Communications of the ACM - Special issue on analysis and modeling in software development
Metagraphs: a tool for modeling decision support systems
Management Science
Metagraphs in hierarchical modeling
Management Science
A Formal Approach to Workflow Analysis
Information Systems Research
Metagraph Transformations and Workflow Management
HICSS '97 Proceedings of the 30th Hawaii International Conference on System Sciences: Information Systems Track—Internet and the Digital Economy - Volume 4
Enterprise Information Systems
Complex event processing in enterprise information systems based on RFID
Enterprise Information Systems
An approach to enterprise process dynamic modeling supporting enterprise process evolution
Information Systems Frontiers
Information Systems Frontiers
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Business processes and its related workflow systems have received greater interest in practice and research in the last decade. Many analytical methodologies for analysis and design of workflow systems emerged. A recent formal approach to study workflows using a graph-theoretic method called 'metagraphs' has demonstrated effectiveness for analysing connectivity and interactions of information and resources between workflow components. However, past works in analysis of metagraph are element-based. Since nodes in metagraphs represent either the input or output of an activity it is natural to process information contained in a node taken as a unit. This paper takes a node-centric view on metagraphs that is a major departure from the element-based approach today. The change in focus requires provisioning an analysis framework under the node-centric views. New basic constructs including, but not limited to, concepts such as: 'surplus sets', 'deficit sets', 'state of a path', and 'node-centric view of adjacency matrices' are introduced. The approach produces computational feasible systems for elements that are over supplied and/or under supplied from a source node to a target node of any path of the metagraph. Such information could be valuable for designing workflow systems. Also, the node-centric approach is shown to be an extension of the basic constructs of element-view metagraphs and is a complementary method for validating information requirements of workflow modelling. Illustrative examples are given.