Avida

Avida It is a kind of. This software was developed for the purpose of studying computer programs (or evolving computer programs). Originally in 1993, .... Designed by Titus Brown et al., Now [__] is also located at Charles Oria's Digital Evolution Lab The development is continued. Avida was developed inspired by.

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Design principle

Tierra simulated evolutionary systems using computer resources, especially computer programs that scramble for access to CPU time and main memory. In this respect Tierra can be said to be similar, but there are differences in that the program executed during the simulation evolves by modifying itself. Tierra's program is.

On the other hand, in Avida, each digital creature lives in its own private memory protected from others, and it is executed by virtual dedicated to yourself. By default, digital organisms can not access the memory space of another digital creature, nor can they execute program code that does not exist in their own memory space. In Tierra, each life efficiently shared and scrambled a single "brain", but in Avida each digital creature has its own brain.

The second major difference between Avida and Tierra is that the execution speed of the virtual CPU is different for each digital organism. For example, a digital organism executes twice the number of instructions of another digital creature within the same time. The execution speed of the virtual CPU is determined by various factors, among which the most important elements are "tasks" processed by life. "Task" is a logical calculation result, whereby each digital organism is given extra CPU time in the form of a bonus.

At the research site

Adami and Oria worked together to study digital living things using Avida and some of their papers were posted in and . In 2003 _ Nature The article "The Evolutionary Origin of Complex Features (Evolutionary Origins of Higher Functions) "states that evolutionary mathematics can be represented with at least 19 simple but precisely defined instructions.

Related item

• • • (Originally it is a multipurpose simulation environment)

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reference

*,, February 2005.

External link

# # Academic publications on Avida

, C. Ofria, T. C. Collier, C. Adami (1999). Genomic Complexity, Robustness, and Genetic Interactions in Digital Organisms. _ Nature _ 400:661 - 664. * C. O. Wilke, J. L. Wang, C. Ofria, R. E. Lenski, and C. Adami (2001). Evolution of Digital Organisms at High Mutation Rate Leads To Survial of the Flattest. Nature 412:331 - 333. * R. E. Lenski, C. Ofria, R. T. Pennock, and C. Adami (2003). The Evolutionary Origin of Complex Features. Nature 423:139 - 145. * S. S. Chow, C. O. Wilke, C. Ofria, R. E. Lenski, and C. Adami (2004). Adaptive Radiation from Resource Competition in Digital Organisms. Science 305:**84 - 86.

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Post Date : 2018-03-01 06:00

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