Grasshopper

algorithmic modeling for Rhino

Hi All,

 

just put up a blog post that deals with one of the examples I show in lectures about Galapagos. The gh file is downloadable via the post.

 

http://ieatbugsforbreakfast.wordpress.com/2011/12/01/multiple-local...

 

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David Rutten

david@mcneel.com

Poprad, Slovakia

Views: 6495

Replies to This Discussion

been waiting for this, Thanks.

I was wondering, is there a way to collect all the "decent" local optima ? For example those with a fitness above a fixed value ?

At the moment, unless I missed something obvious, you can see these optima during the Galapagos process but when it stops you only have access to variations of global optimum right ?

There were a couple discussions on this...

Finches and Slingshot seem to be able to let you store genome varieties but you'll have to cull the data for your fitness threshold.

http://www.grasshopper3d.com/forum/topics/keep-last-galapagos-round...

http://www.grasshopper3d.com/forum/topics/grasshopper-solution-counter

Thanks for the links Taz.

Actually I think Nathan's Slingshot can do the sorting too.

Check out his blog:

http://nmillerarch.blogspot.com/2011/07/genome-database-using-sling...

However, there is a difference between keeping track of solutions (which are just temporary steps to find the absolute winner and tends to disappear during the evolution without being permitted to reach the local optimum near them) , and converging towards local optima.

Or perhaps playing with Maintain and Inbreeding ?

Although those good candidates can be used as seeds for researching optima I guess.

I suppose. The information is available in Galapagos, it's just impossible to save and navigate it at the moment. It's also not really obvious whether a group of nearby individuals are populating a single optimum or a collection of related optima.

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David Rutten

david@mcneel.com

Poprad, Slovakia

About Maintain and Inbreeding, would acting on those factors favor the preservation of local optima ? High Maintain and low Inbreeding?

I suppose that the research for the optimum would be compromised while maintaining diversity.

I will experiment.

Not really. A lower optimum will almost always go extinct very quickly if different genomes are on a higher peak. No matter the settings.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Thanks for share!

I can't visit the post...same reason as u can't visit facebook in china?!!

If the Chinese government is blocking the site then there's not much I can do.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

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