refactor feature, dict and argument for new config format

.flake8

@@ -42,6 +42,10 @@ ignore =
     # these ignores are from flake8-comprehensions; please fix!
     C400,C401,C402,C403,C404,C405,C407,C411,C413,C414,C415
 
+
+per-file-ignores =
+    */__init__.py: F401
+
 # Specify the list of error codes you wish Flake8 to report.
 select =
     E,

deepspeech/exps/deepspeech2/bin/export.py

@@ -30,6 +30,9 @@ def main(config, args):
 
 if __name__ == "__main__":
     parser = default_argument_parser()
+    # save jit model to 
+    parser.add_argument(
+        "--export_path", type=str, help="path of the jit model to save")
     parser.add_argument("--model_type")
     args = parser.parse_args()
     if args.model_type is None:

deepspeech/exps/deepspeech2/bin/test.py

@@ -31,6 +31,9 @@ def main(config, args):
 if __name__ == "__main__":
     parser = default_argument_parser()
     parser.add_argument("--model_type")
+    # save asr result to 
+    parser.add_argument(
+        "--result_file", type=str, help="path of save the asr result")
     args = parser.parse_args()
     print_arguments(args, globals())
     if args.model_type is None:

deepspeech/exps/u2/bin/alignment.py

@@ -30,6 +30,9 @@ def main(config, args):
 
 if __name__ == "__main__":
     parser = default_argument_parser()
+    # save asr result to 
+    parser.add_argument(
+        "--result_file", type=str, help="path of save the asr result")
     args = parser.parse_args()
     print_arguments(args, globals())
 

deepspeech/exps/u2/bin/export.py

@@ -30,6 +30,9 @@ def main(config, args):
 
 if __name__ == "__main__":
     parser = default_argument_parser()
+    # save jit model to 
+    parser.add_argument(
+        "--export_path", type=str, help="path of the jit model to save")
     args = parser.parse_args()
     print_arguments(args, globals())
 

deepspeech/exps/u2/bin/test.py

@@ -34,6 +34,9 @@ def main(config, args):
 
 if __name__ == "__main__":
     parser = default_argument_parser()
+    # save asr result to 
+    parser.add_argument(
+        "--result_file", type=str, help="path of save the asr result")
     args = parser.parse_args()
     print_arguments(args, globals())
 

deepspeech/exps/u2_kaldi/bin/test.py

@@ -13,6 +13,7 @@
 # limitations under the License.
 """Evaluation for U2 model."""
 import cProfile
+
 from yacs.config import CfgNode
 
 from deepspeech.training.cli import default_argument_parser
@@ -54,6 +55,14 @@ if __name__ == "__main__":
         type=str,
         default='test',
         help='run mode, e.g. test, align, export')
+    parser.add_argument(
+        '--dict-path', type=str, default=None, help='dict path.')
+    # save asr result to 
+    parser.add_argument(
+        "--result-file", type=str, help="path of save the asr result")
+    # save jit model to 
+    parser.add_argument(
+        "--export-path", type=str, help="path of the jit model to save")
     args = parser.parse_args()
     print_arguments(args, globals())
 

deepspeech/exps/u2_kaldi/model.py

@@ -25,6 +25,8 @@ import paddle
 from paddle import distributed as dist
 from yacs.config import CfgNode
 
+from deepspeech.frontend.featurizer import TextFeaturizer
+from deepspeech.frontend.utility import load_dict
 from deepspeech.io.dataloader import BatchDataLoader
 from deepspeech.models.u2 import U2Model
 from deepspeech.training.optimizer import OptimizerFactory
@@ -80,8 +82,8 @@ class U2Trainer(Trainer):
     def train_batch(self, batch_index, batch_data, msg):
         train_conf = self.config.training
         start = time.time()
-        utt, audio, audio_len, text, text_len = batch_data
 
+        utt, audio, audio_len, text, text_len = batch_data
         loss, attention_loss, ctc_loss = self.model(audio, audio_len, text,
                                                     text_len)
         # loss div by `batch_size * accum_grad`
@@ -124,6 +126,7 @@ class U2Trainer(Trainer):
         valid_losses = defaultdict(list)
         num_seen_utts = 1
         total_loss = 0.0
+
         for i, batch in enumerate(self.valid_loader):
             utt, audio, audio_len, text, text_len = batch
             loss, attention_loss, ctc_loss = self.model(audio, audio_len, text,
@@ -305,10 +308,8 @@ class U2Trainer(Trainer):
         model_conf.output_dim = self.train_loader.vocab_size
         model_conf.freeze()
         model = U2Model.from_config(model_conf)
-
         if self.parallel:
             model = paddle.DataParallel(model)
-
         logger.info(f"{model}")
         layer_tools.print_params(model, logger.info)
 
@@ -379,13 +380,13 @@ class U2Tester(U2Trainer):
     def __init__(self, config, args):
         super().__init__(config, args)
 
-    def ordid2token(self, texts, texts_len):
+    def id2token(self, texts, texts_len, text_feature):
         """ ord() id to chr() chr """
         trans = []
         for text, n in zip(texts, texts_len):
             n = n.numpy().item()
             ids = text[:n]
-            trans.append(''.join([chr(i) for i in ids]))
+            trans.append(text_feature.defeaturize(ids.numpy().tolist()))
         return trans
 
     def compute_metrics(self,
@@ -401,8 +402,11 @@ class U2Tester(U2Trainer):
         error_rate_func = error_rate.cer if cfg.error_rate_type == 'cer' else error_rate.wer
 
         start_time = time.time()
-        text_feature = self.test_loader.collate_fn.text_feature
+        text_feature = TextFeaturizer(
-        target_transcripts = self.ordid2token(texts, texts_len)
+            unit_type=self.config.collator.unit_type,
+            vocab_filepath=self.config.collator.vocab_filepath,
+            spm_model_prefix=self.config.collator.spm_model_prefix)
+        target_transcripts = self.id2token(texts, texts_len, text_feature)
         result_transcripts = self.model.decode(
             audio,
             audio_len,
@@ -450,7 +454,7 @@ class U2Tester(U2Trainer):
         self.model.eval()
         logger.info(f"Test Total Examples: {len(self.test_loader.dataset)}")
 
-        stride_ms = self.test_loader.collate_fn.stride_ms
+        stride_ms = self.config.collator.stride_ms
         error_rate_type = None
         errors_sum, len_refs, num_ins = 0.0, 0, 0
         num_frames = 0.0
@@ -525,8 +529,9 @@ class U2Tester(U2Trainer):
         self.model.eval()
         logger.info(f"Align Total Examples: {len(self.align_loader.dataset)}")
 
-        stride_ms = self.config.collate.stride_ms
+        stride_ms = self.config.collater.stride_ms
-        token_dict = self.align_loader.collate_fn.vocab_list
+        token_dict = self.args.char_list
+
         with open(self.args.result_file, 'w') as fout:
             # one example in batch
             for i, batch in enumerate(self.align_loader):
@@ -613,6 +618,11 @@ class U2Tester(U2Trainer):
         except KeyboardInterrupt:
             sys.exit(-1)
 
+    def setup_dict(self):
+        # load dictionary for debug log
+        self.args.char_list = load_dict(self.args.dict_path,
+                                        "maskctc" in self.args.model_name)
+
     def setup(self):
         """Setup the experiment.
         """
@@ -624,6 +634,8 @@ class U2Tester(U2Trainer):
         self.setup_dataloader()
         self.setup_model()
 
+        self.setup_dict()
+
         self.iteration = 0
         self.epoch = 0
 

deepspeech/exps/u2_st/bin/export.py

@@ -30,6 +30,9 @@ def main(config, args):
 
 if __name__ == "__main__":
     parser = default_argument_parser()
+    # save jit model to 
+    parser.add_argument(
+        "--export_path", type=str, help="path of the jit model to save")
     args = parser.parse_args()
     print_arguments(args, globals())
 

deepspeech/exps/u2_st/bin/test.py

@@ -34,6 +34,9 @@ def main(config, args):
 
 if __name__ == "__main__":
     parser = default_argument_parser()
+    # save asr result to 
+    parser.add_argument(
+        "--result_file", type=str, help="path of save the asr result")
     args = parser.parse_args()
     print_arguments(args, globals())
 

deepspeech/frontend/featurizer/__init__.py

@@ -11,3 +11,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+from .audio_featurizer import AudioFeaturizer  #noqa: F401
+from .speech_featurizer import SpeechFeaturizer
+from .text_featurizer import TextFeaturizer

deepspeech/frontend/featurizer/audio_featurizer.py

@@ -18,7 +18,7 @@ from python_speech_features import logfbank
 from python_speech_features import mfcc
 
 
-class AudioFeaturizer(object):
+class AudioFeaturizer():
     """Audio featurizer, for extracting features from audio contents of
     AudioSegment or SpeechSegment.
 

deepspeech/frontend/featurizer/speech_featurizer.py

@@ -16,7 +16,7 @@ from deepspeech.frontend.featurizer.audio_featurizer import AudioFeaturizer
 from deepspeech.frontend.featurizer.text_featurizer import TextFeaturizer
 
 
-class SpeechFeaturizer(object):
+class SpeechFeaturizer():
     """Speech featurizer, for extracting features from both audio and transcript
     contents of SpeechSegment.
 

deepspeech/frontend/featurizer/text_featurizer.py

@@ -14,12 +14,19 @@
 """Contains the text featurizer class."""
 import sentencepiece as spm
 
-from deepspeech.frontend.utility import EOS
+from ..utility import EOS
-from deepspeech.frontend.utility import UNK
+from ..utility import load_dict
+from ..utility import UNK
 
+__all__ = ["TextFeaturizer"]
 
-class TextFeaturizer(object):
+
-    def __init__(self, unit_type, vocab_filepath, spm_model_prefix=None):
+class TextFeaturizer():
+    def __init__(self,
+                 unit_type,
+                 vocab_filepath,
+                 spm_model_prefix=None,
+                 maskctc=False):
         """Text featurizer, for processing or extracting features from text.
 
         Currently, it supports char/word/sentence-piece level tokenizing and conversion into
@@ -34,11 +41,12 @@ class TextFeaturizer(object):
         assert unit_type in ('char', 'spm', 'word')
         self.unit_type = unit_type
         self.unk = UNK
+        self.maskctc = maskctc
+
         if vocab_filepath:
-            self._vocab_dict, self._id2token, self._vocab_list = self._load_vocabulary_from_file(
+            self.vocab_dict, self._id2token, self.vocab_list, self.unk_id, self.eos_id = self._load_vocabulary_from_file(
-                vocab_filepath)
+                vocab_filepath, maskctc)
-            self.unk_id = self._vocab_list.index(self.unk)
+            self.vocab_size = len(self.vocab_list)
-            self.eos_id = self._vocab_list.index(EOS)
 
         if unit_type == 'spm':
             spm_model = spm_model_prefix + '.model'
@@ -67,7 +75,7 @@ class TextFeaturizer(object):
         """Convert text string to a list of token indices.
 
         Args:
-            text (str): Text to process.
+            text (str): Text.
         
         Returns:
             List[int]: List of token indices.
@@ -75,8 +83,8 @@ class TextFeaturizer(object):
         tokens = self.tokenize(text)
         ids = []
         for token in tokens:
-            token = token if token in self._vocab_dict else self.unk
+            token = token if token in self.vocab_dict else self.unk
-            ids.append(self._vocab_dict[token])
+            ids.append(self.vocab_dict[token])
         return ids
 
     def defeaturize(self, idxs):
@@ -87,7 +95,7 @@ class TextFeaturizer(object):
             idxs (List[int]): List of token indices.
 
         Returns:
-            str: Text to process.
+            str: Text.
         """
         tokens = []
         for idx in idxs:
@@ -97,33 +105,6 @@ class TextFeaturizer(object):
         text = self.detokenize(tokens)
         return text
 
-    @property
-    def vocab_size(self):
-        """Return the vocabulary size.
-
-        :return: Vocabulary size.
-        :rtype: int
-        """
-        return len(self._vocab_list)
-
-    @property
-    def vocab_list(self):
-        """Return the vocabulary in list.
-
-        Returns:
-            List[str]: tokens.
-        """
-        return self._vocab_list
-
-    @property
-    def vocab_dict(self):
-        """Return the vocabulary in dict.
-
-        Returns:
-            Dict[str, int]: token str -> int
-        """
-        return self._vocab_dict
-
     def char_tokenize(self, text):
         """Character tokenizer.
 
@@ -206,14 +187,16 @@ class TextFeaturizer(object):
 
         return decode(tokens)
 
-    def _load_vocabulary_from_file(self, vocab_filepath):
+    def _load_vocabulary_from_file(self, vocab_filepath: str, maskctc: bool):
         """Load vocabulary from file."""
-        vocab_lines = []
+        vocab_list = load_dict(vocab_filepath, maskctc)
-        with open(vocab_filepath, 'r', encoding='utf-8') as file:
+        assert vocab_list is not None
-            vocab_lines.extend(file.readlines())
+
-        vocab_list = [line[:-1] for line in vocab_lines]
         id2token = dict(
             [(idx, token) for (idx, token) in enumerate(vocab_list)])
         token2id = dict(
             [(token, idx) for (idx, token) in enumerate(vocab_list)])
-        return token2id, id2token, vocab_list
+
+        unk_id = vocab_list.index(UNK)
+        eos_id = vocab_list.index(EOS)
+        return token2id, id2token, vocab_list, unk_id, eos_id

deepspeech/frontend/utility.py

@@ -15,6 +15,9 @@
 import codecs
 import json
 import math
+from typing import List
+from typing import Optional
+from typing import Text
 
 import numpy as np
 
@@ -23,16 +26,35 @@ from deepspeech.utils.log import Log
 logger = Log(__name__).getlog()
 
 __all__ = [
-    "load_cmvn", "read_manifest", "rms_to_db", "rms_to_dbfs", "max_dbfs",
+    "load_dict", "load_cmvn", "read_manifest", "rms_to_db", "rms_to_dbfs",
-    "mean_dbfs", "gain_db_to_ratio", "normalize_audio", "SOS", "EOS", "UNK",
+    "max_dbfs", "mean_dbfs", "gain_db_to_ratio", "normalize_audio", "SOS",
-    "BLANK"
+    "EOS", "UNK", "BLANK", "MASKCTC"
 ]
 
 IGNORE_ID = -1
-SOS = "<sos/eos>"
+# `sos` and `eos` using same token
+SOS = "<eos>"
 EOS = SOS
 UNK = "<unk>"
 BLANK = "<blank>"
+MASKCTC = "<mask>"
+
+
+def load_dict(dict_path: Optional[Text], maskctc=False) -> Optional[List[Text]]:
+    if dict_path is None:
+        return None
+
+    with open(dict_path, "r") as f:
+        dictionary = f.readlines()
+    char_list = [entry.split(" ")[0] for entry in dictionary]
+    if BLANK not in char_list:
+        char_list.insert(0, BLANK)
+    if EOS not in char_list:
+        char_list.append(EOS)
+    # for non-autoregressive maskctc model
+    if maskctc and MASKCTC not in char_list:
+        char_list.append(MASKCTC)
+    return char_list
 
 
 def read_manifest(
@@ -47,12 +69,20 @@ def read_manifest(
 
     Args:
         manifest_path ([type]): Manifest file to load and parse.
-        max_input_len ([type], optional): maximum output seq length, in seconds for raw wav, in frame numbers for feature data. Defaults to float('inf').
+        max_input_len ([type], optional): maximum output seq length, 
-        min_input_len (float, optional): minimum input seq length, in seconds for raw wav, in frame numbers for feature data. Defaults to 0.0.
+            in seconds for raw wav, in frame numbers for feature data. 
-        max_output_len (float, optional): maximum input seq length, in modeling units. Defaults to 500.0.
+            Defaults to float('inf').
-        min_output_len (float, optional): minimum input seq length, in modeling units. Defaults to 0.0.
+        min_input_len (float, optional): minimum input seq length, 
-        max_output_input_ratio (float, optional): maximum output seq length/output seq length ratio. Defaults to 10.0.
+            in seconds for raw wav, in frame numbers for feature data. 
-        min_output_input_ratio (float, optional): minimum output seq length/output seq length ratio. Defaults to 0.05.
+            Defaults to 0.0.
+        max_output_len (float, optional): maximum input seq length, 
+            in modeling units. Defaults to 500.0.
+        min_output_len (float, optional): minimum input seq length, 
+            in modeling units. Defaults to 0.0.
+        max_output_input_ratio (float, optional): 
+            maximum output seq length/output seq length ratio. Defaults to 10.0.
+        min_output_input_ratio (float, optional): 
+            minimum output seq length/output seq length ratio. Defaults to 0.05.
 
     Raises:
         IOError: If failed to parse the manifest.

deepspeech/training/cli.py

@@ -47,18 +47,11 @@ def default_argument_parser():
     # data and output
     parser.add_argument("--config", metavar="FILE", help="path of the config file to overwrite to default config with.")
     parser.add_argument("--dump-config", metavar="FILE", help="dump config to yaml file.")
-    # parser.add_argument("--data", metavar="DATA_DIR", help="path to the datatset.")
     parser.add_argument("--output", metavar="OUTPUT_DIR", help="path to save checkpoint and logs.")
 
     # load from saved checkpoint
     parser.add_argument("--checkpoint_path", type=str, help="path of the checkpoint to load")
 
-    # save jit model to 
-    parser.add_argument("--export_path", type=str, help="path of the jit model to save")
-
-    # save asr result to 
-    parser.add_argument("--result_file", type=str, help="path of save the asr result")
-
     # running
     parser.add_argument("--device", type=str, default='gpu', choices=["cpu", "gpu"],
                         help="device type to use, cpu and gpu are supported.")

examples/librispeech/s2/conf/transformer.yaml

@@ -3,17 +3,11 @@ data:
   train_manifest: data/manifest.train
   dev_manifest: data/manifest.dev
   test_manifest: data/manifest.test-clean
-  min_input_len: 0.5  # second
-  max_input_len: 20.0 # second
-  min_output_len: 0.0 # tokens
-  max_output_len: 400.0 # tokens
-  min_output_input_ratio: 0.05
-  max_output_input_ratio: 10.0
 
 collator:
-  vocab_filepath: data/vocab.txt
+  vocab_filepath: data/train_960_unigram5000_units.txt
   unit_type: 'spm'
-  spm_model_prefix: 'data/bpe_unigram_5000'
+  spm_model_prefix: 'data/train_960_unigram5000'
   mean_std_filepath: ""
   augmentation_config: conf/augmentation.json
   batch_size: 64

examples/librispeech/s2/local/align.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
-if [ $# != 2 ];then
+if [ $# != 3 ];then
-    echo "usage: ${0} config_path ckpt_path_prefix"
+    echo "usage: ${0} config_path dict_path ckpt_path_prefix"
     exit -1
 fi
 
@@ -13,7 +13,8 @@ if [ ${ngpu} == 0 ];then
     device=cpu
 fi
 config_path=$1
-ckpt_prefix=$2
+dict_path=$2
+ckpt_prefix=$3
 
 batch_size=1
 output_dir=${ckpt_prefix}
@@ -22,11 +23,13 @@ mkdir -p ${output_dir}
 # align dump in `result_file`
 # .tier, .TextGrid dump in `dir of result_file`
 python3 -u ${BIN_DIR}/test.py \
---run_mode 'align' \
+--model-name 'u2_kaldi' \
+--run-mode 'align' \
+--dict-path ${dict_path} \
 --device ${device} \
 --nproc 1 \
 --config ${config_path} \
---result_file ${output_dir}/${type}.align \
+--result-file ${output_dir}/${type}.align \
 --checkpoint_path ${ckpt_prefix} \
 --opts decoding.batch_size ${batch_size}
 

examples/librispeech/s2/local/export.sh

@@ -18,7 +18,8 @@ if [ ${ngpu} == 0 ];then
 fi
 
 python3 -u ${BIN_DIR}/test.py \
---run_mode 'export' \
+--model-name 'u2_kaldi' \
+--run-mode 'export' \
 --device ${device} \
 --nproc ${ngpu} \
 --config ${config_path} \

examples/librispeech/s2/local/test.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
-if [ $# != 2 ];then
+if [ $# != 3 ];then
-    echo "usage: ${0} config_path ckpt_path_prefix"
+    echo "usage: ${0} config_path dict_path ckpt_path_prefix"
     exit -1
 fi
 
@@ -14,7 +14,8 @@ if [ ${ngpu} == 0 ];then
 fi
 
 config_path=$1
-ckpt_prefix=$2
+dict_path=$2
+ckpt_prefix=$3
 
 chunk_mode=false
 if [[ ${config_path} =~ ^.*chunk_.*yaml$ ]];then
@@ -38,11 +39,13 @@ for type in attention ctc_greedy_search; do
         batch_size=64
     fi
     python3 -u ${BIN_DIR}/test.py \
-    --run_mode test \
+    --model-name u2_kaldi \
+    --run-mode test \
+    --dict-path ${dict_path} \
     --device ${device} \
     --nproc 1 \
     --config ${config_path} \
-    --result_file ${ckpt_prefix}.${type}.rsl \
+    --result-file ${ckpt_prefix}.${type}.rsl \
     --checkpoint_path ${ckpt_prefix} \
     --opts decoding.decoding_method ${type} decoding.batch_size ${batch_size}
 
@@ -56,11 +59,13 @@ for type in ctc_prefix_beam_search attention_rescoring; do
     echo "decoding ${type}"
     batch_size=1
     python3 -u ${BIN_DIR}/test.py \
-    --run_mode test \
+    --model-name u2_kaldi \
+    --run-mode test \
+    --dict-path ${dict_path} \
     --device ${device} \
     --nproc 1 \
     --config ${config_path} \
-    --result_file ${ckpt_prefix}.${type}.rsl \
+    --result-file ${ckpt_prefix}.${type}.rsl \
     --checkpoint_path ${ckpt_prefix} \
     --opts decoding.decoding_method ${type} decoding.batch_size ${batch_size}
 

examples/librispeech/s2/run.sh

@@ -5,6 +5,7 @@ source path.sh
 stage=0
 stop_stage=100
 conf_path=conf/transformer.yaml
+dict_path=data/train_960_unigram5000_units.txt
 avg_num=5
 source ${MAIN_ROOT}/utils/parse_options.sh || exit 1;
 
@@ -29,12 +30,12 @@ fi
 
 if [ ${stage} -le 3 ] && [ ${stop_stage} -ge 3 ]; then
     # test ckpt avg_n
-    CUDA_VISIBLE_DEVICES=0 ./local/test.sh ${conf_path} exp/${ckpt}/checkpoints/${avg_ckpt} || exit -1
+    CUDA_VISIBLE_DEVICES=0 ./local/test.sh ${conf_path} ${dict_path} exp/${ckpt}/checkpoints/${avg_ckpt} || exit -1
 fi
 
 if [ ${stage} -le 4 ] && [ ${stop_stage} -ge 4 ]; then
     # ctc alignment of test data
-    CUDA_VISIBLE_DEVICES=0 ./local/align.sh ${conf_path} exp/${ckpt}/checkpoints/${avg_ckpt} || exit -1
+    CUDA_VISIBLE_DEVICES=0 ./local/align.sh ${conf_path} ${dict_path} exp/${ckpt}/checkpoints/${avg_ckpt} || exit -1
 fi
 
 if [ ${stage} -le 5 ] && [ ${stop_stage} -ge 5 ]; then

examples/tiny/s0/conf/augmentation.json

@@ -29,8 +29,7 @@
       "adaptive_number_ratio": 0,
       "adaptive_size_ratio": 0,
       "max_n_time_masks": 20,
-      "replace_with_zero": true,
+      "replace_with_zero": true
-      "warp_mode": "PIL"
     },
     "prob": 1.0
   }