Jian Zhao 0018 Yue Zhang Xunhan Hu Weixun Wang Wengang Zhou Jianye Hao Jiangcheng Zhu Houqiang Li Revisiting QMIX: Discriminative Credit Assignment by Gradient Entropy Regularization. 2022 abs/2202.04427 CoRR https://arxiv.org/abs/2202.04427 db/journals/corr/corr2202.html#abs-2202-04427