arxivcs.AIcs.CV2026-07-18
Constraint-Anchored Reasoning Traces
Zehua Cheng, Wei Dai, Jiahao Sun
Autoregressive multimodal large language models (MLLMs) suffer from error snowballing: a single incorrect inference early in a chainof-thought (CoT) trace corrupts all downstream reasoning. We find that in state-of-the-art open-source MLLMs, once the first error occurs, the reaso…