SFB 559: Modelling of large logistics nets (1998 - 2008)
Project M1: Structured GNL-Models and efficient simulation
The special research area (Sonderforschungsbereich) SFB 559, as funded by the DFG, aims at providing adequate support for the planning, realisation and operations phases of large logistic networks (GNLs). In particular, model-based analysis is exploited for this purpose, with so called process chains forming the basic modelling paradigm. Sub-project M1 pursues the task of extending and formally defining this modelling paradigm such that performance measures (e. g. throughput, population) as well as economical and ecological measures become computable. In addition, aggregation and decomposition approaches are to be incorporated, mainly in order to improve the efficiency of simulative analyses.
Project M2: Efficient analysis methods
The special research area (Sonderforschungsbereich) SFB 559, as funded by the DFG, aims at providing adequate support for the planning, realisation and operations phases of large logistic networks (GNLs). In particular, model-based analysis is exploited for this purpose. In the Computer Science field, very efficient analysis techniques have been developed for specific modelling paradigms. These methods appear well applicable during the design phases of GNLs. The objective of this sub-project, M2, is to adopt and extend these analysis approaches for the particular application area. Techniques from queueing theory (e. g. product form algorithms and approximate derivatives), numerical techniques for the analysis of stochastic processes and recently developed forms of structured Markov chain analysis of hierarchical models will, amongst others, be evaluated, adapted and included.