1. Bein, B.: Entropy. Best Pract. Res. Clin. Anaesthesiol. 20(1), 101–109 (2006)
2. Briggs, C., Fan, Z., Andras, P.: Federated learning with hierarchical clustering of local updates to improve training on non-IID data. In: 2020 International Joint Conference on Neural Networks (IJCNN), pp. 1–9. IEEE (2020)
3. Eichner, H., Koren, T., McMahan, B., Srebro, N., Talwar, K.: Semi-cyclic stochastic gradient descent. In: International Conference on Machine Learning, pp. 1764–1773. PMLR (2019)
4. Ghosh, A., Chung, J., Yin, D., Ramchandran, K.: An efficient framework for clustered federated learning. Adv. Neural. Inf. Process. Syst. 33, 19586–19597 (2020)
5. Ghosh, A., Hong, J., Yin, D., Ramchandran, K.: Robust federated learning in a heterogeneous environment. arXiv preprint arXiv:1906.06629 (2019)