arXiv Computation and Language
Aug 28

Information-Guided Frontier Decoding: Contextual Utility-Driven Commitment in dMLLMs

The paper introduces Information-Guided Frontier Decoding (IGFD), a training‑free strategy for diffusion multimodal language models that prioritizes the commitment of reliable semantic tokens over fragile structural ones. IGFD ranks candidates by token confidence, neighborhood uncertainty, and structural commitment risk, and uses a dynamic frontier to limit selection to locally expandable regions. Across multiple multimodal benchmarks, IGFD consistently outperforms existing decoding methods while requiring no extra training or forward passes.

By Xingyou Fang, Jingxing Zhong, Xiaosong Yuan, Xiaofeng Zhang