الباحثون

Chaochao Lu

المنشورات 3

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XTurnix: Large-Scale Self-Supervised Turn Control through Two-State Binary Decisions

Zhanxun Liu, Yifan Duan, Hengtao Wu وآخرون · 2026

General turn-taking behavior in real-time dialogue systems requires deciding whether to keep listening or start responding while listening, and whether to continue or stop while speaking. Existing turn detectors use heterogeneous, task-specific label spaces and are often trained on limited annotations or evaluated on i …

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CAST: Causal Advantage-Structured Training with Spatially Grounded Compositional Rewards for Diffusion Models

Shu Yu, Chaochao Lu · 2026

Online reinforcement learning has been extended to flow matching for diffusion model (DM) image generation. However, this paradigm faces three limitations: (1) Window selection. Existing methods manually set the stochastic differential equation (SDE) sampling window, i.e., the denoising steps where exploration noise is …

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