Author

Yiqun Sun

Magellan Technology Research Institute (MTRI)

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#natural language process... Review Aug 2026

When Models Hear What They Expect: Diagnosing Prosodic Heuristics in Multimodal Sarcasm Detection

Sarcasm detection is addressed through sarcasm detection, evaluating Qwen2.5-Omni and Qwen3-Omni on Mandarin Chinese and English under five modality conditions that decompose the contributions of lexical content, vocal semantics, and prosodic structure to reveal a shared stereotype of expressive prosody.

Yong-Jian Chen, Pengfei Wei, Yiqun Sun et al. · 0 citations

Preprint Aug 2026

GGSS: Geodesic-Gated Spherical Steering for Inference-Time Debiasing of Generative Vision-Language Models

GGSS---Geodesic-Gated Spherical Steering---a norm-preserving intervention that discovers a counterfactual bias subspace on the unit hypersphere, steers visual tokens along geodesic arcs, and uses an adaptive gate to focus correction on tokens that carry stronger demographic signal.

Yiqun Sun, Junyu Chen, Pengfei Wei et al. · 0 citations