Machine Heart

Sep 25, 2026 · Artificial Intelligence

V-Rubrics: 350K Fine-Grained Rubrics Fix Credit Assignment in Multimodal RL

V-Rubrics decomposes 50,248 visual samples into 352,938 atomic rubrics across visual faithfulness, reasoning consistency, and instruction following, enabling fine-grained credit assignment in GRPO training that lifts Overall Avg. to 68.04 on general benchmarks and 62.45 on visual math and logic tasks.