Guest editorial: special issue on performance analysis and optimization of discrete event systems
Discrete event dynamic systems
It is an established tradition of the Journal of Discrete Event Dynamic Systems (J-DEDS) to publish every two years a special issue devoted to advances in the area of Discrete Event Systems (DES). For this issue, which was announced in 2016, we selected two broad topics that are central within our research community, namely performance analysis and optimization and diagnosis, opacity and supervisory control. New original contributions in these two areas have recently appeared and it was our
... to take stock of the state of the art and explore new research directions that may be fruitfully pursued over the next several years. After consultation with colleagues following the last International Workshop on DES (WODES 2016, May 2016 in Xian, China), we invited seventeen groups of authors to submit papers for these two special issues. These papers were reviewed according to the normal review process of J-DEDS. The first of the two special issues, entitled "Performance Analysis and Optimization of Discrete Event Systems," contains six papers covering recent developments in discrete-eventbased methodologies for Markov chains and Markov decision processes, simulation-based optimization and new approaches for the performance regulation of DES. A brief description of each paper in this special issue follows. The first paper in the issue, "Ranking nodes in general networks: a Markov multi-chain approach" by Berkhout and Heidergott, develops a new Markov chain-based methodology for a meaningful ranking of nodes in a network which enhances Google's well-established PageRank algorithm. Discrete Event Dyn Syst (2018) 28:1-2 https://doi.