_count += pred_pos.float().sum()
true_pred_pos = true_pos & pred_pos
true_pred_pos_count += true_pred_pos.float().sum()
# Write result into file
if result_path:
if machine.gpu:
label_pred_seq = label_pred_seq.cpu()
label_pred_seq = label_pred_seq.data.numpy().tolist()
# Here label_pred_seq.shape = (batch size, sen len)
# sen, label, label_pred_seq are list of lists,
# thus I would like to flatten them for iterating easier
sen = list(itertools.chain.from_iterable(sen))
label = list(itertools.chain.from_iterable(label))
label_pred_seq = list(
itertools.chain.from_iterable(label_pred_seq))
assert len(sen) == len(label) and len(label) == len(
label_pred_seq)
for i in range(len(sen)):
f_sen.write(str(sen[i]) + '\n')
f_label.write(str(label[i]) + '\n')
f_pred.write(str(label_pred_seq[i]) + '\n')
# clean version (does not print <PAD>, print a newline instead of <EOS>)
# if sen[i] != 0 and sen[i] != 2: # not <PAD> and not <EOS>
# if sen[i] != 0: # not <PAD>
result_sen = index2word[sen[i]]
result_label = index2label[label[i]]
result_pred = index2label[label_pred_seq[i]]
f_result_processed.write(
"%s %s %s\n" % (result_sen, result_label, result_pred))
f_sen.flush()
f_label.flush()
f_pred.flush()
f_result_processed.flush()
if decode_method == "adaptive":
beam_size_seq_str = ' '.join(map(str, sen_beam_size_seq))
f_beam_size.write(beam_size_seq_str + '\n')
f_beam_size.flush()
# End for batch_idx
if machine.gpu:
true_pos_count = true_pos_count.cpu()
pred_pos_count = pred_pos_count.cpu()
true_pred_pos_count = true_pred_pos_count.cpu()
true_pos_count = true_pos_count.data.numpy()[0]
pred_pos_count = pred_pos_count.data.numpy()[0]
true_pred_pos_count = true_pred_pos_count.data.numpy()[0]
precision = true_pred_pos_count / pred_pos_count if pred_pos_count > 0 else 0
recall = true_pred_pos_count / true_pos_count if true_pos_count > 0 else 0
fscore = 2 / (1 / precision + 1 / recall) if (precision > 0
and recall > 0) else 0
fscore = fscore * 100
if result_path:
f_sen.close()
f_pred.close()
f_label.close()
f_result_processed.close()
f_beam_size.close()
avg_beam_sizes = sum(beam_size_seqs) / float(len(beam_size_seqs))
print("Epoch {}: Avg {} beam size: {} (rank{})".format(
epoch, args.name, avg_beam_sizes, rank))
print("Epoch {}: Avg {} Fscore = {} (rank{})".format(
epoch, args.name, fscore, rank))