activity
20242026
collaborators

7 papers

cs.CL2026

Language Equality has a Price: A Systematic Investigation of Multi-turn LLM Performance for EU-24+

Sherzod Hakimov, Karl Osswald, Jelle Psurek +3

We evaluate large language models (LLMs) as language agents playing goal-directed dialogue games in self-play across 30 languages: the 24 official EU languages plus six others. Unl…

cs.AI2026

AI Realtor: Towards Grounded Persuasive Language Generation for Automated Copywriting

Jibang Wu, Chenghao Yang, Yi Wu +5

This paper develops an agentic framework that employs large language models (LLMs) for grounded persuasive language generation in automated copywriting, with real estate marketing…

cs.LG2025

Active Policy Improvement from Multiple Black-box Oracles

Xuefeng Liu, Takuma Yoneda, Chaoqi Wang +2

Reinforcement learning (RL) has made significant strides in various complex domains. However, identifying an effective policy via RL often necessitates extensive exploration. Imita…

cs.LG2025

Beyond Reward Hacking: Causal Rewards for Large Language Model Alignment

Chaoqi Wang, Zhuokai Zhao, Yibo Jiang +8

Recent advances in large language models (LLMs) have demonstrated significant progress in performing complex tasks. While Reinforcement Learning from Human Feedback (RLHF) has been…

cs.LG2025

Preference Optimization with Multi-Sample Comparisons

Chaoqi Wang, Zhuokai Zhao, Chen Zhu +8

Recent advancements in generative models, particularly large language models (LLMs) and diffusion models, have been driven by extensive pretraining on large datasets followed by po…

cs.RO2025

GRAPE: Generalizing Robot Policy via Preference Alignment

Zijian Zhang, Kaiyuan Zheng, Zhaorun Chen +7

Despite the recent advancements of vision-language-action (VLA) models on a variety of robotics tasks, they suffer from critical issues such as poor generalizability to unseen task…