Multi-modal Data Spectrum: Multi-modal Datasets are Multi-dimensional

• URL: http://arxiv.org/abs/2509.23499v1
• Date: Sat, 27 Sep 2025 21:13:29 GMT
• Title: Multi-modal Data Spectrum: Multi-modal Datasets are Multi-dimensional
• Authors: Divyam Madaan, Varshan Muhunthan, Kyunghyun Cho, Sumit Chopra,
• Abstract summary: We present a large-scale empirical study to quantify dependencies across 23 visual question-answering benchmarks using multi-modal large language models (MLLMs)<n>Our findings show that the reliance on vision, question (text), and their interaction varies significantly, both across and within benchmarks.<n>We discover that numerous benchmarks intended to mitigate text-only biases have inadvertently amplified image-only dependencies.<n>This characterization persists across model sizes, as larger models often use these intra-modality dependencies to achieve high performance that mask an underlying lack of multi-modal reasoning.
• Score: 40.11148315577635
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Understanding the interplay between intra-modality dependencies (the contribution of an individual modality to a target task) and inter-modality dependencies (the relationships between modalities and the target task) is fundamental to advancing multi-modal learning. However, the nature of and interaction between these dependencies within current benchmark evaluations remains poorly characterized. In this work, we present a large-scale empirical study to quantify these dependencies across 23 visual question-answering benchmarks using multi-modal large language models (MLLMs) covering domains such as general and expert knowledge reasoning, optical character recognition, and document understanding. Our findings show that the reliance on vision, question (text), and their interaction varies significantly, both across and within benchmarks. We discover that numerous benchmarks intended to mitigate text-only biases have inadvertently amplified image-only dependencies. This characterization persists across model sizes, as larger models often use these intra-modality dependencies to achieve high performance that mask an underlying lack of multi-modal reasoning. We provide a quantitative characterization of multi-modal datasets, enabling a principled approach to multi-modal benchmark design and evaluation.

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