arXiv AI By Gexin Huang, Haisheng Fu, Yanting Yang, Chen Zhao, Ruinan Jin, Jiaqi Liu, Xiaoxiao Li

VLMProbe: An Open-source Library for VLM Probing and Interpretation

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VLMProbe is an open‑source library that unifies lens readouts, attention attribution, causal interventions, and sparse autoencoder analysis for vision‑language models. It offers shared adapters, calibration tools, evaluation pipelines, and visualizations to enable systematic comparison across different model architectures. The framework demonstrates that representation readouts and spatial explanations vary with the analysis goal and observation point, and that local attribution can conflict with intervention outcomes, highlighting the need for multiple evidence sources in interpretation studies.

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