on viable service systems
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On Viable Service Systems: Developing a Modeling Framework for Analysis of Viability in Service Systems
Arash Golnam, Gil Regev and Alain Wegmann
IESS 1.1 Feb 16-18, 2011 Geneva
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Simplicity
Solvability
Idealism
Insolvability
Realism
Complexity
Real World of Problems
World of Models
Why Model? Communication
Analysis Synthesis
Simplification
Decision Making
Design
Optimization
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Organized Complexity
Disorganized Complexity
Organized Simplicity R
AN
DO
MN
ESS
COMPLEXITY
• Living, open systems with irreducible wholes • Wholes are more than sum of parts • High interdependence parts that can not be
treated in isolation • Properties of the system can not be inferred
from those of component sub-systems
Properties and Assumptions
What Models?
Problem Type
Wicked / ill Structured Methods of Inquiry
• Reasoning: Informal reasoning and judgment • Evidence: Intuitive perceived facts • Generalizations: Quasi laws • Models: Heuristic-based • Explanations: Perceived causal relationships • Predictions: Intuitive based on considerations
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Entities
Universe of Discourse
Reality
Modeler
Representation Domain
Modeling Constructs
How to Model?
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Universe of Discourse
• Services Industriels de Genève (SIG) • Viable Service System (VSS)
Universe of Discourse
Reality
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Conceptualizations
• Stafford Beer’s Viable System Model (VSM)
• General Systems Theory (GST)
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Conceptual Model
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Rep
rese
ntat
ion
Dom
ain
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Summary
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• An integration of generic systems thinking principles into discipline-specific methods.
• A methodology for business - IT alignment.
What is SEAM?
• Developed in LAMS, EPFL. • Applied for teaching and consulting since 2001 History
• General Systems Theory • Organizational cybernetics • RM-ODP (A software engineering ISO standard)
Foundations
• SEAM for Business • SEAM for Enterprise Architecture • SEAM for Software Engineering
Applications
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THANK YOU
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