Author

Yi Liu

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Book Open access Sep 2026

Which LLM to Fine-Tune? Agent-Driven Model Selection at Scale

Open-source model hubs now host over two million public AI models, yet teams building customer-facing AI systems must still determine which model to fine-tune for production deployment—a decision that shapes the quality, latency, and cost experienced by hundreds of millions of users. At Amazon, we spent over years of i...

Chen Luo, Yu-Lin Liu, Yi Liu et al. · Proceedings of the 20th ACM... · 0 citations

TSMOO: Solving Multi-Objective Experimentation with Constrained Thompson Sampling

This work introduces TSMOO (Thompson Sampling with Multi-Objective Optimization), a method that bridges the gap by combining multi-metric optimization with continuous learning in batch traffic allocation and outperforming both single-metric and elimination-based baselines.

K. C. Kalagarla, Wenyang Liu, Yi Liu et al. · 0 citations