Preventive what-if analysis in symbiotic simulation

• Published in: 2008 Winter Simulation Conference pp. 750 - 758
• Main Authors: Aydt, Heiko, Turner, Stephen John, Wentong Cai, Low, Malcolm Yoke Hean, Lendermann, Peter, Boon Ping Gan, Ayani, Rassul
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-12-2008
• Subjects: Analytical models; Communications technology; Computational modeling; Computer simulation; Gallium nitride; Information analysis; Job shop scheduling; Semiconductor device manufacture; Symbiosis; Virtual manufacturing
• ISBN: 9781424427079; 142442707X
• ISSN: 0891-7736; 1558-4305
• DOI: 10.1109/WSC.2008.4736137

The what-if analysis process is essential in symbiotic simulation systems. It is responsible for creating a number of alternative what-if scenarios and evaluating their performance by means of simulation. Most applications use a reactive approach for triggering the what-if analysis process. In this paper we describe a preventive triggering approach which is based on the detection of a future critical condition in the forecast of a physical system. With decreasing probability of a critical condition, using preventive what-if analysis becomes undesirable. We introduce the notion of a G-value and explain how this metric can be used to decide whether or not to use preventive what-if analysis. In addition, we give an example for a possible application in semiconductor manufacturing.