Author

Jinheon Baek

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#natural language process... Preprint Sep 2026

EvoDuet: Bilevel Co-Evolution of Web Searching and Task Solving for Scientific Discovery

Evolutionary search with large language models (LLMs) can stall when progress requires external knowledge the model lacks. Supplying relevant documents helps, but simply adding web search tool can keep returning the same pages as solutions change. We introduce EvoDuet, a bi-level optimization method that co-evolves sol...

Young-Jun Lee, Jinheon Baek, Soyeong Jeong et al. · 0 citations

#artificial intelligence Preprint Sep 2026

Surprising Success, Repeated Failure: Entropy-Guided Credit Assignment for Exploration in LLM Reasoning

Reinforcement learning with verifiable rewards (RLVR) enhances reasoning in large language models (LLMs) through outcome-level feedback, yet recent approaches to finer-grained credit assignment often require auxiliary models, additional sampling, or privileged information. Although policy entropy provides a readily ava...

Woongyeong Yeo, Minki Kang, Chanuk Lee et al. · 0 citations

#artificial intelligence Preprint Sep 2026

Knowing When Thinking Is Not Enough: Teaching Small Reasoning Models to Reason Beyond Their Parametric Knowledge

Scaling test-time computation is a powerful way to improve language-model reasoning, and is particularly appealing for small reasoning models (sRMs) that are cheap to serve. However, is additional thinking always the right operation? By intervening at intermediate reasoning states across two model families and multiple...

Chanuk Lee, Minki Kang, Sangwoo Park et al. · 0 citations