near-decomposability

E267833

Near-decomposability is a systems theory concept describing complex systems that can be understood as loosely coupled subsystems whose internal interactions are much stronger than their interactions with other subsystems.

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near-decomposability canonical 1

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Predicate Object
instanceOf property of complex systems
systems theory concept
appliedTo biological systems
cognitive architectures
economic systems
multi-agent systems
organizational structures
software architectures
associatedWith Herbert Simon
surface form: Herbert A. Simon
assumes interaction strengths within subsystems are much greater than between subsystems
characterizes complex systems
contrastsWith fully coupled systems
enables hierarchical decomposition of systems
facilitates approximate analysis of global system behavior
local reasoning about subsystems
hasAlternativeLabel nearly decomposable system property
hasConsequence inter-subsystem interactions can often be treated as perturbations
system behavior can be approximated by analyzing subsystems separately
hasDefinition a property of complex systems in which subsystems are more strongly coupled internally than they are to other subsystems
hasKeyIdea long-run behavior of subsystems is influenced by weak interactions with other subsystems
short-run behavior of subsystems is largely independent of other subsystems
implies perturbations tend to remain localized within subsystems
systems can be modeled as loosely coupled subsystems
introducedInContextOf hierarchical systems
involves subsystems with strong internal interactions
subsystems with weak external interactions
originatesFrom work of Herbert A. Simon on complex systems
reduces analytical complexity of large systems
relatedConcept bounded rationality
hierarchical complexity
system modularity
relatesTo hierarchical organization
loose coupling
modularity
reliesOn time-scale separation between internal and external interactions
supports divide-and-conquer problem solving
modular analysis of systems
usedFor designing robust system architectures
explaining emergence of stable intermediate forms in evolution
simplifying mathematical models of complex systems
usedInField cognitive science
complexity science
computer science
ecology
economics
engineering
organizational theory
systems theory

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The Sciences of the Artificial notableConcept near-decomposability