Authors: Yuhui Zhang, Yuchang Su, Yiming Liu, Xiaohan Wang, James Burgess, Elaine Sui, Chenyu Wang, Josiah Aklilu, Alejandro Lozano, Anjiang Wei, Ludwig Schmidt, Serena Yeung-Levy
Abstract: The rapid development of vision language models (VLMs) demands rigorous and
reliable evaluation. However, current visual question answering (VQA)
benchmarks often depend on open-ended questions, making accurate evaluation
difficult due to the variability in natural language responses. To address
this, we introduce AutoConverter, an agentic framework that automatically
converts these open-ended questions into multiple-choice format, enabling
objective evaluation while reducing the costly question creation process. Our
experiments demonstrate that AutoConverter can generate correct and challenging
multiple-choice questions, with VLMs demonstrating consistently similar or
lower accuracy on these questions compared to human-created ones. Using
AutoConverter, we construct VMCBench, a benchmark created by transforming 20
existing VQA datasets into a unified multiple-choice format, totaling 9,018
questions. We comprehensively evaluate 33 state-of-the-art VLMs on VMCBench,
setting a new standard for scalable, consistent, and reproducible VLM
evaluation.
Source: http://arxiv.org/abs/2501.03225v1
