collaborators

10 papers

cs.SE2026

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

Seongho Son, Sangwoong Yoon, Jiahua Tang +3

Large language models (LLMs) embedded in multi-turn agentic harnesses are reshaping software engineering (SWE), but routing every task to a frontier model is wasteful when many iss…

cs.LG2026

GDSD: Reinforcement Learning as Guided Denoiser Self-Distillation for Diffusion Language Models

Xiaohang Tang, Keyue Jiang, Che Liu +4

Reinforcement learning (RL) can be used to improve the policy (denoiser) of diffusion large language models (dLLMs), while being hindered by the intractability of the policy likeli…

cs.LG2026

MATE: Solving Contextual Markov Decision Processes with Memory of Accumulated Transition Embeddings

Himchan Hwang, Hyeokju Jeong, Gene Chung +3

We propose MATE, a simple yet effective memory architecture for solving Contextual Markov Decision Processes (CMDPs), a family of MDPs parameterized by an unobserved context. In CM…

cs.CV2026

Focus Matters: Phase-Aware Suppression for Hallucination in Vision-Language Models

Sohyeon Kim, Sang Yeon Yoon, Kyeongbo Kong

Large Vision-Language Models (LVLMs) have achieved impressive progress in multimodal reasoning, yet they remain prone to object hallucinations, generating descriptions of objects t…

cs.CL2026

Multi-Task GRPO: Reliable LLM Reasoning Across Tasks

Shyam Sundhar Ramesh, Xiaotong Ji, Matthieu Zimmer +5

RL-based post-training with GRPO is widely used to improve large language models on individual reasoning tasks. However, real-world deployment requires reliable performance across…

cs.LG2025

wd1: Weighted Policy Optimization for Reasoning in Diffusion Language Models

Xiaohang Tang, Rares Dolga, Sangwoong Yoon +1

Improving the reasoning capabilities of diffusion-based large language models (dLLMs) through reinforcement learning (RL) remains an open problem. The intractability of dLLMs likel…

cs.CL2025

This Is Your Doge, If It Please You: Exploring Deception and Robustness in Mixture of LLMs

Lorenz Wolf, Sangwoong Yoon, Ilija Bogunovic

Mixture of large language model (LLMs) Agents (MoA) architectures achieve state-of-the-art performance on prominent benchmarks like AlpacaEval 2.0 by leveraging the collaboration o…

q-fin.ST2025

Bridging Language Models and Financial Analysis

Alejandro Lopez-Lira, Jihoon Kwon, Sangwoon Yoon +2

The rapid advancements in Large Language Models (LLMs) have unlocked transformative possibilities in natural language processing, particularly within the financial sector. Financia…

cs.LG2025

Robust Multi-Objective Controlled Decoding of Large Language Models

Seongho Son, William Bankes, Sangwoong Yoon +3

We introduce Robust Multi-Objective Decoding (RMOD), a novel inference-time algorithm that robustly aligns Large Language Models (LLMs) to multiple human objectives (e.g., instruct…

cs.LG2025

RSPO: Regularized Self-Play Alignment of Large Language Models

Xiaohang Tang, Sangwoong Yoon, Seongho Son +3

Self-play-based policy optimization has emerged as an effective approach for fine-tuning large language models (LLMs), formulating preference optimization as a two-player game. How…