Re: Possible bug regarding Zoom feature in Breve 2.1b Swarm models

On Jan 19, 2005, at 10:39 AM, jon klein wrote:

>> Also, the new SwarmEvolve seems to run considerably slower than the 
>> old
>> swarmevolve-1.0.tz.    thanks for an increasingly impressive project!
>
> Unfortunately, this is also the correct behavior.  A bug in the Push
> language implementation used in breve 2.0 prevented some (in fact, 
> many)
> callback instructions from being run.  The result was faster 
> simulation,
> but potentially incorrect behaviors!

Whoops, I misread the original message here, sorry!

swarmevolve-1.0 and the SwarmEvolve distributed with breve 2.x
("SwarmEvolve 2.0") are actually different simulations.

SwarmEvolve 1.0 used a genetic algorithm to evolve parameters for a
hardcoded motion equation, while SwarmEvolve 2.0 uses genetic 
programming
with the Push programming language.  SwarmEvolve 2.0 (with or without
the bug I mentioned above) is in fact much slower than SwarmEvolve 1.0
due to the more open-ended behaviors.

Sorry for the confusion.  I'll add SwarmEvolve-1.0 as a demo as well.

- jon klein 

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