[Wav2Vec2] Add New Wav2Vec2 Translation

src/transformers/models/speech_encoder_decoder/convert_mbart_wav2vec2_seq2seq_original_to_pytorch.py

@@ -0,0 +1,356 @@
+# coding=utf-8
+# Copyright 2021 The HuggingFace Inc. team.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+"""Convert Wav2Vec2 checkpoint."""
+
+
+import argparse
+
+import fairseq
+import torch
+from torch import nn
+
+from transformers import (
+    MBart50Tokenizer,
+    MBartConfig,
+    MBartForCausalLM,
+    SpeechEncoderDecoderConfig,
+    SpeechEncoderDecoderModel,
+    Wav2Vec2Config,
+    Wav2Vec2FeatureExtractor,
+    Wav2Vec2Model,
+    logging,
+)
+
+
+logging.set_verbosity_info()
+logger = logging.get_logger(__name__)
+
+MAPPING = {
+    "post_extract_proj": "feature_projection.projection",
+    "encoder.pos_conv.0": "encoder.pos_conv_embed.conv",
+    "self_attn.k_proj": "encoder.layers.*.attention.k_proj",
+    "self_attn.v_proj": "encoder.layers.*.attention.v_proj",
+    "self_attn.q_proj": "encoder.layers.*.attention.q_proj",
+    "self_attn.out_proj": "encoder.layers.*.attention.out_proj",
+    "self_attn_layer_norm": "encoder.layers.*.layer_norm",
+    "fc1": "encoder.layers.*.feed_forward.intermediate_dense",
+    "fc2": "encoder.layers.*.feed_forward.output_dense",
+    "final_layer_norm": "encoder.layers.*.final_layer_norm",
+    "encoder.layer_norm": "encoder.layer_norm",
+    "w2v_model.layer_norm": "feature_projection.layer_norm",
+    "quantizer.weight_proj": "quantizer.weight_proj",
+    "quantizer.vars": "quantizer.codevectors",
+    "project_q": "project_q",
+    "final_proj": "project_hid",
+    "w2v_encoder.proj": "lm_head",
+    "mask_emb": "masked_spec_embed",
+}
+TOP_LEVEL_KEYS = [
+    "lm_head",
+    "quantizer.weight_proj",
+    "quantizer.codevectors",
+    "project_q",
+    "project_hid",
+]
+
+
+def set_recursively(hf_pointer, key, value, full_name, weight_type):
+    for attribute in key.split("."):
+        hf_pointer = getattr(hf_pointer, attribute)
+
+    if weight_type is not None:
+        hf_shape = getattr(hf_pointer, weight_type).shape
+    else:
+        hf_shape = hf_pointer.shape
+
+    assert (
+        hf_shape == value.shape
+    ), f"Shape of hf {key + '.' + weight_type if weight_type is not None else ''} is {hf_shape}, but should be {value.shape} for {full_name}"
+
+    if weight_type == "weight":
+        hf_pointer.weight.data = value
+    elif weight_type == "weight_g":
+        hf_pointer.weight_g.data = value
+    elif weight_type == "weight_v":
+        hf_pointer.weight_v.data = value
+    elif weight_type == "bias":
+        hf_pointer.bias.data = value
+    else:
+        hf_pointer.data = value
+
+    logger.info(f"{key + '.' + weight_type if weight_type is not None else ''} was initialized from {full_name}.")
+
+
+def recursively_load_weights_wav2vec2(fairseq_model, hf_model):
+    unused_weights = []
+    fairseq_dict = fairseq_model.state_dict()
+
+    feature_extractor = hf_model.feature_extractor
+    adaptor = hf_model.adaptor
+
+    for name, value in fairseq_dict.items():
+        is_used = False
+        if "conv_layers" in name:
+            load_conv_layer(
+                name,
+                value,
+                feature_extractor,
+                unused_weights,
+                hf_model.config.feat_extract_norm == "group",
+            )
+            is_used = True
+        elif any(x in name for x in ["adaptor", "w2v_encoder.proj.", "w2v_proj_ln."]):
+            load_adaptor(
+                name,
+                value,
+                adaptor,
+                unused_weights,
+            )
+            is_used = True
+        else:
+            for key, mapped_key in MAPPING.items():
+                if key in name or key.split("w2v_model.")[-1] == name.split(".")[0]:
+                    is_used = True
+                    if "*" in mapped_key:
+                        layer_index = name.split(key)[0].split(".")[-2]
+                        mapped_key = mapped_key.replace("*", layer_index)
+                    if "weight_g" in name:
+                        weight_type = "weight_g"
+                    elif "weight_v" in name:
+                        weight_type = "weight_v"
+                    elif "bias" in name:
+                        weight_type = "bias"
+                    elif "weight" in name:
+                        weight_type = "weight"
+                    else:
+                        weight_type = None
+                    set_recursively(hf_model, mapped_key, value, name, weight_type)
+                continue
+        if not is_used:
+            unused_weights.append(name)
+
+    logger.warning(f"Unused weights: {unused_weights}")
+
+
+def load_conv_layer(full_name, value, feature_extractor, unused_weights, use_group_norm):
+    name = full_name.split("conv_layers.")[-1]
+    items = name.split(".")
+    layer_id = int(items[0])
+    type_id = int(items[1])
+
+    if type_id == 0:
+        if "bias" in name:
+            assert (
+                value.shape == feature_extractor.conv_layers[layer_id].conv.bias.data.shape
+            ), f"{full_name} has size {value.shape}, but {feature_extractor.conv_layers[layer_id].conv.bias.data.shape} was found."
+            feature_extractor.conv_layers[layer_id].conv.bias.data = value
+            logger.info(f"Feat extract conv layer {layer_id} was initialized from {full_name}.")
+        elif "weight" in name:
+            assert (
+                value.shape == feature_extractor.conv_layers[layer_id].conv.weight.data.shape
+            ), f"{full_name} has size {value.shape}, but {feature_extractor.conv_layers[layer_id].conv.weight.data.shape} was found."
+            feature_extractor.conv_layers[layer_id].conv.weight.data = value
+            logger.info(f"Feat extract conv layer {layer_id} was initialized from {full_name}.")
+    elif (type_id == 2 and not use_group_norm) or (type_id == 2 and layer_id == 0 and use_group_norm):
+        if "bias" in name:
+            assert (
+                value.shape == feature_extractor.conv_layers[layer_id].layer_norm.bias.data.shape
+            ), f"{full_name} has size {value.shape}, but {feature_extractor[layer_id].layer_norm.bias.data.shape} was found."
+            feature_extractor.conv_layers[layer_id].layer_norm.bias.data = value
+            logger.info(f"Feat extract layer norm weight of layer {layer_id} was initialized from {full_name}.")
+        elif "weight" in name:
+            assert (
+                value.shape == feature_extractor.conv_layers[layer_id].layer_norm.weight.data.shape
+            ), f"{full_name} has size {value.shape}, but {feature_extractor[layer_id].layer_norm.weight.data.shape} was found."
+            feature_extractor.conv_layers[layer_id].layer_norm.weight.data = value
+            logger.info(f"Feat extract layer norm weight of layer {layer_id} was initialized from {full_name}.")
+    else:
+        unused_weights.append(full_name)
+
+
+def load_adaptor(full_name, value, adaptor, unused_weights):
+    name = full_name.split("adaptor.")[-1]
+    items = name.split(".")
+
+    if items[1].isdigit():
+        layer_id = int(items[1])
+    else:
+        layer_id = None
+
+    if "adaptor" not in full_name:
+        if "proj_ln" in full_name:
+            # has to be layer norm
+            if "bias" in name:
+                assert (
+                    value.shape == adaptor.proj_layer_norm.bias.data.shape
+                ), f"{full_name} has size {value.shape}, but {adaptor.proj_layer_norm.bias.data.shape} was found."
+                adaptor.proj_layer_norm.bias.data = value
+                logger.info(f"Adapter proj layer norm bias was initialized from {full_name}.")
+            if "weight" in name:
+                assert (
+                    value.shape == adaptor.proj_layer_norm.weight.data.shape
+                ), f"{full_name} has size {value.shape}, but {adaptor.proj_layer_norm.weight.data.shape} was found."
+                adaptor.proj_layer_norm.weight.data = value
+        else:
+            # has to be projection layer
+            if "bias" in name:
+                assert (
+                    value.shape == adaptor.proj.bias.data.shape
+                ), f"{full_name} has size {value.shape}, but {adaptor.proj.bias.data.shape} was found."
+                adaptor.proj.bias.data = value
+                logger.info(f"Adapter proj layer bias was initialized from {full_name}.")
+            if "weight" in name:
+                assert (
+                    value.shape == adaptor.proj.weight.data.shape
+                ), f"{full_name} has size {value.shape}, but {adaptor.proj.weight.data.shape} was found."
+                adaptor.proj.weight.data = value
+                logger.info(f"Adapter proj layer weight was initialized from {full_name}.")
+    elif isinstance(layer_id, int):
+        if "bias" in name:
+            assert (
+                value.shape == adaptor.layers[layer_id].conv.bias.data.shape
+            ), f"{full_name} has size {value.shape}, but {adaptor.layers[layer_id].conv.bias.data.shape} was found."
+            adaptor.layers[layer_id].conv.bias.data = value
+            logger.info(f"Adapter layer {layer_id} bias was initialized from {full_name}.")
+        elif "weight" in name:
+            assert (
+                value.shape == adaptor.layers[layer_id].conv.weight.data.shape
+            ), f"{full_name} has size {value.shape}, but {adaptor.layers[layer_id].conv.weight.data.shape} was found."
+            adaptor.layers[layer_id].conv.weight.data = value
+            logger.info(f"Adapter layer {layer_id} bias was initialized from {full_name}.")
+    else:
+        unused_weights.append(full_name)
+
+
+def make_linear_from_emb(emb):
+    vocab_size, emb_size = emb.weight.shape
+    lin_layer = nn.Linear(vocab_size, emb_size, bias=False)
+    lin_layer.weight.data = emb.weight.data
+    return lin_layer
+
+
+@torch.no_grad()
+def convert_wav2vec2_checkpoint(
+    checkpoint_path,
+    pytorch_dump_folder_path,
+    dict_path,
+    config_yaml_path,
+    encoder_config_path,
+    decoder_config_path,
+    add_adaptor,
+    adaptor_kernel_size,
+    adaptor_stride,
+    decoder_start_token_id,
+    encoder_output_dim,
+):
+    """
+    Copy/paste/tweak model's weights to transformers design.
+    """
+    # load configs
+    encoder_config = Wav2Vec2Config.from_pretrained(
+        encoder_config_path,
+        add_adaptor=True,
+        adaptor_stride=adaptor_stride,
+        adaptor_kernel_size=adaptor_kernel_size,
+        use_auth_token=True,
+        output_hidden_size=encoder_output_dim,
+    )
+    decoder_config = MBartConfig.from_pretrained(decoder_config_path)
+
+    # load model
+    model, _, _ = fairseq.checkpoint_utils.load_model_ensemble_and_task(
+        [checkpoint_path],
+        arg_overrides={
+            "config_yaml": config_yaml_path,
+            "data": "/".join(dict_path.split("/")[:-1]),
+            "w2v_path": checkpoint_path,
+            "load_pretrained_decoder_from": None,
+        },
+    )
+    model = model[0].eval()
+
+    # load feature extractor
+    feature_extractor = Wav2Vec2FeatureExtractor.from_pretrained(encoder_config_path, use_auth_token=True)
+
+    # set weights for wav2vec2 encoder
+    hf_encoder = Wav2Vec2Model(encoder_config)
+
+    recursively_load_weights_wav2vec2(model.encoder, hf_encoder)
+
+    # load decoder weights
+    hf_decoder = MBartForCausalLM(decoder_config)
+    missing_keys, unexpected_keys = hf_decoder.model.decoder.load_state_dict(model.decoder.state_dict(), strict=False)
+    logger.warning(f"The following keys are missing when loading the decoder weights: {missing_keys}")
+    logger.warning(f"The following keys are unexpected when loading the decoder weights: {unexpected_keys}")
+
+    hf_wav2vec = SpeechEncoderDecoderModel(encoder=hf_encoder, decoder=hf_decoder)
+    hf_wav2vec.config.tie_word_embeddings = False
+
+    tokenizer = MBart50Tokenizer(dict_path)
+    tokenizer.save_pretrained(pytorch_dump_folder_path)
+
+    config = hf_wav2vec.config.to_dict()
+    config["pad_token_id"] = tokenizer.pad_token_id
+    config["bos_token_id"] = tokenizer.bos_token_id
+    config["eos_token_id"] = tokenizer.eos_token_id
+    config["tokenizer_class"] = "mbart50"
+    config["feature_extractor_type"] = "wav2vec2"
+
+    config["decoder_start_token_id"] = decoder_start_token_id
+
+    hf_wav2vec.config = SpeechEncoderDecoderConfig.from_dict(config)
+
+    hf_wav2vec.save_pretrained(pytorch_dump_folder_path)
+    feature_extractor.save_pretrained(pytorch_dump_folder_path)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--pytorch_dump_folder_path", default=None, type=str, help="Path to the output PyTorch model.")
+    parser.add_argument("--checkpoint_path", default=None, type=str, help="Path to fairseq checkpoint")
+    parser.add_argument("--dict_path", default=None, type=str, help="Path to dict of fine-tuned model")
+    parser.add_argument("--config_yaml_path", default=None, type=str, help="Path to yaml file of fine-tuned model")
+    parser.add_argument(
+        "--encoder_config_path",
+        default="facebook/wav2vec2-xls-r-2b",
+        type=str,
+        help="Path to hf encoder wav2vec2 checkpoint config",
+    )
+    parser.add_argument(
+        "--decoder_config_path",
+        default="facebook/mbart-large-50-one-to-many-mmt",
+        type=str,
+        help="Path to hf decoder checkpoint config",
+    )
+    parser.add_argument("--add_adaptor", default=True, type=bool, help="whethere to add model adaptor layers")
+    parser.add_argument("--adaptor_stride", default=2, type=int, help="stride of adaptor layers")
+    parser.add_argument("--adaptor_kernel_size", default=3, type=int, help="kernel size of adaptor layers")
+    parser.add_argument("--encoder_output_dim", default=1024, type=int, help="encoder output dim")
+    parser.add_argument("--start_token_id", default=250004, type=int, help="`decoder_start_token_id` of model config")
+
+    args = parser.parse_args()
+    convert_wav2vec2_checkpoint(
+        args.checkpoint_path,
+        args.pytorch_dump_folder_path,
+        args.dict_path,
+        args.config_yaml_path,
+        encoder_config_path=args.encoder_config_path,
+        decoder_config_path=args.decoder_config_path,
+        add_adaptor=args.add_adaptor,
+        adaptor_kernel_size=args.adaptor_kernel_size,
+        adaptor_stride=args.adaptor_stride,
+        decoder_start_token_id=args.start_token_id,
+        encoder_output_dim=args.encoder_output_dim,
+    )

src/transformers/models/speech_encoder_decoder/modeling_speech_encoder_decoder.py

@@ -223,7 +223,9 @@ def __init__(
         self.encoder.config = self.config.encoder
         self.decoder.config = self.config.decoder
 
-        if self.encoder.config.hidden_size != self.decoder.config.hidden_size:
+        # get encoder output hidden size
+        self.encoder_output_dim = getattr(config.encoder, "output_hidden_size", config.encoder.hidden_size)
+        if self.encoder_output_dim != self.decoder.config.hidden_size:
             # encoder outputs might need to be projected to different dimension for decoder
             self.enc_to_dec_proj = nn.Linear(self.encoder.config.hidden_size, self.decoder.config.hidden_size)
 
@@ -471,7 +473,7 @@ def forward(
         encoder_hidden_states = encoder_outputs[0]
 
         # project encoder_hidden_states
-        if self.encoder.config.hidden_size != self.decoder.config.hidden_size:
+        if self.encoder_output_dim != self.decoder.config.hidden_size:
             encoder_hidden_states = self.enc_to_dec_proj(encoder_hidden_states)
 
         # compute correct encoder attention mask

src/transformers/models/wav2vec2/configuration_wav2vec2.py

@@ -201,6 +201,11 @@ def __init__(
         pad_token_id=0,
         bos_token_id=1,
         eos_token_id=2,
+        add_adaptor=False,
+        adaptor_kernel_size=3,
+        adaptor_stride=2,
+        num_adaptor_layers=3,
+        output_hidden_size=None,
         **kwargs
     ):
         super().__init__(**kwargs, pad_token_id=pad_token_id, bos_token_id=bos_token_id, eos_token_id=eos_token_id)
@@ -263,3 +268,10 @@ def __init__(
         # ctc loss
         self.ctc_loss_reduction = ctc_loss_reduction
         self.ctc_zero_infinity = ctc_zero_infinity
+
+        # adaptor
+        self.add_adaptor = add_adaptor
+        self.adaptor_kernel_size = adaptor_kernel_size
+        self.adaptor_stride = adaptor_stride
+        self.num_adaptor_layers = num_adaptor_layers
+        self.output_hidden_size = output_hidden_size or hidden_size