OracleCoder: Enhancing Text-to-SQL Generation with QLoRA+ Ensemble

NOTE: This project is on-going. The results here are not complete. Stay tuned for future updates on the evaluation of OracleCoder.

OracleCoder is a cutting-edge project aimed at advancing text-to-SQL generation capabilities. It leverages a novel approach, combining schema linking and SQL generation tasks, to fine-tune open-source language models efficiently. This project introduces an innovative ensemble method using QLoRA+ to achieve high performance while addressing data privacy and cost concerns, democratizing access to state-of-the-art text-to-SQL technologies.

Key Features

• Efficient Fine-Tuning: Utilizes LoRA+ for efficient adaptation of smaller models, enabling performance on par with larger models without significant computational resources.
• Ensemble Approach: Employs a novel ensemble strategy with QLoRA+ to enhance model performance and reliability, showcasing a path forward for achieving high accuracy in text-to-SQL generation.
• Schema Linking and SQL Generation: Decomposes the complex text-to-SQL task into schema linking and SQL generation sub-tasks, allowing for more focused model training and improved accuracy.
• Community-Driven and Open-Source: Emphasizes the importance of community-driven, open-source innovation in advancing natural language processing and database interaction technologies.

Project Structure

1. Schema Linking: The first phase involves identifying relevant tables and columns from a database schema based on a given natural language question. This step is crucial for understanding the context and narrowing down the focus for SQL generation.

2. SQL Generation: In the second phase, the model generates SQL queries based on the identified schema elements and the user's question. This step involves fine-tuning language models to accurately translate natural language questions into SQL queries.

3. Ensemble Model: Multiple models with varying learning rates for the LoRA adapters are trained and then merged into a single ensemble model. This approach enhances model performance and reliability, demonstrating a novel way to leverage ensemble methods in LLMs.

4. Evaluation: The project includes a comprehensive evaluation process, utilizing the Spider dataset and the BIRD benchmark to assess the performance of the developed models in schema linking and SQL generation tasks.

See my website for the full project.