Learning to Credit the Right Steps: Objective-aware Process Optimization for Visual Generation

On September 7, 2026, the arXiv cs.CV preprint arXiv:2604.19234v3 proposed a new framework called Objective-aware Process Optimization for Visual Generation. This research addressed the optimization mismatch issue in visual generation tasks caused by coarse-grained allocation of reward signals in Group Relative Policy Optimization (GRPO), and designed a new solution. The core innovation lies in the introduction of the Objective-aware Trajectory Credit Assignment (OTCA) framework, which includes two key components: trajectory-level credit decomposition and multi-objective credit allocation. By jointly modeling credit signals at both temporal and objective levels, OTCA transforms a single static scalar reward into a time-aware system...