With the growing interest in open source software in general and business process management and workflow systems in particular, it is worthwhile investigating the state of open source workflow management. The plethora of these offerings (recent surveys such as [4, 6], each contain more than 30 such systems) triggers the following two obvious questions: (1) how do these systems compare to each ...

Although Workflow Management Systems (WfMSs) are a key component in workflow technology, research work for assessing and comparing their performance is limited. This work proposes the first microbenchmark for WfMSs that can execute BPMN 2.0 workflows. To this end, we focus on studying the performance impact of well-known workflow patterns expressed in BPMN 2.0 with respect to three open source ...

Quality-of-Service (QoS) in Web services considers a service’s nonfunctional characteristics during service specification, discovery, and composition. In order to encourage the development of QoS-aware Web services, we first develop a QoS-aware model, which contains a common set of QoS attributes including response time, throughput, reliability, availability and price etc. Then, based on the at...

Dependencies among software artifacts are very useful for various software development and maintenance activities such as change impact analysis and effort estimation. In the past, the focus on artifact dependencies has been at the design and code level rather than at the requirements level. This is due to the difficulties in identifying dependencies in a text-based requirements specification. ...

Current research on business process management (BPM) outlines the importance of business process reengineering and its role in improving business process. As well, requirements on context-awareness go forward including BPM in many research areas. That is why, in this paper, we introduce a methodology for BPR consisting on: (i) using the process context in order to discover the process nature, ...

Cook and Misra’s Orc is an elegant language for orchestrating distributed services, able to cover e.g. van der Aalst’s workflow patterns. We aim to understand the key novel features of Orc by comparing it with variations of Petri nets. The comparison shows that Orc hides powerful mechanisms for name handling (creation and passing) and for atomic distributed termination. Petri nets with static t...

Increasing the flexibility from a user-perspective and enabling a workflow based interaction, facilitates an easy user-friendly utilization of EHRs for healthcare professionals' daily work. To offer such versatile EHR-functionality, our approach is based on the execution of clinical workflows by means of a composition of semantic web-services. The backbone of such architecture is an ontology wh...

This paper describes the implementation of a system supporting YAWL (Yet Another Workflow Language). YAWL is based on a rigorous analysis of existing workflow management systems and related standards using a comprehensive set of workflow patterns. This analysis shows that contemporary workflow systems, relevant standards (e.g. XPDL, BPML, BPEL4WS), and theoretical models such as Petri nets have...

Workflow management systems (WfMS) should address the needs of rapidly changing business environments We have built a multi-agent based framework, JBees, which addresses these needs. We evaluate our agent based workflow system modelled using Petri nets with the proposed standards for various workflow patterns and communication patterns. The coloured Petri net model supports the workflow pattern...

Internet-based technology, E-commerce, and the rise of networked virtual enterprises have fueled the need for inter-organizational workflows. Although XML allows trading partners to exchange information, it cannot be used to coordinate activities in different organizational entities. Therefore, we developed a workflow language named XRL (eXchangeable Routing Language) for supporting crossorgani...