arXiv Machine Learning By Sidi Chang, Peiying Zhu

High-Value Synthetic Supervision for Parameter-Efficient Adaptation of a Compact Japanese Speech Model

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The paper presents a synthetic pipeline that converts Japanese care handoffs into six-field structured notes, using 182 synthetic audio clips to adapt a 1.47 B‑parameter audio model. Parameter‑efficient adaptation via rank‑16 LoRA achieves 97.7 % of the full‑fine‑tuning performance while training only 12.4 M parameters (≈0.85 % of the backbone). Both full tuning and LoRA outperform the unadapted model on a synthetic test set, demonstrating that a compact model can learn a narrow audio‑to‑structure transformation from limited synthetic data.

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