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cs.CL2026

Latent Thinking Optimization: Your Latent Reasoning Language Model Secretly Encodes Reward Signals in Its Latent Thoughts

Hanwen Du, Yuxin Dong, Xia Ning

Large Language Models (LLMs) excel at problem solving by generating chain of thoughts in natural language, but such verbal thinking is computationally costly and prone to overthink…

cs.CL2025

EcomMMMU: Strategic Utilization of Visuals for Robust Multimodal E-commerce Models

Xinyi Ling, Hanwen Du, Zhihui Zhu +1

E-commerce platforms are rich in multimodal data, featuring a variety of images that depict product details. However, this raises an important question: do these images always enha…

cs.CL2025

Captions Speak Louder than Images: Generalizing Foundation Models for E-commerce from High-quality Multimodal Instruction Data

Xinyi Ling, Hanwen Du, Bo Peng +2

Leveraging multimodal data to drive breakthroughs in e-commerce applications through Multimodal Foundation Models (MFMs) is gaining increasing attention from the research community…

cs.CL2025

Planning with Diffusion Models for Target-Oriented Dialogue Systems

Hanwen Du, Bo Peng, Xia Ning

Target-Oriented Dialogue (TOD) remains a significant challenge in the LLM era, where strategic dialogue planning is crucial for directing conversations toward specific targets. How…

cs.CL2025

SAPIENT: Mastering Multi-turn Conversational Recommendation with Strategic Planning and Monte Carlo Tree Search

Hanwen Du, Bo Peng, Xia Ning

Conversational Recommender Systems (CRS) proactively engage users in interactive dialogues to elicit user preferences and provide personalized recommendations. Existing methods tra…