Chart-R1: Chain-of-Thought Supervision and Reinforcement for Advanced Chart Reasoner

ArXi:2507.15509v3 Announce Type: replace Chart reasoning presents unique challenges due to its inherent complexity -- requiring precise numerical comprehension, multi-level visual understanding, and logical inference across interconnected data elements. Existing vision-language models often struggle with such reasoning tasks, particularly when handling multi-subchart scenarios and numerical sensitivity. To address these challenges, we