Modeling Image-Caption Rating from Comparative Judgments

• URL: http://arxiv.org/abs/2602.00381v1
• Date: Fri, 30 Jan 2026 23:00:07 GMT
• Title: Modeling Image-Caption Rating from Comparative Judgments
• Authors: Kezia Minni, Qiang Zhang, Monoshiz Mahbub Khan, Zhe Yu,
• Abstract summary: We propose a machine learning framework that models such comparative judgments instead of direct ratings.<n>The model can then be applied to rank unseen image-caption pairs in the same way as a regression model trained on direct ratings.
• Score: 8.460083530922931
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Rating the accuracy of captions in describing images is time-consuming and subjective for humans. In contrast, it is often easier for people to compare two captions and decide which one better matches a given image. In this work, we propose a machine learning framework that models such comparative judgments instead of direct ratings. The model can then be applied to rank unseen image-caption pairs in the same way as a regression model trained on direct ratings. Using the VICR dataset, we extract visual features with ResNet-50 and text features with MiniLM, then train both a regression model and a comparative learning model. While the regression model achieves better performance (Pearson's $ρ$: 0.7609 and Spearman's $r_s$: 0.7089), the comparative learning model steadily improves with more data and approaches the regression baseline. In addition, a small-scale human evaluation study comparing absolute rating, pairwise comparison, and same-image comparison shows that comparative annotation yields faster results and has greater agreement among human annotators. These results suggest that comparative learning can effectively model human preferences while significantly reducing the cost of human annotations.

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