The is-a relationship among actors has been introduced since the very beginning of i*. However, the effect of this construct at the level of intentional elements and dependencies is not always clear. In this paper, we ...

Services as part of our daily life represent an important means to deliver value to their consumers and have a great economic impact for organizations. The service consumption and their exponential proliferation show the ...

The growing of Internet of Things (IoT) driven with rapid advances in Artificial Intelligence (AI) with special emphasis in Machine Learning (ML) techniques herald a new era of software systems. As we enter this new era ...

Context: Quality of Service (QoS) is a major issue in various web service related activities. Quality models have been proposed as the engineering artefact to provide a common framework of understanding for QoS, by defining ...

Component-based software development heavily relies on the ability of reusing components from a library with as little effort as possible. Among others, valuable features for reusing from a component library are: adaptability ...

Multi-Stakeholder Distributed Systems (MSDS) are distributed systems in which subsets of the nodes are designed, owned, or operated by distinct stakeholders. New computing paradigms such as service-oriented computing mean ...

Collaborative software development experience in recent years proves that the management of large sets of requirements has become a critical issue. Among the main problems of requirements engineering, the detection and ...

Runtime uncertainty such as unpredictable resource unavailability, changing environmental conditions and user needs, as well as system intrusions or faults represents one of the main current challenges of self-adaptive ...