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SAPar_main.py
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SAPar_main.py
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import argparse
import itertools
import os.path
import os
import time
import logging
import datetime
import torch
import torch.optim.lr_scheduler
import numpy as np
import os
import evaluate
import trees
import vocabulary
import nkutil
from tqdm import tqdm
import SAPar_model
import random
tokens = SAPar_model
from attutil import FindNgrams
def torch_load(load_path):
if SAPar_model.use_cuda:
return torch.load(load_path)
else:
return torch.load(load_path, map_location=lambda storage, location: storage)
def format_elapsed(start_time):
elapsed_time = int(time.time() - start_time)
minutes, seconds = divmod(elapsed_time, 60)
hours, minutes = divmod(minutes, 60)
days, hours = divmod(hours, 24)
elapsed_string = "{}h{:02}m{:02}s".format(hours, minutes, seconds)
if days > 0:
elapsed_string = "{}d{}".format(days, elapsed_string)
return elapsed_string
def make_hparams():
return nkutil.HParams(
max_len_train=0, # no length limit
max_len_dev=0, # no length limit
sentence_max_len=300,
learning_rate=0.0008,
learning_rate_warmup_steps=160,
clip_grad_norm=0., #no clipping
step_decay=True, # note that disabling step decay is not implemented
step_decay_factor=0.5,
step_decay_patience=5,
max_consecutive_decays=3, # establishes a termination criterion
partitioned=True,
num_layers_position_only=0,
num_layers=8,
d_model=1024,
num_heads=8,
d_kv=64,
d_ff=2048,
d_label_hidden=250,
d_tag_hidden=250,
tag_loss_scale=5.0,
attention_dropout=0.2,
embedding_dropout=0.0,
relu_dropout=0.1,
residual_dropout=0.2,
use_tags=False,
use_words=False,
use_chars_lstm=False,
use_elmo=False,
use_bert=False,
use_zen=False,
use_bert_only=False,
use_xlnet=False,
use_xlnet_only=False,
predict_tags=False,
d_char_emb=32, # A larger value may be better for use_chars_lstm
tag_emb_dropout=0.2,
word_emb_dropout=0.4,
morpho_emb_dropout=0.2,
timing_dropout=0.0,
char_lstm_input_dropout=0.2,
elmo_dropout=0.5, # Note that this semi-stacks with morpho_emb_dropout!
bert_model="bert-base-uncased",
bert_do_lower_case=True,
bert_transliterate="",
xlnet_model="xlnet-large-cased",
xlnet_do_lower_case=False,
zen_model='',
ngram=5,
ngram_threshold=0,
ngram_freq_threshold=1,
ngram_type='pmi',
)
def run_train(args, hparams):
# if args.numpy_seed is not None:
# print("Setting numpy random seed to {}...".format(args.numpy_seed))
# np.random.seed(args.numpy_seed)
#
# # Make sure that pytorch is actually being initialized randomly.
# # On my cluster I was getting highly correlated results from multiple
# # runs, but calling reset_parameters() changed that. A brief look at the
# # pytorch source code revealed that pytorch initializes its RNG by
# # calling std::random_device, which according to the C++ spec is allowed
# # to be deterministic.
# seed_from_numpy = np.random.randint(2147483648)
# print("Manual seed for pytorch:", seed_from_numpy)
# torch.manual_seed(seed_from_numpy)
now_time = datetime.datetime.now().strftime('%Y-%m-%d-%H-%M-%S')
log_file_name = os.path.join(args.log_dir, 'log-' + now_time)
logging.basicConfig(format='%(asctime)s - %(levelname)s - %(name)s - %(message)s',
datefmt='%m/%d/%Y %H:%M:%S',
filename=log_file_name,
filemode='w',
level=logging.INFO)
logger = logging.getLogger(__name__)
console_handler = logging.StreamHandler()
logger.addHandler(console_handler)
logger = logging.getLogger(__name__)
random.seed(args.seed)
np.random.seed(args.seed)
torch.manual_seed(args.seed)
hparams.set_from_args(args)
logger.info("Hyperparameters:")
logger.info(hparams.print())
logger.info("Loading training trees from {}...".format(args.train_path))
if hparams.predict_tags and args.train_path.endswith('10way.clean'):
logger.info("WARNING: The data distributed with this repository contains "
"predicted part-of-speech tags only (not gold tags!) We do not "
"recommend enabling predict_tags in this configuration.")
train_treebank = trees.load_trees(args.train_path)
if hparams.max_len_train > 0:
train_treebank = [tree for tree in train_treebank if len(list(tree.leaves())) <= hparams.max_len_train]
logger.info("Loaded {:,} training examples.".format(len(train_treebank)))
logger.info("Loading development trees from {}...".format(args.dev_path))
dev_treebank = trees.load_trees(args.dev_path)
if hparams.max_len_dev > 0:
dev_treebank = [tree for tree in dev_treebank if len(list(tree.leaves())) <= hparams.max_len_dev]
logger.info("Loaded {:,} development examples.".format(len(dev_treebank)))
logger.info("Loading test trees from {}...".format(args.test_path))
test_treebank = trees.load_trees(args.test_path)
if hparams.max_len_dev > 0:
test_treebank = [tree for tree in test_treebank if len(list(tree.leaves())) <= hparams.max_len_dev]
logger.info("Loaded {:,} test examples.".format(len(test_treebank)))
logger.info("Processing trees for training...")
train_parse = [tree.convert() for tree in train_treebank]
dev_parse = [tree.convert() for tree in dev_treebank]
test_parse = [tree.convert() for tree in test_treebank]
logger.info("Constructing vocabularies...")
tag_vocab = vocabulary.Vocabulary()
tag_vocab.index(tokens.START)
tag_vocab.index(tokens.STOP)
tag_vocab.index(tokens.TAG_UNK)
word_vocab = vocabulary.Vocabulary()
word_vocab.index(tokens.START)
word_vocab.index(tokens.STOP)
word_vocab.index(tokens.UNK)
label_vocab = vocabulary.Vocabulary()
label_vocab.index(())
char_set = set()
for tree in train_parse:
nodes = [tree]
while nodes:
node = nodes.pop()
if isinstance(node, trees.InternalParseNode):
label_vocab.index(node.label)
nodes.extend(reversed(node.children))
else:
tag_vocab.index(node.tag)
word_vocab.index(node.word)
char_set |= set(node.word)
char_vocab = vocabulary.Vocabulary()
# If codepoints are small (e.g. Latin alphabet), index by codepoint directly
highest_codepoint = max(ord(char) for char in char_set)
if highest_codepoint < 512:
if highest_codepoint < 256:
highest_codepoint = 256
else:
highest_codepoint = 512
# This also takes care of constants like tokens.CHAR_PAD
for codepoint in range(highest_codepoint):
char_index = char_vocab.index(chr(codepoint))
assert char_index == codepoint
else:
char_vocab.index(tokens.CHAR_UNK)
char_vocab.index(tokens.CHAR_START_SENTENCE)
char_vocab.index(tokens.CHAR_START_WORD)
char_vocab.index(tokens.CHAR_STOP_WORD)
char_vocab.index(tokens.CHAR_STOP_SENTENCE)
for char in sorted(char_set):
char_vocab.index(char)
tag_vocab.freeze()
word_vocab.freeze()
label_vocab.freeze()
char_vocab.freeze()
# -------- ngram vocab ------------
ngram_vocab = vocabulary.Vocabulary()
ngram_vocab.index(())
ngram_finder = FindNgrams(min_count=hparams.ngram_threshold)
def get_sentence(parse):
sentences = []
for tree in parse:
sentence = []
for leaf in tree.leaves():
sentence.append(leaf.word)
sentences.append(sentence)
return sentences
sentence_list = get_sentence(train_parse)
if not args.cross_domain:
sentence_list.extend(get_sentence(dev_parse))
# sentence_list.extend(get_sentence(test_parse))
if hparams.ngram_type == 'freq':
logger.info('ngram type: freq')
ngram_finder.count_ngram(sentence_list, hparams.ngram)
elif hparams.ngram_type == 'pmi':
logger.info('ngram type: pmi')
ngram_finder.find_ngrams_pmi(sentence_list, hparams.ngram, hparams.ngram_freq_threshold)
else:
raise ValueError()
ngram_type_count = [0 for _ in range(hparams.ngram)]
for w, c in ngram_finder.ngrams.items():
ngram_type_count[len(list(w))-1] += 1
for _ in range(c):
ngram_vocab.index(w)
logger.info(str(ngram_type_count))
ngram_vocab.freeze()
ngram_count = [0 for _ in range(hparams.ngram)]
for sentence in sentence_list:
for n in range(len(ngram_count)):
length = n + 1
for i in range(len(sentence)):
gram = tuple(sentence[i: i + length])
if gram in ngram_finder.ngrams:
ngram_count[n] += 1
logger.info(str(ngram_count))
# -------- ngram vocab ------------
def print_vocabulary(name, vocab):
special = {tokens.START, tokens.STOP, tokens.UNK}
logger.info("{} ({:,}): {}".format(
name, vocab.size,
sorted(value for value in vocab.values if value in special) +
sorted(value for value in vocab.values if value not in special)))
if args.print_vocabs:
print_vocabulary("Tag", tag_vocab)
print_vocabulary("Word", word_vocab)
print_vocabulary("Label", label_vocab)
print_vocabulary("Ngram", ngram_vocab)
logger.info("Initializing model...")
load_path = None
if load_path is not None:
logger.info(f"Loading parameters from {load_path}")
info = torch_load(load_path)
parser = SAPar_model.SAChartParser.from_spec(info['spec'], info['state_dict'])
else:
parser = SAPar_model.SAChartParser(
tag_vocab,
word_vocab,
label_vocab,
char_vocab,
ngram_vocab,
hparams,
)
print("Initializing optimizer...")
trainable_parameters = [param for param in parser.parameters() if param.requires_grad]
trainer = torch.optim.Adam(trainable_parameters, lr=1., betas=(0.9, 0.98), eps=1e-9)
if load_path is not None:
trainer.load_state_dict(info['trainer'])
pytorch_total_params = sum(p.numel() for p in parser.parameters() if p.requires_grad)
logger.info('# of trainable parameters: %d' % pytorch_total_params)
def set_lr(new_lr):
for param_group in trainer.param_groups:
param_group['lr'] = new_lr
assert hparams.step_decay, "Only step_decay schedule is supported"
warmup_coeff = hparams.learning_rate / hparams.learning_rate_warmup_steps
scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(
trainer, 'max',
factor=hparams.step_decay_factor,
patience=hparams.step_decay_patience,
verbose=True,
)
def schedule_lr(iteration):
iteration = iteration + 1
if iteration <= hparams.learning_rate_warmup_steps:
set_lr(iteration * warmup_coeff)
clippable_parameters = trainable_parameters
grad_clip_threshold = np.inf if hparams.clip_grad_norm == 0 else hparams.clip_grad_norm
logger.info("Training...")
total_processed = 0
current_processed = 0
check_every = len(train_parse) / args.checks_per_epoch
best_eval_fscore = -np.inf
test_fscore_on_dev = -np.inf
best_eval_scores = None
best_eval_model_path = None
best_eval_processed = 0
start_time = time.time()
def check_eval(eval_treebank, ep, flag='dev'):
# nonlocal best_eval_fscore
# nonlocal best_eval_model_path
# nonlocal best_eval_processed
dev_start_time = time.time()
eval_predicted = []
for dev_start_index in range(0, len(eval_treebank), args.eval_batch_size):
subbatch_trees = eval_treebank[dev_start_index:dev_start_index + args.eval_batch_size]
subbatch_sentences = [[(leaf.tag, leaf.word) for leaf in tree.leaves()] for tree in subbatch_trees]
predicted, _ = parser.parse_batch(subbatch_sentences)
del _
eval_predicted.extend([p.convert() for p in predicted])
eval_fscore = evaluate.evalb(args.evalb_dir, eval_treebank, eval_predicted)
logger.info(
flag + ' eval '
'epoch {} '
"fscore {} "
"elapsed {} "
"total-elapsed {}".format(
ep,
eval_fscore,
format_elapsed(dev_start_time),
format_elapsed(start_time),
)
)
return eval_fscore
def save_model(eval_fscore, remove_model):
nonlocal best_eval_fscore
nonlocal best_eval_model_path
nonlocal best_eval_processed
nonlocal best_eval_scores
if best_eval_model_path is not None:
extensions = [".pt"]
for ext in extensions:
path = best_eval_model_path + ext
if os.path.exists(path) and remove_model:
logger.info("Removing previous model file {}...".format(path))
os.remove(path)
best_eval_fscore = eval_fscore.fscore
best_eval_scores = eval_fscore
best_eval_model_path = "{}_eval={:.2f}_{}".format(
args.model_path_base, eval_fscore.fscore, now_time)
best_eval_processed = total_processed
logger.info("Saving new best model to {}...".format(best_eval_model_path))
torch.save({
'spec': parser.spec,
'state_dict': parser.state_dict(),
# 'trainer' : trainer.state_dict(),
}, best_eval_model_path + ".pt")
for epoch in itertools.count(start=1):
if args.epochs is not None and epoch > args.epochs:
break
np.random.shuffle(train_parse)
epoch_start_time = time.time()
for start_index in range(0, len(train_parse), args.batch_size):
trainer.zero_grad()
schedule_lr(total_processed // args.batch_size)
batch_loss_value = 0.0
batch_trees = train_parse[start_index:start_index + args.batch_size]
batch_sentences = [[(leaf.tag, leaf.word) for leaf in tree.leaves()] for tree in batch_trees]
batch_num_tokens = sum(len(sentence) for sentence in batch_sentences)
for subbatch_sentences, subbatch_trees in parser.split_batch(batch_sentences, batch_trees,
args.subbatch_max_tokens):
_, loss = parser.parse_batch(subbatch_sentences, subbatch_trees)
if hparams.predict_tags:
loss = loss[0] / len(batch_trees) + loss[1] / batch_num_tokens
else:
loss = loss / len(batch_trees)
loss_value = float(loss.data.cpu().numpy())
batch_loss_value += loss_value
if loss_value > 0:
loss.backward()
del loss
total_processed += len(subbatch_trees)
current_processed += len(subbatch_trees)
grad_norm = torch.nn.utils.clip_grad_norm_(clippable_parameters, grad_clip_threshold)
trainer.step()
print(
"epoch {:,} "
"batch {:,}/{:,} "
"processed {:,} "
"batch-loss {:.4f} "
"grad-norm {:.4f} "
"epoch-elapsed {} "
"total-elapsed {}".format(
epoch,
start_index // args.batch_size + 1,
int(np.ceil(len(train_parse) / args.batch_size)),
total_processed,
batch_loss_value,
grad_norm,
format_elapsed(epoch_start_time),
format_elapsed(start_time),
)
)
if current_processed >= check_every:
current_processed -= check_every
dev_fscore = check_eval(dev_treebank, epoch, flag='dev')
test_fscore = check_eval(test_treebank, epoch, flag='test')
if dev_fscore.fscore > best_eval_fscore:
save_model(dev_fscore, remove_model=True)
test_fscore_on_dev = test_fscore
# adjust learning rate at the end of an epoch
if (total_processed // args.batch_size + 1) > hparams.learning_rate_warmup_steps:
scheduler.step(best_eval_fscore)
if (total_processed - best_eval_processed) > args.patients \
+ ((hparams.step_decay_patience + 1) * hparams.max_consecutive_decays * len(train_parse)):
logger.info("Terminating due to lack of improvement in eval fscore.")
logger.info(
"best dev {} test {}".format(
best_eval_scores,
test_fscore_on_dev,
)
)
break
def run_test(args):
print("Loading test trees from {}...".format(args.test_path))
test_treebank = trees.load_trees(args.test_path)
print("Loaded {:,} test examples.".format(len(test_treebank)))
print("Loading model from {}...".format(args.model_path_base))
assert args.model_path_base.endswith(".pt"), "Only pytorch savefiles supported"
info = torch_load(args.model_path_base)
assert 'hparams' in info['spec'], "Older savefiles not supported"
parser = SAPar_model.SAChartParser.from_spec(info['spec'], info['state_dict'])
print("Parsing test sentences...")
start_time = time.time()
test_predicted = []
for start_index in tqdm(range(0, len(test_treebank), args.eval_batch_size)):
subbatch_trees = test_treebank[start_index:start_index+args.eval_batch_size]
subbatch_sentences = [[(leaf.tag, leaf.word) for leaf in tree.leaves()] for tree in subbatch_trees]
predicted, _ = parser.parse_batch(subbatch_sentences)
del _
test_predicted.extend([p.convert() for p in predicted])
# The tree loader does some preprocessing to the trees (e.g. stripping TOP
# symbols or SPMRL morphological features). We compare with the input file
# directly to be extra careful about not corrupting the evaluation. We also
# allow specifying a separate "raw" file for the gold trees: the inputs to
# our parser have traces removed and may have predicted tags substituted,
# and we may wish to compare against the raw gold trees to make sure we
# haven't made a mistake. As far as we can tell all of these variations give
# equivalent results.
ref_gold_path = args.test_path
if args.test_path_raw is not None:
print("Comparing with raw trees from", args.test_path_raw)
ref_gold_path = args.test_path_raw
test_fscore = evaluate.evalb(args.evalb_dir, test_treebank, test_predicted, ref_gold_path=ref_gold_path)
model_name = args.model_path_base[args.model_path_base.rfind('/')+1: args.model_path_base.rfind('.')]
output_file = './results/' + model_name + '.txt'
with open(output_file, "w") as outfile:
for tree in test_predicted:
outfile.write("{}\n".format(tree.linearize()))
print(
"test-fscore {} "
"test-elapsed {}".format(
test_fscore,
format_elapsed(start_time),
)
)
def run_parse(args):
if args.output_path != '-' and os.path.exists(args.output_path):
print("Error: output file already exists:", args.output_path)
return
print("Loading model from {}...".format(args.model_path_base))
assert args.model_path_base.endswith(".pt"), "Only pytorch savefiles supported"
info = torch_load(args.model_path_base)
assert 'hparams' in info['spec'], "Older savefiles not supported"
parser = SAPar_model.SAChartParser.from_spec(info['spec'], info['state_dict'])
print("Parsing sentences...")
with open(args.input_path) as input_file:
sentences = input_file.readlines()
sentences = [sentence.split() for sentence in sentences]
# Tags are not available when parsing from raw text, so use a dummy tag
if 'UNK' in parser.tag_vocab.indices:
dummy_tag = 'UNK'
else:
dummy_tag = parser.tag_vocab.value(0)
start_time = time.time()
all_predicted = []
for start_index in range(0, len(sentences), args.eval_batch_size):
subbatch_sentences = sentences[start_index:start_index+args.eval_batch_size]
subbatch_sentences = [[(dummy_tag, word) for word in sentence] for sentence in subbatch_sentences]
predicted, _ = parser.parse_batch(subbatch_sentences)
del _
if args.output_path == '-':
for p in predicted:
print(p.convert().linearize())
else:
all_predicted.extend([p.convert() for p in predicted])
if args.output_path != '-':
with open(args.output_path, 'w') as output_file:
for tree in all_predicted:
output_file.write("{}\n".format(tree.linearize()))
print("Output written to:", args.output_path)
def main():
parser = argparse.ArgumentParser()
subparsers = parser.add_subparsers()
hparams = make_hparams()
subparser = subparsers.add_parser("train")
subparser.set_defaults(callback=lambda args: run_train(args, hparams))
hparams.populate_arguments(subparser)
subparser.add_argument("--seed", default=2020, type=int)
subparser.add_argument("--model-path-base", required=True)
subparser.add_argument("--evalb-dir", default="./EVALB/")
subparser.add_argument("--train-path", default="./data/PTB/train.mrg")
subparser.add_argument("--dev-path", default="./data/PTB/dev.mrg")
subparser.add_argument("--test-path", default="./data/PTB/test.mrg")
subparser.add_argument("--log_dir", default="./logs/")
subparser.add_argument("--batch-size", type=int, default=250)
subparser.add_argument("--subbatch-max-tokens", type=int, default=2000)
subparser.add_argument("--eval-batch-size", type=int, default=100)
subparser.add_argument("--epochs", type=int)
subparser.add_argument("--checks-per-epoch", type=int, default=4)
subparser.add_argument("--patients", type=int, default=0)
subparser.add_argument("--print-vocabs", action="store_true")
subparser.add_argument("--stop-f", type=float, default=None)
subparser.add_argument("--track-f", type=float, default=None)
subparser.add_argument("--cross-domain", action='store_true')
subparser = subparsers.add_parser("test")
subparser.set_defaults(callback=run_test)
subparser.add_argument("--model-path-base", required=True)
subparser.add_argument("--evalb-dir", default="./EVALB/")
subparser.add_argument("--test-path", default="./data/PTB/test.mrg")
subparser.add_argument("--test-path-raw", type=str)
subparser.add_argument("--eval-batch-size", type=int, default=100)
subparser = subparsers.add_parser("parse")
subparser.set_defaults(callback=run_parse)
subparser.add_argument("--model-path-base", required=True)
subparser.add_argument("--input-path", type=str, required=True)
subparser.add_argument("--output-path", type=str, default="-")
subparser.add_argument("--eval-batch-size", type=int, default=100)
args = parser.parse_args()
args.callback(args)
# %%
if __name__ == "__main__":
main()