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Yuchen Yan

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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. · 0 citations
#artificial intelligence Preprint Sep 2026

Predict, Don't Iterate: Efficient Adaptive-Length Infilling for Diffusion Language Models

Diffusion language models (DLMs) have emerged as a promising alternative to the auto-regressive paradigm. With bidirectional attention and any-order generation, DLMs naturally fit infilling tasks, which require generating a middle span conditioned on both the prefix and the suffix. However, infilling is sensitive to th...

Hao-Bo Xu, Si-Rui Chen, Yuanchen Bei et al. · 0 citations
#artificial intelligence Preprint Aug 2026

From Inference to Adaptation: A Unified Optimal Transport View of Vision Language Model

This work proposes a principled VLM TTA method called \algname, and theoretically reveals that the InfoNCE loss can be neatly reformulated as a Wasserstein OT formulation, thereby unifying the objectives of the inference and adaptation of VLMs to achieve their mutual benefits.

Qi Yu, Zhichen Zeng, Katherine Tieu et al. · 0 citations

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