An implementation of von Neumann's self-reproducing machine
Artificial Life
Self-Inspection Based Reproduction in Cellular Automata
Proceedings of the Third European Conference on Advances in Artificial Life
Theory of Self-Reproducing Automata
Theory of Self-Reproducing Automata
String Rewriting Grammar Optimized Using an Evolvability Measure
ECAL '01 Proceedings of the 6th European Conference on Advances in Artificial Life
Towards embedding evolution into a multi-agent environment
PRIMA'06 Proceedings of the 9th Pacific Rim international conference on Agent Computing and Multi-Agent Systems
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Von Neumann's architecture for self-reproducing, evolvable machines is described. Prom this starting point, a number of issues relating to self-reproduction and evolution are discussed. A summary is given of various arguments which have been put forward regarding the superiority of genetic reproduction over self-inspection methods. It is argued that programs in artificial life platforms such as Tierra reproduce genetically rather than by self-inspection (as has previously been claimed), However, the distinction is blurred because significant parts of the reproduction process in Tierran programs are impHcitly encoded in the Tierran operating system. The desirable features of a structure suitable for acting as a seed for an open-ended evolutionary process are discussed. It is found that the properties of such a structure aie somewhat different to those of programs in Tierra-like platforms. These analyses suggest ways in which the evolvability of individuals in artificial life platforms may be improved, and also point to a number of open questions.