research · since 2026-09-20
NL2SQL Fine-tune Reliability
Mohan Vishe
Reproducible MIT evaluation of QLoRA fine-tuning for Qwen2.5-Coder-3B on BIRD Mini-Dev, measuring capability (pass@10), repeatability (pass^10), failure modes and comparison with a prompted 7B model.
text-to-sqlbenchmarkfine-tuningreliability
desk notes
Final reproducible results published Sept. 26, 2026. On 496 scored questions × 10 attempts per arm, fine-tuning raised pass@10 by 4.2 points and pass^10 by 4.4, leaving the reliability gap statistically unchanged. Attempt-level SQL crashes fell 19.8 points while silent wrong-row executions rose 14.5 points. Repository publishes attempts, scorer, tests, run logs and confidence intervals; 0 stars/0 forks at verification.