Aleksander J. Kavs

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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)
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)
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)
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)
Identifying business components is the basis of component-based software engineering. Many approaches, including cluster analysis and concept analysis, have been proposed to identify components from business models. These approaches classify business elements into a set of components by analyzing their properties. However, most of them do not consider the(More)
Model Driven Architecture (MDA) methodology is considered as the next generation development methodology and approach though it is not applied widely in software enterprise yet. In order to testify the efficiency of MDA methodology in the real software project environment, we conducted a comparison experiment in developing a prototype for a community(More)
Satisfying quality requirements for service systems is quite crucial and challenging. However, there is a gap between quality requirements analysis and quality requirements design in service systems. In order to bridge this gap, we provide a systematic approach ProQRASS to model and analyze quality requirements of services based on business processes, which(More)