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606 lines
25 KiB
606 lines
25 KiB
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Contains U2 model."""
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import json
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import os
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import time
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from collections import defaultdict
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from collections import OrderedDict
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from contextlib import nullcontext
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from typing import Optional
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import jsonlines
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import numpy as np
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import paddle
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from paddle import distributed as dist
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from yacs.config import CfgNode
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from paddlespeech.s2t.frontend.featurizer import TextFeaturizer
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from paddlespeech.s2t.io.dataloader import BatchDataLoader
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from paddlespeech.s2t.models.u2_st import U2STModel
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from paddlespeech.s2t.training.optimizer import OptimizerFactory
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from paddlespeech.s2t.training.reporter import ObsScope
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from paddlespeech.s2t.training.reporter import report
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from paddlespeech.s2t.training.scheduler import LRSchedulerFactory
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from paddlespeech.s2t.training.timer import Timer
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from paddlespeech.s2t.training.trainer import Trainer
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from paddlespeech.s2t.utils import bleu_score
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from paddlespeech.s2t.utils import layer_tools
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from paddlespeech.s2t.utils import mp_tools
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from paddlespeech.s2t.utils.log import Log
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from paddlespeech.s2t.utils.utility import UpdateConfig
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logger = Log(__name__).getlog()
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class U2STTrainer(Trainer):
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@classmethod
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def params(cls, config: Optional[CfgNode]=None) -> CfgNode:
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# training config
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default = CfgNode(
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dict(
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n_epoch=50, # train epochs
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log_interval=100, # steps
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accum_grad=1, # accum grad by # steps
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global_grad_clip=5.0, # the global norm clip
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))
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default.optim = 'adam'
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default.optim_conf = CfgNode(
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dict(
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lr=5e-4, # learning rate
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weight_decay=1e-6, # the coeff of weight decay
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))
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default.scheduler = 'warmuplr'
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default.scheduler_conf = CfgNode(
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dict(
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warmup_steps=25000,
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lr_decay=1.0, # learning rate decay
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))
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if config is not None:
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config.merge_from_other_cfg(default)
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return default
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def __init__(self, config, args):
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super().__init__(config, args)
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def train_batch(self, batch_index, batch_data, msg):
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train_conf = self.config
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start = time.time()
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# forward
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utt, audio, audio_len, text, text_len = batch_data
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if isinstance(text, list) and isinstance(text_len, list):
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# joint training with ASR. Two decoding texts [translation, transcription]
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text, text_transcript = text
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text_len, text_transcript_len = text_len
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loss, st_loss, attention_loss, ctc_loss = self.model(
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audio, audio_len, text, text_len, text_transcript,
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text_transcript_len)
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else:
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loss, st_loss, attention_loss, ctc_loss = self.model(
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audio, audio_len, text, text_len)
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# loss div by `batch_size * accum_grad`
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loss /= train_conf.accum_grad
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losses_np = {'loss': float(loss) * train_conf.accum_grad}
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if st_loss:
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losses_np['st_loss'] = float(st_loss)
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if attention_loss:
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losses_np['att_loss'] = float(attention_loss)
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if ctc_loss:
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losses_np['ctc_loss'] = float(ctc_loss)
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# loss backward
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if (batch_index + 1) % train_conf.accum_grad != 0:
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# Disable gradient synchronizations across DDP processes.
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# Within this context, gradients will be accumulated on module
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# variables, which will later be synchronized.
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context = self.model.no_sync if (hasattr(self.model, "no_sync") and
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self.parallel) else nullcontext
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else:
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# Used for single gpu training and DDP gradient synchronization
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# processes.
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context = nullcontext
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with context():
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loss.backward()
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layer_tools.print_grads(self.model, print_func=None)
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# optimizer step
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if (batch_index + 1) % train_conf.accum_grad == 0:
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self.optimizer.step()
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self.optimizer.clear_grad()
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self.lr_scheduler.step()
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self.iteration += 1
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iteration_time = time.time() - start
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for k, v in losses_np.items():
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report(k, v)
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report("batch_size", self.config.collator.batch_size)
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report("accum", train_conf.accum_grad)
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report("step_cost", iteration_time)
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if (batch_index + 1) % train_conf.log_interval == 0:
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msg += "train time: {:>.3f}s, ".format(iteration_time)
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msg += "batch size: {}, ".format(self.config.batch_size)
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msg += "accum: {}, ".format(train_conf.accum_grad)
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msg += ', '.join('{}: {:>.6f}'.format(k, v)
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for k, v in losses_np.items())
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logger.info(msg)
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if dist.get_rank() == 0 and self.visualizer:
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losses_np_v = losses_np.copy()
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losses_np_v.update({"lr": self.lr_scheduler()})
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for key, val in losses_np_v.items():
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self.visualizer.add_scalar(
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tag="train/" + key, value=val, step=self.iteration - 1)
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@paddle.no_grad()
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def valid(self):
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self.model.eval()
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logger.info(f"Valid Total Examples: {len(self.valid_loader.dataset)}")
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valid_losses = defaultdict(list)
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num_seen_utts = 1
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total_loss = 0.0
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for i, batch in enumerate(self.valid_loader):
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utt, audio, audio_len, text, text_len = batch
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if isinstance(text, list) and isinstance(text_len, list):
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text, text_transcript = text
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text_len, text_transcript_len = text_len
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loss, st_loss, attention_loss, ctc_loss = self.model(
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audio, audio_len, text, text_len, text_transcript,
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text_transcript_len)
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else:
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loss, st_loss, attention_loss, ctc_loss = self.model(
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audio, audio_len, text, text_len)
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if paddle.isfinite(loss):
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num_utts = batch[1].shape[0]
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num_seen_utts += num_utts
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total_loss += float(st_loss) * num_utts
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valid_losses['val_loss'].append(float(st_loss))
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if attention_loss:
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valid_losses['val_att_loss'].append(float(attention_loss))
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if ctc_loss:
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valid_losses['val_ctc_loss'].append(float(ctc_loss))
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if (i + 1) % self.config.log_interval == 0:
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valid_dump = {k: np.mean(v) for k, v in valid_losses.items()}
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valid_dump['val_history_st_loss'] = total_loss / num_seen_utts
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# logging
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msg = f"Valid: Rank: {dist.get_rank()}, "
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msg += "epoch: {}, ".format(self.epoch)
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msg += "step: {}, ".format(self.iteration)
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msg += "batch: {}/{}, ".format(i + 1, len(self.valid_loader))
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msg += ', '.join('{}: {:>.6f}'.format(k, v)
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for k, v in valid_dump.items())
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logger.info(msg)
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logger.info('Rank {} Val info st_val_loss {}'.format(
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dist.get_rank(), total_loss / num_seen_utts))
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return total_loss, num_seen_utts
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def do_train(self):
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"""The training process control by step."""
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# !!!IMPORTANT!!!
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# Try to export the model by script, if fails, we should refine
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# the code to satisfy the script export requirements
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# script_model = paddle.jit.to_static(self.model)
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# script_model_path = str(self.checkpoint_dir / 'init')
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# paddle.jit.save(script_model, script_model_path)
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self.before_train()
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logger.info(f"Train Total Examples: {len(self.train_loader.dataset)}")
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while self.epoch < self.config.n_epoch:
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with Timer("Epoch-Train Time Cost: {}"):
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self.model.train()
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try:
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data_start_time = time.time()
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for batch_index, batch in enumerate(self.train_loader):
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dataload_time = time.time() - data_start_time
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msg = "Train:"
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observation = OrderedDict()
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with ObsScope(observation):
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report("Rank", dist.get_rank())
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report("epoch", self.epoch)
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report('step', self.iteration)
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report("lr", self.lr_scheduler())
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self.train_batch(batch_index, batch, msg)
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self.after_train_batch()
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report('iter', batch_index + 1)
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report('total', len(self.train_loader))
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report('reader_cost', dataload_time)
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observation['batch_cost'] = observation[
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'reader_cost'] + observation['step_cost']
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observation['samples'] = observation['batch_size']
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observation['ips,sent./sec'] = observation[
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'batch_size'] / observation['batch_cost']
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for k, v in observation.items():
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msg += f" {k.split(',')[0]}: "
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msg += f"{v:>.8f}" if isinstance(v,
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float) else f"{v}"
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msg += f" {k.split(',')[1]}" if len(
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k.split(',')) == 2 else ""
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msg += ","
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msg = msg[:-1] # remove the last ","
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if (batch_index + 1
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) % self.config.training.log_interval == 0:
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logger.info(msg)
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except Exception as e:
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logger.error(e)
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raise e
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with Timer("Eval Time Cost: {}"):
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total_loss, num_seen_utts = self.valid()
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if dist.get_world_size() > 1:
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num_seen_utts = paddle.to_tensor(num_seen_utts)
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# the default operator in all_reduce function is sum.
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dist.all_reduce(num_seen_utts)
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total_loss = paddle.to_tensor(total_loss)
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dist.all_reduce(total_loss)
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cv_loss = total_loss / num_seen_utts
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cv_loss = float(cv_loss)
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else:
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cv_loss = total_loss / num_seen_utts
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logger.info(
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'Epoch {} Val info val_loss {}'.format(self.epoch, cv_loss))
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if self.visualizer:
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self.visualizer.add_scalar(
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tag='eval/cv_loss', value=cv_loss, step=self.epoch)
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self.visualizer.add_scalar(
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tag='eval/lr', value=self.lr_scheduler(), step=self.epoch)
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self.save(tag=self.epoch, infos={'val_loss': cv_loss})
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self.new_epoch()
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def setup_dataloader(self):
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config = self.config.clone()
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load_transcript = True if config.model_conf.asr_weight > 0 else False
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if self.train:
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# train/valid dataset, return token ids
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self.train_loader = BatchDataLoader(
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json_file=config.train_manifest,
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train_mode=True,
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sortagrad=False,
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batch_size=config.batch_size,
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maxlen_in=config.maxlen_in,
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maxlen_out=config.maxlen_out,
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minibatches=0,
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mini_batch_size=1,
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batch_count='auto',
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batch_bins=0,
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batch_frames_in=0,
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batch_frames_out=0,
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batch_frames_inout=0,
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preprocess_conf=config.augmentation_config, # aug will be off when train_mode=False
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n_iter_processes=config.num_workers,
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subsampling_factor=1,
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load_aux_output=load_transcript,
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num_encs=1,
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dist_sampler=True)
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self.valid_loader = BatchDataLoader(
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json_file=config.dev_manifest,
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train_mode=False,
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sortagrad=False,
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batch_size=config.batch_size,
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maxlen_in=float('inf'),
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maxlen_out=float('inf'),
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minibatches=0,
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mini_batch_size=1,
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batch_count='auto',
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batch_bins=0,
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batch_frames_in=0,
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batch_frames_out=0,
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batch_frames_inout=0,
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preprocess_conf=config.augmentation_config, # aug will be off when train_mode=False
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n_iter_processes=config.num_workers,
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subsampling_factor=1,
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load_aux_output=load_transcript,
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num_encs=1,
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dist_sampler=True)
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logger.info("Setup train/valid Dataloader!")
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else:
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# test dataset, return raw text
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decode_batch_size = config.get('decode',dict()).get('decode_batch_size', 1)
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self.test_loader = BatchDataLoader(
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json_file=config.data.test_manifest,
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train_mode=False,
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sortagrad=False,
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batch_size=decode_batch_size,
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maxlen_in=float('inf'),
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maxlen_out=float('inf'),
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minibatches=0,
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mini_batch_size=1,
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batch_count='auto',
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batch_bins=0,
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batch_frames_in=0,
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batch_frames_out=0,
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batch_frames_inout=0,
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preprocess_conf=config.augmentation_config, # aug will be off when train_mode=False
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n_iter_processes=config.num_workers,
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subsampling_factor=1,
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num_encs=1,
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dist_sampler=False)
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logger.info("Setup test Dataloader!")
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def setup_model(self):
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config = self.config
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model_conf = config
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with UpdateConfig(model_conf):
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if self.train:
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model_conf.input_dim = self.train_loader.feat_dim
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model_conf.output_dim = self.train_loader.vocab_size
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else:
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model_conf.input_dim = self.test_loader.feat_dim
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model_conf.output_dim = self.test_loader.vocab_size
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model = U2STModel.from_config(model_conf)
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if self.parallel:
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model = paddle.DataParallel(model)
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logger.info(f"{model}")
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layer_tools.print_params(model, logger.info)
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train_config = config
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optim_type = train_config.optim
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optim_conf = train_config.optim_conf
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scheduler_type = train_config.scheduler
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scheduler_conf = train_config.scheduler_conf
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scheduler_args = {
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"learning_rate": optim_conf.lr,
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"verbose": False,
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"warmup_steps": scheduler_conf.warmup_steps,
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"gamma": scheduler_conf.lr_decay,
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"d_model": model_conf.encoder_conf.output_size,
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}
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lr_scheduler = LRSchedulerFactory.from_args(scheduler_type,
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scheduler_args)
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def optimizer_args(
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config,
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parameters,
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lr_scheduler=None, ):
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train_config = config.training
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optim_type = train_config.optim
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optim_conf = train_config.optim_conf
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scheduler_type = train_config.scheduler
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scheduler_conf = train_config.scheduler_conf
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return {
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"grad_clip": train_config.global_grad_clip,
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"weight_decay": optim_conf.weight_decay,
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"learning_rate": lr_scheduler
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if lr_scheduler else optim_conf.lr,
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"parameters": parameters,
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"epsilon": 1e-9 if optim_type == 'noam' else None,
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"beta1": 0.9 if optim_type == 'noam' else None,
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"beat2": 0.98 if optim_type == 'noam' else None,
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}
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optimzer_args = optimizer_args(config, model.parameters(), lr_scheduler)
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optimizer = OptimizerFactory.from_args(optim_type, optimzer_args)
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self.model = model
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self.optimizer = optimizer
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self.lr_scheduler = lr_scheduler
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logger.info("Setup model/optimizer/lr_scheduler!")
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class U2STTester(U2STTrainer):
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@classmethod
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def params(cls, config: Optional[CfgNode]=None) -> CfgNode:
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# decoding config
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default = CfgNode(
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dict(
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alpha=2.5, # Coef of LM for beam search.
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beta=0.3, # Coef of WC for beam search.
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cutoff_prob=1.0, # Cutoff probability for pruning.
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cutoff_top_n=40, # Cutoff number for pruning.
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lang_model_path='models/lm/common_crawl_00.prune01111.trie.klm', # Filepath for language model.
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decoding_method='attention', # Decoding method. Options: 'attention', 'ctc_greedy_search',
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# 'ctc_prefix_beam_search', 'attention_rescoring'
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error_rate_type='bleu', # Error rate type for evaluation. Options `bleu`, 'char_bleu'
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num_proc_bsearch=8, # # of CPUs for beam search.
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beam_size=10, # Beam search width.
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batch_size=16, # decoding batch size
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ctc_weight=0.0, # ctc weight for attention rescoring decode mode.
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decoding_chunk_size=-1, # decoding chunk size. Defaults to -1.
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# <0: for decoding, use full chunk.
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# >0: for decoding, use fixed chunk size as set.
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# 0: used for training, it's prohibited here.
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num_decoding_left_chunks=-1, # number of left chunks for decoding. Defaults to -1.
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simulate_streaming=False, # simulate streaming inference. Defaults to False.
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))
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if config is not None:
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config.merge_from_other_cfg(default)
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return default
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def __init__(self, config, args):
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super().__init__(config, args)
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self.text_feature = TextFeaturizer(
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unit_type=self.config.collator.unit_type,
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vocab_filepath=self.config.collator.vocab_filepath,
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spm_model_prefix=self.config.collator.spm_model_prefix)
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self.vocab_list = self.text_feature.vocab_list
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def id2token(self, texts, texts_len, text_feature):
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""" ord() id to chr() chr """
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trans = []
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for text, n in zip(texts, texts_len):
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n = n.numpy().item()
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ids = text[:n]
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trans.append(text_feature.defeaturize(ids.numpy().tolist()))
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return trans
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def translate(self, audio, audio_len):
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""""E2E translation from extracted audio feature"""
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decode_cfg = self.config.decode
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self.model.eval()
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hyps = self.model.decode(
|
|
audio,
|
|
audio_len,
|
|
text_feature=self.text_feature,
|
|
decoding_method=decode_cfg.decoding_method,
|
|
beam_size=decode_cfg.beam_size,
|
|
word_reward=decode_cfg.word_reward,
|
|
decoding_chunk_size=decode_cfg.decoding_chunk_size,
|
|
num_decoding_left_chunks=decode_cfg.num_decoding_left_chunks,
|
|
simulate_streaming=decode_cfg.simulate_streaming)
|
|
return hyps
|
|
|
|
def compute_translation_metrics(self,
|
|
utts,
|
|
audio,
|
|
audio_len,
|
|
texts,
|
|
texts_len,
|
|
bleu_func,
|
|
fout=None):
|
|
decode_cfg = self.config.decode
|
|
len_refs, num_ins = 0, 0
|
|
|
|
start_time = time.time()
|
|
|
|
refs = self.id2token(texts, texts_len, self.text_feature)
|
|
|
|
hyps = self.model.decode(
|
|
audio,
|
|
audio_len,
|
|
text_feature=self.text_feature,
|
|
decoding_method=decode_cfg.decoding_method,
|
|
beam_size=decode_cfg.beam_size,
|
|
word_reward=decode_cfg.word_reward,
|
|
decoding_chunk_size=decode_cfg.decoding_chunk_size,
|
|
num_decoding_left_chunks=decode_cfg.num_decoding_left_chunks,
|
|
simulate_streaming=decode_cfg.simulate_streaming)
|
|
|
|
decode_time = time.time() - start_time
|
|
|
|
for utt, target, result in zip(utts, refs, hyps):
|
|
len_refs += len(target.split())
|
|
num_ins += 1
|
|
if fout:
|
|
fout.write({"utt": utt, "ref": target, "hyp": result})
|
|
logger.info(f"Utt: {utt}")
|
|
logger.info(f"Ref: {target}")
|
|
logger.info(f"Hyp: {result}")
|
|
logger.info("One example BLEU = %s" %
|
|
(bleu_func([result], [[target]]).prec_str))
|
|
|
|
return dict(
|
|
hyps=hyps,
|
|
refs=refs,
|
|
bleu=bleu_func(hyps, [refs]).score,
|
|
len_refs=len_refs,
|
|
num_ins=num_ins, # num examples
|
|
num_frames=audio_len.sum().numpy().item(),
|
|
decode_time=decode_time)
|
|
|
|
@mp_tools.rank_zero_only
|
|
@paddle.no_grad()
|
|
def test(self):
|
|
assert self.args.result_file
|
|
self.model.eval()
|
|
logger.info(f"Test Total Examples: {len(self.test_loader.dataset)}")
|
|
|
|
decode_cfg = self.config.decode
|
|
bleu_func = bleu_score.char_bleu if decode_cfg.error_rate_type == 'char-bleu' else bleu_score.bleu
|
|
|
|
stride_ms = self.config.collator.stride_ms
|
|
hyps, refs = [], []
|
|
len_refs, num_ins = 0, 0
|
|
num_frames = 0.0
|
|
num_time = 0.0
|
|
with jsonlines.open(self.args.result_file, 'w') as fout:
|
|
for i, batch in enumerate(self.test_loader):
|
|
metrics = self.compute_translation_metrics(
|
|
*batch, bleu_func=bleu_func, fout=fout)
|
|
hyps += metrics['hyps']
|
|
refs += metrics['refs']
|
|
bleu = metrics['bleu']
|
|
num_frames += metrics['num_frames']
|
|
num_time += metrics["decode_time"]
|
|
len_refs += metrics['len_refs']
|
|
num_ins += metrics['num_ins']
|
|
rtf = num_time / (num_frames * stride_ms)
|
|
logger.info("RTF: %f, instance (%d), batch BELU = %f" %
|
|
(rtf, num_ins, bleu))
|
|
|
|
rtf = num_time / (num_frames * stride_ms)
|
|
msg = "Test: "
|
|
msg += "epoch: {}, ".format(self.epoch)
|
|
msg += "step: {}, ".format(self.iteration)
|
|
msg += "RTF: {}, ".format(rtf)
|
|
msg += "Test set [%s]: %s" % (len(hyps), str(bleu_func(hyps, [refs])))
|
|
logger.info(msg)
|
|
bleu_meta_path = os.path.splitext(self.args.result_file)[0] + '.bleu'
|
|
err_type_str = "BLEU"
|
|
with open(bleu_meta_path, 'w') as f:
|
|
data = json.dumps({
|
|
"epoch":
|
|
self.epoch,
|
|
"step":
|
|
self.iteration,
|
|
"rtf":
|
|
rtf,
|
|
err_type_str:
|
|
bleu_func(hyps, [refs]).score,
|
|
"dataset_hour": (num_frames * stride_ms) / 1000.0 / 3600.0,
|
|
"process_hour":
|
|
num_time / 1000.0 / 3600.0,
|
|
"num_examples":
|
|
num_ins,
|
|
"decode_method":
|
|
self.config.decode.decoding_method,
|
|
})
|
|
f.write(data + '\n')
|
|
|
|
def load_inferspec(self):
|
|
"""infer model and input spec.
|
|
|
|
Returns:
|
|
nn.Layer: inference model
|
|
List[paddle.static.InputSpec]: input spec.
|
|
"""
|
|
from paddlespeech.s2t.models.u2_st import U2STInferModel
|
|
infer_model = U2STInferModel.from_pretrained(self.test_loader,
|
|
self.config.clone(),
|
|
self.args.checkpoint_path)
|
|
feat_dim = self.test_loader.feat_dim
|
|
input_spec = [
|
|
paddle.static.InputSpec(shape=[1, None, feat_dim],
|
|
dtype='float32'), # audio, [B,T,D]
|
|
paddle.static.InputSpec(shape=[1],
|
|
dtype='int64'), # audio_length, [B]
|
|
]
|
|
return infer_model, input_spec
|
|
|
|
@paddle.no_grad()
|
|
def export(self):
|
|
infer_model, input_spec = self.load_inferspec()
|
|
assert isinstance(input_spec, list), type(input_spec)
|
|
infer_model.eval()
|
|
static_model = paddle.jit.to_static(infer_model, input_spec=input_spec)
|
|
logger.info(f"Export code: {static_model.forward.code}")
|
|
paddle.jit.save(static_model, self.args.export_path)
|