This book constitutes the proceedings of the 17th International Conference on Risks and Security of Internet and Systems, CRiSIS 2022, which took place in Sousse, Tunesia, during December 7-9, 2022. The 14full papers and 4 short papers included in this volume were carefully reviewed and selected from 39 submissions. The papers detail security issues in internet-related applications, networks and systems.

This book constitutes the thoroughly refereed proceedings of the 2011 ICSOC Workshops consisting of 5 scientific satellite events, organized in 4 tracks: workshop track (WESOA 2011; NFPSLAM-SOC 2011), PhD symposium track, demonstration track, and industry track; held in conjunction with the 2011 International Conference on Service-Oriented Computing (ICSOC), in Paphos, Greece, December 2011. The 39 revised papers presented together with 2 introductory descriptions address topics such as software engineering services; the management of service level agreements; Web services and service composition; general or domain-specific challenges of service-oriented computing and its transition towards cloud computing; architecture and modeling of services; workflow management; performance analysis as well as crowdsourcing for improving service processes and for knowledge discovery.

This book constitutes the refereed proceedings of the 4th Mediterranean Conference on Pattern Recognition and Artificial Intelligence, MedPRAI 2020, held in Hammamet, Tunisia, in December 2020. Due to the COVID-19 pandemic the conference was held online. The 24 revised papers presented were thoroughly reviewed and selected from 72 submissions. The papers are covering the topics of recent advancements in different areas of pattern recognition and artificial intelligence, such as statistical, structural and syntactic pattern recognition, machine learning, data mining, neural networks, computer vision, multimedia systems, information retrieval, etc.

This open access book constitutes the refereed proceedings of the 18th International Conference on String Processing and Information Retrieval, ICOST 2020, held in Hammamet, Tunisia, in June 2020.* The 17 full papers and 23 short papers presented in this volume were carefully reviewed and selected from 49 submissions. They cover topics such as: IoT and AI solutions for e-health; biomedical and health informatics; behavior and activity monitoring; behavior and activity monitoring; and wellbeing technology. *This conference was held virtually due to the COVID-19 pandemic.