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Model Details

Model Description

  • Developed by: Jesse Arzate
  • Model type: Sequence-to-Sequence (Seq2Seq) Transformer-based model
  • Language(s) (NLP): English
  • License: [More Information Needed]
  • Finetuned from model [optional]: Whisper ASR: distil-large-v3

Model Sources [optional]

Uses

Direct Use

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Downstream Use [optional]

[More Information Needed]

Out-of-Scope Use

[More Information Needed]

Bias, Risks, and Limitations

[More Information Needed]

Recommendations

Users (both direct and downstream) should be made aware of the risks, biases and limitations of the model. More information needed for further recommendations.

How to Get Started with the Model

Use the code below to get started with the model.

from transformers import (
    AutomaticSpeechRecognitionPipeline,
    WhisperForConditionalGeneration,
    WhisperTokenizer,
    WhisperProcessor,
)
from peft import PeftModel, PeftConfig


peft_model_id = "baileyarzate/whisper-distil-large-v3-atc-english" # huggingface model path
language = "en"
task = "transcribe"
device = 'cuda'
peft_config = PeftConfig.from_pretrained(peft_model_id)
model = WhisperForConditionalGeneration.from_pretrained(
    peft_config.base_model_name_or_path, device_map="cuda"
).to(device)

model = PeftModel.from_pretrained(model, peft_model_id).to(device)
tokenizer = WhisperTokenizer.from_pretrained(peft_config.base_model_name_or_path, language=language, task=task)
processor = WhisperProcessor.from_pretrained(peft_config.base_model_name_or_path, language=language, task=task)
feature_extractor = processor.feature_extractor
forced_decoder_ids = processor.get_decoder_prompt_ids(language=language, task=task)
pipe = AutomaticSpeechRecognitionPipeline(model=model, tokenizer=tokenizer, feature_extractor=feature_extractor)
model.config.use_cache = True

def transcribe(audio):
    with torch.cuda.amp.autocast():
        text = pipe(audio, generate_kwargs={"forced_decoder_ids": forced_decoder_ids}, max_new_tokens=255)["text"]
    return text
    
transcriptions_finetuned = []
for i in tqdm(range(len(df_subset))):
    # When you only have audio file path
    #transcriptions_finetuned.append(transcribe(librosa.load(df["path"][i], sr = 16000, offset = df["start"][i], duration = df["stop"][i] - df["start"][i])[0])) #,model
    # When you have audio array, saves time
    transcriptions_finetuned.append(transcribe(df_subset['array'].iloc[i]))
transcriptions_finetuned = pd.DataFrame(transcriptions_finetuned, columns=['transcription_finetuned'])
df_subset = df_subset.reset_index().drop(columns=['index'])
df_subset = pd.concat([df_subset, transcriptions_finetuned], axis=1)

Training Details

Training Data

Dataset: ATC audio recordings from actual flight operations. Size: ~250 hours of annotated data.

Training Procedure

Modeled the procedure after: https://github.com/Vaibhavs10/fast-whisper-finetuning

Preprocessing [optional]

Preprocessing: Striped leading and trailing whitespaces from transcript sentences. Removed any sentences containing the phrase "UNINTELLIGIBLE" to filter out unclear or garbled speech. Removed filler words such as "ah" or "uh".

Training Hyperparameters

  • Training regime: [More Information Needed]
training_args = Seq2SeqTrainingArguments(
    per_device_train_batch_size=4,
    gradient_accumulation_steps=2, 
    learning_rate=5e-4, 
    warmup_steps=100,
    num_train_epochs=3,
    fp16=True,
    per_device_eval_batch_size=4,
    generation_max_length=128,
    logging_steps=100,
    save_steps=500,
    save_total_limit=3,
    remove_unused_columns=False,  # required as the PeftModel forward doesn't have the signature of the wrapped model's forward
    label_names=["labels"],  # same reason as above
)

Speeds, Sizes, Times [optional]

Inference time is about 2 samples per second with an RTX A2000.

Evaluation

Final training loss: 0.103

Testing Data, Factors & Metrics

Testing Data

Dataset: ATC audio recordings from actual flight operations. Size: ~250 hours of annotated data. Randomly sampled 20% of the data with seed = 42.

[More Information Needed]

Factors

[More Information Needed]

Metrics

Word Error Rate, Normalized Word Error Rate

Results

Mean WER for 500 test samples: 0.145 with 95% confidence interval: (0.123, 0.167)

Summary

[IN PROGRESS]

Environmental Impact

Carbon emissions can be estimated using the Machine Learning Impact calculator presented in Lacoste et al. (2019).

  • Hardware Type: RTX A2000
  • Hours used: 24
  • Cloud Provider: Private Infrustructure
  • Compute Region: Southern California
  • Carbon Emitted: 1.57 kg

Technical Specifications [optional]

Model Architecture and Objective

[More Information Needed]

Compute Infrastructure

[More Information Needed]

Hardware

  • CPU: AMD EPYC 7313P 16-Core Processor 3.00 GHz
  • GPU: NVIDIA RTX A2000
  • vRAM: 6GB
  • RAM: 128GB

Software

  • OS: Windows 11 Enterprise - 21H2
  • Python: Python 3.10.14

Citation [optional]

[IN PROGRESS]

BibTeX:

[More Information Needed]

APA:

[More Information Needed]

Model Card Contact

Jesse Arzate: baileyarzate@gmail.com

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