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This chapter starts with a discussion of how different aspects can be associated with the same entity and how this allows you to decompose a system in different ways. This leads to a consideration of the concept of multi-aspect which provides a uniform way to associate an unlimited number of related aspects with the same entity. Pruning a multi-aspect involves setting its multiplicity and restructuring it into an ordinary aspect with the specified number of components. We show how pruning of multi-aspects effectively open up a large space of simulation models with an unbounded variety of possibilities for coupling their components. Unfortunately, unless properly managed, this variety can also entail enormous amounts of detailed data entry which can be tedious and error prone. This leads to development of a uniform coupling rule which separates node-to-node network connectivity (specified by a directed graph) and port-to-port coupling which is forced to be uniform across all network connections. Some commonly employed schemes such as cyclic, cellular, and tree compositions have well defined digraphs with uniform couplings so they fit this mold.
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Hwang, M. H., & Zeigler, B. P. (2009). Reachability graph of finite & deterministic DEVS networks. IEEE Transactions on Automation Science and Engineering, 6(3), 454–476. CrossRef
Muzy, A., & Hu, X. (2008). Specification of dynamic structure cellular automata & agents. In Proc. of the 14th IEEE Mediterranean electrotechnical conference, MELECON2008 (pp. 240–246). CrossRef
Wainer, G., Liu, Q., Dalle, O., & Zeigler, B. P. (2010). Applying cellular automata and DEVS methodologies to digital games: a survey. Simulation & Gaming, 41(6), 796–823. CrossRef
Zeigler, B. P., & Hammonds, P. (2007). Modeling simulation-based data engineering: introducing pragmatics into ontologies for net-centric information exchange. Boston: Academic Press, 448 pages.
- Aspects and Multi-aspects
Bernard P. Zeigler
Hessam S. Sarjoughian
- Springer London