Author

Hongzhu Guo

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#computer vision Review Sep 2026

From Routing Signals to Selective Review: Visual regrounding in MoE VLMs

Vision-language models (VLMs) may accept false visual premises, answering questions about a target object's color, count, location, or state even when it is absent. We call this reliability-critical behavior a target-absence grounding failure. Existing visual-grounding detectors primarily rely on generated responses, h...

Hong-Zhu Guo, Mohsen Fayyaz, Nan-Yun Peng · 0 citations

Preprint Aug 2026

SAEVerbalizer: Generating Explanations for Sparse Autoencoder Features via Representation Verbalization

SAEVerbalizer is introduced, a framework that injects SAE decoder directions into an LLM's representations and fine-tunes the LLM's downstream layers to generate natural-language explanations of the injected features.

Weihang Meng, Hong-Zhu Guo, Yi Jing et al. · 0 citations