Add SEW CTC models (#14158)

* Add SEW CTC models

* Update paths

* Update paths

src/transformers/models/sew/configuration_sew.py

@@ -164,7 +164,7 @@ class SEWConfig(PretrainedConfig):
         mask_time_length=10,
         mask_feature_prob=0.0,
         mask_feature_length=10,
-        ctc_loss_reduction="sum",
+        ctc_loss_reduction="mean",
         ctc_zero_infinity=False,
         use_weighted_layer_sum=False,
         classifier_proj_size=256,

src/transformers/models/sew/convert_sew_original_pytorch_checkpoint_to_pytorch.py

@@ -52,7 +52,7 @@ MAPPING = {
     "final_layer_norm": "encoder.layers.*.final_layer_norm",
     "encoder.upsample.0": "encoder.upsample.projection",
     "encoder.layer_norm": "encoder.layer_norm",
-    "w2v_encoder.layer_norm": "layer_norm",
+    "w2v_model.layer_norm": "layer_norm",
     "w2v_encoder.proj": "lm_head",
     "mask_emb": "masked_spec_embed",
 }
@@ -106,7 +106,7 @@ def recursively_load_weights(fairseq_model, hf_model, is_finetuned):
             for key, mapped_key in MAPPING.items():
                 mapped_key = "sew." + mapped_key if (is_finetuned and mapped_key != "lm_head") else mapped_key
 
-                if key in name or key.split("w2v_encoder.")[-1] == name.split(".")[0]:
+                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]
@@ -165,13 +165,13 @@ def load_conv_layer(full_name, value, feature_extractor, unused_weights, use_gro
         unused_weights.append(full_name)
 
 
-def convert_config(model):
+def convert_config(model, is_finetuned):
     config = SEWConfig()
-    fs_config = model.cfg
+    if is_finetuned:
+        fs_config = model.w2v_encoder.w2v_model.cfg
+    else:
+        fs_config = model.cfg
 
-    config.activation_dropout = fs_config.activation_dropout
-    config.apply_spec_augment = fs_config.mask_prob > 0 or fs_config.mask_channel_prob > 0
-    config.attention_dropout = fs_config.attention_dropout
     config.conv_bias = fs_config.conv_bias
     conv_layers = eval(fs_config.conv_feature_layers)
     config.conv_dim = [x[0] for x in conv_layers]
@@ -179,19 +179,13 @@ def convert_config(model):
     config.conv_stride = [x[2] for x in conv_layers]
     config.feat_extract_activation = "gelu"
     config.feat_extract_norm = "layer" if fs_config.extractor_mode == "layer_norm" else "group"
-    config.feat_proj_dropout = fs_config.dropout_input
     config.final_dropout = 0.0
     config.hidden_act = fs_config.activation_fn.name
-    config.hidden_dropout = fs_config.dropout
     config.hidden_size = fs_config.encoder_embed_dim
     config.initializer_range = 0.02
     config.intermediate_size = fs_config.encoder_ffn_embed_dim
     config.layer_norm_eps = 1e-5
     config.layerdrop = fs_config.encoder_layerdrop
-    config.mask_feature_length = fs_config.mask_channel_length
-    config.mask_feature_prob = fs_config.mask_channel_prob
-    config.mask_time_length = fs_config.mask_length
-    config.mask_time_prob = fs_config.mask_prob
     config.num_attention_heads = fs_config.encoder_attention_heads
     config.num_conv_pos_embedding_groups = fs_config.conv_pos_groups
     config.num_conv_pos_embeddings = fs_config.conv_pos
@@ -199,6 +193,24 @@ def convert_config(model):
     config.num_hidden_layers = fs_config.encoder_layers
     config.squeeze_factor = fs_config.squeeze_factor
 
+    # take care of any params that are overridden by the Wav2VecCtc model
+    if is_finetuned:
+        fs_config = model.cfg
+        config.final_dropout = fs_config.final_dropout
+        config.layerdrop = fs_config.layerdrop
+    config.activation_dropout = fs_config.activation_dropout
+    config.apply_spec_augment = fs_config.mask_prob > 0 or fs_config.mask_channel_prob > 0
+    config.attention_dropout = fs_config.attention_dropout
+    config.feat_proj_dropout = fs_config.dropout_input
+    config.hidden_dropout = fs_config.dropout
+    config.mask_feature_length = fs_config.mask_channel_length
+    config.mask_feature_prob = fs_config.mask_channel_prob
+    config.mask_time_length = fs_config.mask_length
+    config.mask_time_prob = fs_config.mask_prob
+
+    config.feature_extractor_type = "Wav2Vec2FeatureExtractor"
+    config.tokenizer_class = "Wav2Vec2CTCTokenizer"
+
     return config
 
 
@@ -220,7 +232,7 @@ def convert_sew_checkpoint(
     if config_path is not None:
         config = SEWConfig.from_pretrained(config_path)
     else:
-        config = convert_config(model[0])
+        config = convert_config(model[0], is_finetuned)
     model = model[0].eval()
 
     return_attention_mask = True if config.feat_extract_norm == "layer" else False
@@ -238,6 +250,8 @@ def convert_sew_checkpoint(
 
             # important change bos & pad token id since CTC symbol is <pad> and
             # not <s> as in fairseq
+            target_dict.indices[target_dict.bos_word] = target_dict.pad_index
+            target_dict.indices[target_dict.pad_word] = target_dict.bos_index
             config.bos_token_id = target_dict.pad_index
             config.pad_token_id = target_dict.bos_index
             config.eos_token_id = target_dict.eos_index

src/transformers/models/sew/modeling_sew.py

@@ -26,12 +26,7 @@ from torch.nn import CrossEntropyLoss
 from transformers.deepspeed import is_deepspeed_zero3_enabled
 
 from ...activations import ACT2FN
-from ...file_utils import (
-    add_code_sample_docstrings,
-    add_start_docstrings,
-    add_start_docstrings_to_model_forward,
-    replace_return_docstrings,
-)
+from ...file_utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward
 from ...modeling_outputs import BaseModelOutput, CausalLMOutput, SequenceClassifierOutput
 from ...modeling_utils import PreTrainedModel
 from ...utils import logging
@@ -788,6 +783,11 @@ class SEWModel(SEWPreTrainedModel):
         self.feature_extractor = SEWFeatureExtractor(config)
         self.layer_norm = nn.LayerNorm(config.conv_dim[-1], eps=config.layer_norm_eps)
 
+        self.project_features = config.conv_dim[-1] != config.hidden_size
+        if self.project_features:
+            self.feature_projection = nn.Linear(config.conv_dim[-1], config.hidden_size)
+        self.feature_dropout = nn.Dropout(config.feat_proj_dropout)
+
         self.masked_spec_embed = nn.Parameter(torch.FloatTensor(config.hidden_size).uniform_())
 
         self.encoder = SEWEncoder(config)
@@ -841,7 +841,13 @@ class SEWModel(SEWPreTrainedModel):
         return hidden_states
 
     @add_start_docstrings_to_model_forward(SEW_INPUTS_DOCSTRING)
-    @replace_return_docstrings(output_type=BaseModelOutput, config_class=_CONFIG_FOR_DOC)
+    @add_code_sample_docstrings(
+        processor_class=_PROCESSOR_FOR_DOC,
+        checkpoint=_CHECKPOINT_FOR_DOC,
+        output_type=BaseModelOutput,
+        config_class=_CONFIG_FOR_DOC,
+        modality="audio",
+    )
     def forward(
         self,
         input_values,
@@ -851,30 +857,6 @@ class SEWModel(SEWPreTrainedModel):
         output_hidden_states=None,
         return_dict=None,
     ):
-        """
-
-        Returns:
-
-        Example::
-
-            >>> from transformers import Wav2Vec2Processor, SEWModel
-            >>> from datasets import load_dataset
-            >>> import soundfile as sf
-
-            >>> processor = Wav2Vec2Processor.from_pretrained("asapp/sew-tiny-100k")
-            >>> model = SEWModel.from_pretrained("asapp/sew-tiny-100k")
-
-            >>> def map_to_array(batch):
-            ...     speech, _ = sf.read(batch["file"])
-            ...     batch["speech"] = speech
-            ...     return batch
-
-            >>> ds = load_dataset("patrickvonplaten/librispeech_asr_dummy", "clean", split="validation")
-            >>> ds = ds.map(map_to_array)
-
-            >>> input_values = processor(ds["speech"][0], return_tensors="pt").input_values  # Batch size 1
-            >>> hidden_states = model(input_values).last_hidden_state
-        """
         output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
         output_hidden_states = (
             output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
@@ -885,11 +867,15 @@ class SEWModel(SEWPreTrainedModel):
         extract_features = extract_features.transpose(1, 2)
         extract_features = self.layer_norm(extract_features)
 
+        if self.project_features:
+            extract_features = self.feature_projection(extract_features)
+        hidden_states = self.feature_dropout(extract_features)
+
         if attention_mask is not None:
             # compute reduced attention_mask corresponding to feature vectors
-            attention_mask = self._get_feature_vector_attention_mask(extract_features.shape[1], attention_mask)
+            attention_mask = self._get_feature_vector_attention_mask(hidden_states.shape[1], attention_mask)
 
-        hidden_states = self._mask_hidden_states(extract_features, mask_time_indices=mask_time_indices)
+        hidden_states = self._mask_hidden_states(hidden_states, mask_time_indices=mask_time_indices)
 
         encoder_outputs = self.encoder(
             hidden_states,

src/transformers/models/sew_d/configuration_sew_d.py

@@ -189,7 +189,7 @@ class SEWDConfig(PretrainedConfig):
         mask_time_length=10,
         mask_feature_prob=0.0,
         mask_feature_length=10,
-        ctc_loss_reduction="sum",
+        ctc_loss_reduction="mean",
         ctc_zero_infinity=False,
         use_weighted_layer_sum=False,
         classifier_proj_size=256,

src/transformers/models/sew_d/convert_sew_d_original_pytorch_checkpoint_to_pytorch.py

@@ -54,7 +54,7 @@ MAPPING = {
     "encoder.encoder.LayerNorm": "encoder.encoder.LayerNorm",
     "encoder.upsample.0": "encoder.upsample.projection",
     "encoder.layer_norm": "encoder.layer_norm",
-    "w2v_encoder.layer_norm": "layer_norm",
+    "w2v_model.layer_norm": "layer_norm",
     "w2v_encoder.proj": "lm_head",
     "mask_emb": "masked_spec_embed",
 }
@@ -91,7 +91,7 @@ def recursively_load_weights(fairseq_model, hf_model, is_finetuned):
     unused_weights = []
     fairseq_dict = fairseq_model.state_dict()
 
-    feature_extractor = hf_model.sew.feature_extractor if is_finetuned else hf_model.feature_extractor
+    feature_extractor = hf_model.sew_d.feature_extractor if is_finetuned else hf_model.feature_extractor
 
     for name, value in fairseq_dict.items():
         is_used = False
@@ -108,7 +108,7 @@ def recursively_load_weights(fairseq_model, hf_model, is_finetuned):
             for key, mapped_key in MAPPING.items():
                 mapped_key = "sew_d." + mapped_key if (is_finetuned and mapped_key != "lm_head") else mapped_key
 
-                if key in name or key.split("w2v_encoder.")[-1] == name.split(".")[0]:
+                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]
@@ -169,13 +169,13 @@ def load_conv_layer(full_name, value, feature_extractor, unused_weights, use_gro
         unused_weights.append(full_name)
 
 
-def convert_config(model):
+def convert_config(model, is_finetuned):
     config = SEWDConfig()
-    fs_config = model.cfg
+    if is_finetuned:
+        fs_config = model.w2v_encoder.w2v_model.cfg
+    else:
+        fs_config = model.cfg
 
-    config.activation_dropout = fs_config.activation_dropout
-    config.apply_spec_augment = fs_config.mask_prob > 0 or fs_config.mask_channel_prob > 0
-    config.attention_dropout = fs_config.attention_dropout
     config.conv_bias = fs_config.conv_bias
     conv_layers = eval(fs_config.conv_feature_layers)
     config.conv_dim = [x[0] for x in conv_layers]
@@ -183,19 +183,13 @@ def convert_config(model):
     config.conv_stride = [x[2] for x in conv_layers]
     config.feat_extract_activation = "gelu"
     config.feat_extract_norm = "layer" if fs_config.extractor_mode == "layer_norm" else "group"
-    config.feat_proj_dropout = fs_config.dropout_input
     config.final_dropout = 0.0
     config.hidden_act = fs_config.activation_fn.name
-    config.hidden_dropout = fs_config.dropout
     config.hidden_size = fs_config.encoder_embed_dim
     config.initializer_range = 0.02
     config.intermediate_size = fs_config.encoder_ffn_embed_dim
     config.layer_norm_eps = 1e-5
     config.layerdrop = fs_config.encoder_layerdrop
-    config.mask_feature_length = fs_config.mask_channel_length
-    config.mask_feature_prob = fs_config.mask_channel_prob
-    config.mask_time_length = fs_config.mask_length
-    config.mask_time_prob = fs_config.mask_prob
     config.num_attention_heads = fs_config.encoder_attention_heads
     config.num_conv_pos_embedding_groups = fs_config.conv_pos_groups
     config.num_conv_pos_embeddings = fs_config.conv_pos
@@ -211,6 +205,24 @@ def convert_config(model):
     config.pos_att_type = tuple(fs_config.pos_att_type.split("|"))
     config.norm_rel_ebd = fs_config.norm_rel_ebd
 
+    # take care of any params that are overridden by the Wav2VecCtc model
+    if is_finetuned:
+        fs_config = model.cfg
+        config.final_dropout = fs_config.final_dropout
+        config.layerdrop = fs_config.layerdrop
+    config.activation_dropout = fs_config.activation_dropout
+    config.apply_spec_augment = fs_config.mask_prob > 0 or fs_config.mask_channel_prob > 0
+    config.attention_dropout = fs_config.attention_dropout
+    config.feat_proj_dropout = fs_config.dropout_input
+    config.hidden_dropout = fs_config.dropout
+    config.mask_feature_length = fs_config.mask_channel_length
+    config.mask_feature_prob = fs_config.mask_channel_prob
+    config.mask_time_length = fs_config.mask_length
+    config.mask_time_prob = fs_config.mask_prob
+
+    config.feature_extractor_type = "Wav2Vec2FeatureExtractor"
+    config.tokenizer_class = "Wav2Vec2CTCTokenizer"
+
     return config
 
 
@@ -232,7 +244,7 @@ def convert_sew_checkpoint(
     if config_path is not None:
         config = SEWDConfig.from_pretrained(config_path)
     else:
-        config = convert_config(model[0])
+        config = convert_config(model[0], is_finetuned)
     model = model[0].eval()
 
     return_attention_mask = True if config.feat_extract_norm == "layer" else False
@@ -250,6 +262,8 @@ def convert_sew_checkpoint(
 
             # important change bos & pad token id since CTC symbol is <pad> and
             # not <s> as in fairseq
+            target_dict.indices[target_dict.bos_word] = target_dict.pad_index
+            target_dict.indices[target_dict.pad_word] = target_dict.bos_index
             config.bos_token_id = target_dict.pad_index
             config.pad_token_id = target_dict.bos_index
             config.eos_token_id = target_dict.eos_index

src/transformers/models/sew_d/modeling_sew_d.py

@@ -27,12 +27,7 @@ from torch.nn import CrossEntropyLoss, LayerNorm
 from transformers.deepspeed import is_deepspeed_zero3_enabled
 
 from ...activations import ACT2FN
-from ...file_utils import (
-    add_code_sample_docstrings,
-    add_start_docstrings,
-    add_start_docstrings_to_model_forward,
-    replace_return_docstrings,
-)
+from ...file_utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward
 from ...modeling_outputs import BaseModelOutput, CausalLMOutput, SequenceClassifierOutput
 from ...modeling_utils import PreTrainedModel
 from ...utils import logging
@@ -1291,13 +1286,17 @@ SEWD_INPUTS_DOCSTRING = r"""
     "The bare SEW-D Model transformer outputting raw hidden-states without any specific head on top.",
     SEWD_START_DOCSTRING,
 )
+# Copied from transformers.models.sew.modeling_sew.SEWModel with SEW->SEWD
 class SEWDModel(SEWDPreTrainedModel):
     def __init__(self, config: SEWDConfig):
         super().__init__(config)
         self.config = config
         self.feature_extractor = SEWDFeatureExtractor(config)
         self.layer_norm = nn.LayerNorm(config.conv_dim[-1], eps=config.layer_norm_eps)
-        self.feature_projection = nn.Linear(config.conv_dim[-1], config.hidden_size)
+
+        self.project_features = config.conv_dim[-1] != config.hidden_size
+        if self.project_features:
+            self.feature_projection = nn.Linear(config.conv_dim[-1], config.hidden_size)
         self.feature_dropout = nn.Dropout(config.feat_proj_dropout)
 
         self.masked_spec_embed = nn.Parameter(torch.FloatTensor(config.hidden_size).uniform_())
@@ -1353,7 +1352,13 @@ class SEWDModel(SEWDPreTrainedModel):
         return hidden_states
 
     @add_start_docstrings_to_model_forward(SEWD_INPUTS_DOCSTRING)
-    @replace_return_docstrings(output_type=BaseModelOutput, config_class=_CONFIG_FOR_DOC)
+    @add_code_sample_docstrings(
+        processor_class=_PROCESSOR_FOR_DOC,
+        checkpoint=_CHECKPOINT_FOR_DOC,
+        output_type=BaseModelOutput,
+        config_class=_CONFIG_FOR_DOC,
+        modality="audio",
+    )
     def forward(
         self,
         input_values,
@@ -1363,30 +1368,6 @@ class SEWDModel(SEWDPreTrainedModel):
         output_hidden_states=None,
         return_dict=None,
     ):
-        """
-
-        Returns:
-
-        Example::
-
-            >>> from transformers import Wav2Vec2Processor, SEWDModel
-            >>> from datasets import load_dataset
-            >>> import soundfile as sf
-
-            >>> processor = Wav2Vec2Processor.from_pretrained("asapp/sew-tiny-100k")
-            >>> model = SEWDModel.from_pretrained("asapp/sew-tiny-100k")
-
-            >>> def map_to_array(batch):
-            ...     speech, _ = sf.read(batch["file"])
-            ...     batch["speech"] = speech
-            ...     return batch
-
-            >>> ds = load_dataset("patrickvonplaten/librispeech_asr_dummy", "clean", split="validation")
-            >>> ds = ds.map(map_to_array)
-
-            >>> input_values = processor(ds["speech"][0], return_tensors="pt").input_values  # Batch size 1
-            >>> hidden_states = model(input_values).last_hidden_state
-        """
         output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
         output_hidden_states = (
             output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
@@ -1397,12 +1378,13 @@ class SEWDModel(SEWDPreTrainedModel):
         extract_features = extract_features.transpose(1, 2)
         extract_features = self.layer_norm(extract_features)
 
+        if self.project_features:
+            extract_features = self.feature_projection(extract_features)
+        hidden_states = self.feature_dropout(extract_features)
+
         if attention_mask is not None:
             # compute reduced attention_mask corresponding to feature vectors
-            attention_mask = self._get_feature_vector_attention_mask(extract_features.shape[1], attention_mask)
-
-        hidden_states = self.feature_projection(extract_features)
-        hidden_states = self.feature_dropout(hidden_states)
+            attention_mask = self._get_feature_vector_attention_mask(hidden_states.shape[1], attention_mask)
 
         hidden_states = self._mask_hidden_states(hidden_states, mask_time_indices=mask_time_indices)
 

tests/test_modeling_sew.py

@@ -22,7 +22,7 @@ import pytest
 
 from tests.test_modeling_common import floats_tensor, ids_tensor, random_attention_mask
 from transformers import SEWConfig, is_torch_available
-from transformers.testing_utils import require_datasets, require_soundfile, require_torch, slow, tooslow, torch_device
+from transformers.testing_utils import require_datasets, require_soundfile, require_torch, slow, torch_device
 
 from .test_configuration_common import ConfigTester
 from .test_modeling_common import ModelTesterMixin, _config_zero_init
@@ -531,27 +531,24 @@ class SEWModelIntegrationTest(unittest.TestCase):
         self.assertTrue(torch.allclose(outputs[:, -4:, -4:], expected_outputs_last, atol=5e-3))
         self.assertTrue(abs(outputs.sum() - expected_output_sum) < 5)
 
-    @tooslow
     def test_inference_ctc_batched(self):
-        # TODO: enable this test once the finetuned models are available
-        model = SEWForCTC.from_pretrained("asapp/sew-tiny-100k-ft-100h").to(torch_device)
-        processor = Wav2Vec2Processor.from_pretrained("asapp/sew-tiny-100k-ft-100h", do_lower_case=True)
+        model = SEWForCTC.from_pretrained("asapp/sew-tiny-100k-ft-ls100h").to(torch_device)
+        processor = Wav2Vec2Processor.from_pretrained("asapp/sew-tiny-100k-ft-ls100h", do_lower_case=True)
 
         input_speech = self._load_datasamples(2)
 
         inputs = processor(input_speech, return_tensors="pt", padding=True)
 
         input_values = inputs.input_values.to(torch_device)
-        attention_mask = inputs.attention_mask.to(torch_device)
 
         with torch.no_grad():
-            logits = model(input_values, attention_mask=attention_mask).logits
+            logits = model(input_values).logits
 
         predicted_ids = torch.argmax(logits, dim=-1)
         predicted_trans = processor.batch_decode(predicted_ids)
 
         EXPECTED_TRANSCRIPTIONS = [
             "a man said to the universe sir i exist",
-            "sweat covered brion's body trickling into the tight loin cloth that was the only garment he wore",
+            "swet covered brian's body trickling into the tightloine closs hat was the only garment he wore",
         ]
         self.assertListEqual(predicted_trans, EXPECTED_TRANSCRIPTIONS)

tests/test_modeling_sew_d.py

@@ -22,7 +22,7 @@ import pytest
 
 from tests.test_modeling_common import floats_tensor, ids_tensor, random_attention_mask
 from transformers import SEWDConfig, is_torch_available
-from transformers.testing_utils import require_datasets, require_soundfile, require_torch, slow, tooslow, torch_device
+from transformers.testing_utils import require_datasets, require_soundfile, require_torch, slow, torch_device
 
 from .test_configuration_common import ConfigTester
 from .test_modeling_common import ModelTesterMixin, _config_zero_init
@@ -544,27 +544,24 @@ class SEWDModelIntegrationTest(unittest.TestCase):
         self.assertTrue(torch.allclose(outputs[:, -4:, -4:], expected_outputs_last, atol=5e-3))
         self.assertTrue(abs(outputs.sum() - expected_output_sum) < 5)
 
-    @tooslow
     def test_inference_ctc_batched(self):
-        # TODO: enable this test once the finetuned models are available
-        model = SEWDForCTC.from_pretrained("asapp/sew-d-tiny-100k-ft-100h").to(torch_device)
-        processor = Wav2Vec2Processor.from_pretrained("asapp/sew-d-tiny-100k-ft-100h", do_lower_case=True)
+        model = SEWDForCTC.from_pretrained("asapp/sew-d-tiny-100k-ft-ls100h").to(torch_device)
+        processor = Wav2Vec2Processor.from_pretrained("asapp/sew-d-tiny-100k-ft-ls100h", do_lower_case=True)
 
         input_speech = self._load_datasamples(2)
 
         inputs = processor(input_speech, return_tensors="pt", padding=True)
 
         input_values = inputs.input_values.to(torch_device)
-        attention_mask = inputs.attention_mask.to(torch_device)
 
         with torch.no_grad():
-            logits = model(input_values, attention_mask=attention_mask).logits
+            logits = model(input_values).logits
 
         predicted_ids = torch.argmax(logits, dim=-1)
         predicted_trans = processor.batch_decode(predicted_ids)
 
         EXPECTED_TRANSCRIPTIONS = [
             "a man said to the universe sir i exist",
-            "sweat covered brion's body trickling into the tight loin cloth that was the only garment he wore",
+            "swet covered breon's body trickling into the titlowing closs that was the only garmened he war",
         ]
         self.assertListEqual(predicted_trans, EXPECTED_TRANSCRIPTIONS)