SciVer

ToolSciVer: Tool-augmented reinforcement learning for multimodal scientific claim verification

Researchers introduce ToolSciVer, a framework that equips vision-language models with three type-aware visual tools (table focus, chart-to-structure parsing, high-resolution zoom) to verify scientific claims grounded in figures, tables, and charts from papers. The policy is trained using Group Relative Policy Optimization (GRPO) with a composite reward covering correctness, format, tool-use efficiency, and validity. Experiments across five VLMs from three model families (Qwen, InternVL, Gemma) on SciVer and MuSciClaims benchmarks show improvements over prompting-based and RL-based baselines. The work is notable as the first tool-augmented framework specifically targeting multimodal scientific claim verification.