PlotGround: Grounding Plot Digitization in Real Scientific Figures and Their Source Data

Yaohui Zhang, Binxu Li, Haoyi Duan, Jiacheng Miao, Yixin Wang et al.|October 5, 2026arXiv

Key Takeaway

Current multimodal models can approximate values from scientific figures but struggle with precision; providing source data instead of figures dramatically improves accuracy (90% to 97.4%) while reducing computational cost, suggesting a practical path for scientific data extraction.

Summary

PlotGround is a benchmark for evaluating how well AI models can extract numerical values from scientific figures.

evaluation multimodal data

Key Terms

plot-digitization multimodal-models source-grounding relative-error-tolerance