Hello, I stumbled upon this yesterday. It seems relevant to this thread.
*Flexible Muscle-Based Locomotion for Bipedal Creatures* [video] http://vimeo.com/79098420 [paper] http://www.cs.ubc.ca/~van/papers/2013-TOG-MuscleBasedBipeds/2013-TOG-MuscleBasedBipeds.pdf On Fri, Jan 10, 2014 at 12:41 AM, Robert Feldt <robert.fe...@gmail.com>wrote: > Thanks a lot for that link, Chris! > > In 1998 I used Genetic Programming to evolve controllers for an embedded > system (aircraft arrestment) and was using a simulator of the system for > the evolutionary searches. I also found several bugs in the simulator which > had already been in heavy use by engineers for several years. Unfortunately > I did not analyze these bugs in any detail in the paper and don't remember > all the details any longer: > > http://www.robertfeldt.net/publications/feldt_1998_diverse_sw_with_gp.html > > I have been getting back to search-based software testing recently and > during 2014 we will release automated testing tools (an extension of our > GödelTest approach: > http://www.robertfeldt.net/publications/feldt_2013_godeltest.html ) that > use different search approaches (some evolutionary, other deterministic) > to search for test data and test case for more standard software. > > Cheers, > > Robert > > > On Fri, Jan 10, 2014 at 12:51 AM, Chris Warburton < > chriswa...@googlemail.com> wrote: > >> It wasn't one of Sims', it's here >> http://www.youtube.com/watch?v=STkfUZtR-Vs >> According to the voiceover there's not as much variation allowed as I >> remember. Still amusing though :) >> >> >> On Thu, Jan 9, 2014 at 3:38 PM, Robert Feldt <robert.fe...@gmail.com>wrote: >> >>> I don't think I remember the "exploding myself" strategy from Karl Sims >>> videos: >>> >>> http://www.youtube.com/watch?v=JBgG_VSP7f8 >>> >>> Do you remember where you saw that, Chris? >>> >>> Cheers, >>> >>> Robert Feldt >>> >>> >>> On Thu, Jan 9, 2014 at 4:29 PM, Chris Warburton < >>> chriswa...@googlemail.com> wrote: >>> >>>> Pavel Bažant <pbaz...@gmail.com> writes: >>>> >>>> > I am developing an evolutionary simulation called Evoversum. An >>>> interesting >>>> > thing I noticed on multiple occasions while developing the program >>>> was the >>>> > fact that it tends to "debug itself". The simulated organisms, as a >>>> > consequence of the Darwinian evolution taking place, are very quick to >>>> > trigger all sorts of bugs, sometimes to their advantage, sometimes >>>> > triggering undefined behavior, destroying their own world. So it seems >>>> > likely that this effect is applicable in other software domains, too. >>>> >>>> Reminds me of a video I saw on YouTube (can't find it at the moment) >>>> where a genetic algorithm evolved creatures (collections of sticks, >>>> joints and motors) in a physics simulation. The goal was to move the >>>> furthest distance, in the hope that they'd walk/crawl/etc. In fact, one >>>> of them triggers a bug in the simulation which causes it to explode, >>>> sending its body parts flying in all directions. This immediately >>>> dominates the population, so all the creatures start exploding. >>>> >>>> I suppose the morals are: >>>> >>>> 1) Evolutionary methods are good at finding bugs >>>> 2) Your fitness function is not selecting for what you think it is ;) >>>> >>>> Cheers, >>>> Chris >>>> _______________________________________________ >>>> fonc mailing list >>>> fonc@vpri.org >>>> http://vpri.org/mailman/listinfo/fonc >>>> >>> >>> >>> >>> -- >>> Best regards, >>> >>> /Robert Feldt >>> -- >>> Tech. Dr. (PhD), Professor of Software Engineering >>> Blekinge Institute of Technology, Software Engineering Research Lab, and >>> Chalmers, Software Engineering Dept >>> Explanea.com - Igniting your Software innovation >>> robert.feldt (a) bth.se or robert.feldt (a) chalmers.se or >>> robert.feldt (a) gmail.com >>> Mobile phone: +46 (0) 733 580 580 >>> http://www.robertfeldt.net <http://www.cse.chalmers.se/~feldt> >>> >>> _______________________________________________ >>> fonc mailing list >>> fonc@vpri.org >>> http://vpri.org/mailman/listinfo/fonc >>> >>> >> >> _______________________________________________ >> fonc mailing list >> fonc@vpri.org >> http://vpri.org/mailman/listinfo/fonc >> >> > > > -- > Best regards, > > /Robert Feldt > -- > Tech. Dr. (PhD), Professor of Software Engineering > Blekinge Institute of Technology, Software Engineering Research Lab, and > Chalmers, Software Engineering Dept > Explanea.com - Igniting your Software innovation > robert.feldt (a) bth.se or robert.feldt (a) chalmers.se or > robert.feldt (a) gmail.com > Mobile phone: +46 (0) 733 580 580 > http://www.robertfeldt.net <http://www.cse.chalmers.se/~feldt> > > _______________________________________________ > fonc mailing list > fonc@vpri.org > http://vpri.org/mailman/listinfo/fonc > > -- Chris Bratlien I write code (so you don't have to) http://chrisbratlien.com | 1-979-229-5685 | skype: chrisbratlien
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