Difference between revisions of "Challenges in Engineering Self-Organizing Systems"
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* '''Design of emergence''': | * '''Design of emergence''': | ||
** How to design ''local rules'' achieving the desired ''global properties''? | ** How to design ''local rules'' achieving the desired ''global properties''? | ||
| − | ** How to couple local (unit) behaviors to global ( | + | ** How to couple local (unit) behaviors to global (system) behavior? |
** Non-trivial but approaches exist (eg. evolutionary design), Bio-inspired techniques (stigmergy, social insects metaphors, immune systems, evolutionary algorithms), these approaches perform well in some specific domains (dynamic networks : routing, P2P, ..) | ** Non-trivial but approaches exist (eg. evolutionary design), Bio-inspired techniques (stigmergy, social insects metaphors, immune systems, evolutionary algorithms), these approaches perform well in some specific domains (dynamic networks : routing, P2P, ..) | ||
** Definition of fitness function (designer needs to provide intermediate goals first (eg. subgoals like ball handling in a soccer simulation), but overall system can later revise/remove those intermediate steps (only winning the game counts)) | ** Definition of fitness function (designer needs to provide intermediate goals first (eg. subgoals like ball handling in a soccer simulation), but overall system can later revise/remove those intermediate steps (only winning the game counts)) | ||
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* '''Reliability and trust''' (this point is somehow connected to the aboce two points on testing and user aspects) | * '''Reliability and trust''' (this point is somehow connected to the aboce two points on testing and user aspects) | ||
** ''"Hey, look, I have just evolved a complex control algorithm for the cooling system of the reactor."'' | ** ''"Hey, look, I have just evolved a complex control algorithm for the cooling system of the reactor."'' | ||
| + | |||
| + | * '''(Unified?/complete) Theory of Self-organizing systems''' | ||
| + | ** Standards of System Theory? : General Control Theory | ||
| + | ** Deterministic, non linear dynamic systems (Chaos Theory) | ||
| + | ** Cellular Automata? | ||
| + | ** Conceptual/philosophical : Autopeïsis & Enaction Theory (Maturana & Varela) ⇒ Structural/ Behavioural Coupling | ||
| + | ** Complexity Theory and Complex Networks Theory | ||
Latest revision as of 09:14, 14 July 2010
- Design of emergence:
- How to design local rules achieving the desired global properties?
- How to couple local (unit) behaviors to global (system) behavior?
- Non-trivial but approaches exist (eg. evolutionary design), Bio-inspired techniques (stigmergy, social insects metaphors, immune systems, evolutionary algorithms), these approaches perform well in some specific domains (dynamic networks : routing, P2P, ..)
- Definition of fitness function (designer needs to provide intermediate goals first (eg. subgoals like ball handling in a soccer simulation), but overall system can later revise/remove those intermediate steps (only winning the game counts))
- Design of the representation / communication / interaction:
- Degrees of freedom and adaptability
- How to represent/set up the problem (cartesian vs. polar spatial coordinates in the sensor protocol made a difference in evolving a control system: I. Fehervari and W. Elmenreich. Evolving neural network controllers for a team of self-organizing robots. Journal of Robotics, 2010.)
- The representation of a problem is very important (see Heylighen F. (1988): Formulating the Problem of Problem-Formulation, in: Cybernetics and Systems '88, Trappl R. (ed.), (Kluwer Academic Publishers, Dordrecht), p. 949-957.)
- Simple versus chaotic behavior: Can we describe the system state?
- The state of some self-organizing systems can be easily modeled (firefly sync)
- The state of other self-organizing systems cannot be modeled, they exhibit chaotic behavior, which makes it impossible to predict future states.
- Robustness issues
- Malicious nodes, faults, defects
- Testing:
- It can be very difficult to test a proposed self-organizing system with respect to a given goal (many entities, large operational range, chaotic behavior)
- Rare events may lead to major global effects.
- Repeatability of results
- even simple deterministic systems can bear an interesting, unexpected (unwanted?) behavior, cf. Langton's Ant.
- User aspects
- To what extend can today’s systems be replaced or complemented by self-organizing systems, taking into account
- constraints and acceptance of the technology and
- risks for users?
- To what extend can today’s systems be replaced or complemented by self-organizing systems, taking into account
- Reliability and trust (this point is somehow connected to the aboce two points on testing and user aspects)
- "Hey, look, I have just evolved a complex control algorithm for the cooling system of the reactor."
- (Unified?/complete) Theory of Self-organizing systems
- Standards of System Theory? : General Control Theory
- Deterministic, non linear dynamic systems (Chaos Theory)
- Cellular Automata?
- Conceptual/philosophical : Autopeïsis & Enaction Theory (Maturana & Varela) ⇒ Structural/ Behavioural Coupling
- Complexity Theory and Complex Networks Theory
