Difference between revisions of "Challenges in Engineering Self-Organizing Systems"
From Self-Organization Wiki
| Line 1: | Line 1: | ||
* '''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''? | ||
| − | ** Non-trivial but approaches exist. | + | ** Non-trivial but approaches exist (eg. evolutionary design). |
| + | ** 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 communication / interaction | + | * '''Design of the representation / communication / interaction''': |
** Degrees of freedom and adaptability | ** 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 (see [http://wwwu.uni-klu.ac.at/welmenre/papers/fehervari-2010-Evolving_Neural_Network_Controllers_for_a_Team_of_Self-organizing_Robots.pdf 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 [http://pespmc1.vub.ac.be/papers/Problem-Formulation.html 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? | * '''Simple versus chaotic behavior''': Can we describe the system state? | ||
| Line 17: | Line 20: | ||
** Rare events may lead to major global effects. | ** Rare events may lead to major global effects. | ||
** Repeatability of results | ** Repeatability of results | ||
| + | ** even simple deterministic systems can bear an interesting, unexpected (unwanted?) behavior, cf. [http://en.wikipedia.org/wiki/Langton%27s_ant '''Langton's Ant''']. | ||
* '''User aspects''' | * '''User aspects''' | ||
| Line 23: | Line 27: | ||
*** risks for users? | *** risks for users? | ||
| + | * '''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."'' | ||
Revision as of 22:08, 12 July 2010
- Design of emergence:
- How to design local rules achieving the desired global properties?
- Non-trivial but approaches exist (eg. evolutionary design).
- 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 (see 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."
