On viable service systems

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On viable service systems

  1. 1. IESS 1.1 Feb 16-18, 2011 GenevaOn Viable Service Systems: Developing aModeling Framework for Analysis of Viabilityin Service Systems Arash Golnam, Gil Regev and Alain Wegmann
  2. 2. Why Model? CommunicationSimplification Real World World of of Problems Models Idealism Design Decision Realism Making Complexity Simplicity Insolvability Solvability Optimization Analysis Synthesis 2  
  3. 3. What Models? Disorganized Complexity •  Living, open systems with irreducible wholesRANDOMNESS •  Wholes are more than sum of parts Organized Properties and •  High interdependence parts that can not be Complexity Assumptions treated in isolation Organized •  Properties of the system can not be inferred Simplicity from those of component sub-systems Problem Type COMPLEXITY •  Reasoning: Informal reasoning and judgment •  Evidence: Intuitive perceived facts •  Generalizations: Quasi laws Methods of Wicked / ill Structured •  Models: Heuristic-based Inquiry •  Explanations: Perceived causal relationships •  Predictions: Intuitive based on considerations 3  
  4. 4. How to Model? ModelerRepresentation Domain Reality Universe of Discourse Modeling Constructs Entities 4  
  5. 5. RealityUniverse of Discourse Universe of Discourse•  Services Industriels de Genève (SIG)•  Viable Service System (VSS) 5  
  6. 6. Conceptualizations •  General Systems Theory (GST) •  Stafford Beer’s Viable System Model (VSM) 6  
  7. 7. Conceptual Model 7  
  8. 8. Representation Domain8  
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  15. 15. Summary 15  
  16. 16. •  An integration of generic systems thinking principles into What is discipline-specific methods. SEAM? •  A methodology for business - IT alignment. •  Developed in LAMS, EPFL. History •  Applied for teaching and consulting since 2001 •  General Systems TheoryFoundations •  Organizational cybernetics •  RM-ODP (A software engineering ISO standard) •  SEAM for BusinessApplications •  SEAM for Enterprise Architecture •  SEAM for Software Engineering 16  
  17. 17. THANK YOU 17  

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