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Author

Seongho Son

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Jul 2026

Meta-Learning Preferences for Multilingual LLM Alignment

A meta-learning framework for Reinforcement Learning from Human Feedback and Direct Preference Optimization that learns a transferable initialization that enables effective adaptation to a target language with minimal data.

Jiayin Lin, Seongho Son, Nam Phuong Tran et al. · 0 citations
#artificial intelligence Preprint Feb 2025

RSPO: Regularized Self-Play Alignment of Large Language Models

It is shown that RSPO with appropriate regularizers can substantially improve the length-controlled win rate on AlpacaEval-2 across a range of base models, while also achieving consistently superior performance on Arena-Hard, MT-Bench, ArmoRM, and response diversity.

Xiaohang Tang, Sangwoong Yoon, Seongho Son et al. · 6 citations · ⚡1
Preprint Jun 2026

SWE-Router: Routing in Multi-turn Agentic Software Engineering Tasks

This work introduces SWE-Router, a value-based temporal approach that lets a cheap model run for a few exploratory turns and reads the resulting partial trajectory before deciding whether to continue cheaply or to escalate to an expensive model, and provides a Bayes-optimality theorem showing that conditioning on the p...

Seongho Son, Sangwoong Yoon, Jiahua Tang et al. · 4 citations

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