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       avida - Auto-adaptive genetic system for Artificial Life research




       This  is  the  graphical  viewer  for  the  Avida auto-adaptive genetic

       The Avida system is based on concepts similar to those employed by  the
       tierra  program  developed by Tom Ray. In lay terms, Avida is a digital
       world in  which  simple  computer  programs  mutate  and  evolve.  More
       technically,  it  is  a  population  of self-reproducing strings with a
       Turing-complete genetic basis subjected  to  Poisson-random  mutations.
       The  population  adapts  to  the  combination  of  an intrinsic fitness
       landscape (self-reproduction) and  an  externally  imposed  (extrinsic)
       fitness function provided by the researcher.

       By  studying  this  system,  one  can  examine evolutionary adaptation,
       general traits of living systems (such as self-organization), and other
       issues  pertaining  to  theoretical or evolutionary biology and dynamic
       systems. The power of Avida is that it gives us a controllable  digital
       system  in  which to study the theories of evolutionary biology. Often,
       we can study elements of evolutionary  theory  that  are  difficult  or
       impossible in biological systems.


       Make  a  new  working directory for the experiment you want to run, and
       put the starting data in it. You can copy standard  starting  data  and
       modify it with:

       cp /usr/share/avida/* . -r

       You  can  run  the  program  from inside that directory, or select your
       working directory once started.


       Avida is a joint project of the  Digital  Life  Laboratory,  headed  by
       Chris    Adami,    at    the   California   Institute   of   Technology
       ( and Richard  Lenski’s  Microbial  Evolution
       laboratory  at Michigan State university (
       For more info on these groups or their research, please visit the links

       This manual page was written by Miriam Ruiz <>, for
       the Debian project (but may be used by others).


       There is a directory with some starting data you can use as a base  for
       your research in /usr/share/doc/alive/data/.  You just have to copy the
       contents  of  that  directory  wherever  you  want  and  start  running
       avida-viewer  there.   You  can  find HTML documentation about avida in

                              noviembre 23, 2004                      AVIDA(1)