gperdrizet/english-french-LSTM

Bidirectional LSTM encoder-decoder for English-French translation

This model was trained for English-to-French neural machine translation using the OPUS-100 dataset.

Model details

• Architecture: Bidirectional LSTM encoder + LSTM decoder
• Repository: gperdrizet/language-models
• Training data: OPUS-100 English-French parallel corpus (100,000 sentence pairs, filtered to <=20 tokens)
• Tokenizer: MarianTokenizer (Helsinki-NLP/opus-mt-en-fr)
• Vocabulary size: ~60,000 subword tokens
• Latent dimension: 256
• Max sequence length: 22 (encoder), 24 (decoder)

Training configuration

• Optimizer: Adam (learning rate: 0.001)
• Loss function: Sparse categorical crossentropy
• Batch size: 32
• Epochs: 15
• Validation split: 10%

Usage

Loading and using the model for translation

import tensorflow as tf
from huggingface_hub import snapshot_download
from transformers import MarianTokenizer

# Download all model files to cache
model_path = snapshot_download(repo_id='gperdrizet/english-french-LSTM')

# Load inference models (SavedModel format)
encoder_model = tf.keras.models.load_model(os.path.join(model_path, 'encoder_model'))
decoder_model = tf.keras.models.load_model(os.path.join(model_path, 'decoder_model'))

# Load tokenizer
tokenizer = MarianTokenizer.from_pretrained(model_path)

For deployment/web apps

Models are saved in TensorFlow SavedModel format for:

• Production deployment (TF Serving, TF Lite, TF.js)
• Cross-version compatibility across TensorFlow versions

Fine-tuning for other language pairs

Load the training model to continue training or fine-tune:

# Load training model
training_model = tf.keras.models.load_model(os.path.join(model_path, 'training_model'))

# Continue training with new data
training_model.fit(new_encoder_input, new_decoder_target, epochs=5)

This model can be fine-tuned for other European language pairs (e.g., English-German, English-Spanish) with minimal additional training.

See the accompanying fine-tuning notebook for a complete example.

Limitations

• Trained only on short sentences (<=20 tokens)
• Performance degrades on longer sequences
• Best suited for European language pairs with similar syntax
• Uses greedy decoding (no beam search)

Citation

If you use this model, please cite:

@misc{english-french-lstm,
  author = {George Perdrizet},
  title = {English-French Neural Machine Translation},
  year = {2026},
  publisher = {Hugging Face},
  howpublished = {\url{https://huggingface.co/gperdrizet/english-french-LSTM}},
}

Model card authors

George Perdrizet