Yang, S., Xiong, Z., Yang, K., Cai, G., Li, Y., Jiang, P., Kun, G., Cai, Q., & Feng, L. (2026). SCA: Spatial Credit Assignment for Reinforcement Learning of GUI Agents. https://omanscience.com/ar/articles/sca-spatial-credit-assignment-for-reinforcement-learning-of-gui-agents