Authors

Kangjun Noh

Publications 2

Preprint Open access

Reliable Self-Evolution with Imperfect Proxy Rewards

Kangjun Noh, Soyu Kim, Kyungwoo Song · 2026

Large language model (LLM)-based self-evolving search is a promising approach to scientific discovery. However, high-fidelity evaluation of every candidate is prohibitively expensive in some domains. Self-evolving systems in such settings therefore rely on low-cost but imperfect proxy rewards, which may assign high sco …

Preprint Open access

Range-GRPO: Policy Optimization via Pairwise Relations among Reward Intervals

Ryunyi Lee, Kangjun Noh, Somin Kim et al. · 2026

As the use of large language models (LLMs) expands, post-training has become increasingly important for adapting them to downstream tasks. However, obtaining reliable supervision remains costly, especially in domains without reference answers or executable verifiers. LLM-as-a-Judge provides scalable pseudo-rewards for …

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