Aleksander J. Kavs

Learn More
Non-functional requirements (NFRs) are often regarded as the key success factor in building high quality software. However, most of the requirements elicitation methods are centered on discovering functional requirements only. This paper presents a novel NFRs elicitation approach aiming at empowering requirements analysts with a knowledge repository that(More)
—Existing methods for QoS-aware services composition only consider web services whose service class is specified in the process definition as the candidate. However, there may exist some services that could also accomplish partial goal of the web service composition but their service classes do not appear in the process definition. In this paper, we propose(More)
Reliability is one of the most important quality dimensions for web services. Current reliability models for composite web service assume the statistical independence of its component web services, which is often not the case. In this paper, we research on the reliability correlation of component web services by identifying common-cause failures (CCF) and(More)
In this paper, a bottom-up architecture-based reliability estimation framework for component based software systems is presented. The approach takes the component composition mechanisms and the utilization frequency of each component into account, and it is general for different architecture styles. We first propose five basic component composition(More)