This book constitutes the refereed proceedings of the 10th International Conference on Computational Data and Social Networks, CSoNet 2021, which was held online during November 15-17, 2021. The conference was initially planned to take place in Montreal, Quebec, Canada, but changed to an online event due to the COVID-19 pandemic. The 24 full and 8 short papers included in this book were carefully reviewed and selected from 57 submissions. They were organized in topical sections as follows: Combinatorial optimization and learning; deep learning and applications to complex and social systems; measurements of insight from data; complex networks analytics; special track on fact-checking, fake news and malware detection in online social networks; and special track on information spread in social and data networks.

This book constitutes the refereed proceedings of the 11th International Conference on Networked Systems, NETYS 2023, held in Benguerir, Morocco, during May 22–24, 2023. The 9 full papers and 3 short papers presented were carefully reviewed and selected from 31 submissions. The scope of the conference covers all aspects related to the design and the development of these systems, including, e.g., cloud systems, formal verification, concurrent and distributed algorithms, data management, data science, parallel/concurrent/distributed programming, machine learning, multi-core architectures, networks, and security.