collaborators

9 papers

cs.CL2026

Don't Scroll Back: Missing-Evidence Memory for Streaming Dialogue Summarization

Hyangsuk Min, Hwanjun Song

Users of modern platforms repeatedly need summaries of recent dialogue, but the window rarely contains enough context to be interpreted on its own. We formalize this setting as str…

cs.AI2026

Towards Query-Agnostic RAG Evaluation via Query Coverage and Claim Verifiability

Jeonghwan Choi, Taewon Yun, Minjeong Ban +3

Retrieval-augmented generation improves the factuality of large language models by grounding responses in retrieved evidence, yet existing evaluation frameworks struggle to provide…

cs.CL2026

Solar Open 2 Technical Report

Sungrae Park, Sanghoon Kim, Gyoungjin Gim +50

We present Solar Open 2, a 250B-A15B Mixture-of-Experts language model built for long-horizon agentic tasks, scaled up from Solar Open 1 (Solar Open 100B). To hold entire agent tra…

cs.AI2026

SoCRATES: Towards Reliable Automated Evaluation of Proactive LLM Mediation across Domains and Socio-cognitive Variations

Taewon Yun, Hyeonseong Park, Jeonghwan Choi +3

Evaluating LLM mediators remains challenging, as mediation unfolds as a real-time trajectory shaped by disputants' shifting emotions, intentions, and context. Existing testbeds rel…

cs.AI2026

Distilling Long-CoT Reasoning through Collaborative Step-wise Multi-Teacher Decoding

Taewon Yun, Jisu Shin, Jeonghwan Choi +2

Distilling large reasoning models is essential for making Long-CoT reasoning practical, as full-scale inference remains computationally prohibitive. Existing curation-based approac…

cs.AI2026

What Makes a Sale? Simulating End-to-End Seller--Buyer Retail Dynamics with LLM Agents

Jeonghwan Choi, Jibin Hwang, Gyeonghun Sun +4

Evaluating retail strategies before deployment is difficult, as outcomes are determined across multiple stages, from seller-side persuasion through buyer-seller interaction to purc…