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Genetic Algorithm building a little car

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Re: Genetic Algorithm building a little car

#31

Post by kirse »

nsrivast wrote: post #29
kirse wrote: post #28

Earlier quoted context omitted.

If the programmer specifies the boundaries (laws) of his own universe, then the evolutionary processes that happen within his own universe are not representative of the actual universe which he claims to be modeling. Why? 1) Current scientific claims express that the laws and boundaries of the universe came into existence without a designer. Having a designer anywhere in the equation is unacceptable, even one who sim…

The point of genetic algorithms is NOT to replicate evolution. Like you mention, evolution has no end goal whereas engineers usually have very explicit end goals. (Other problems include time constraints and computing power!) The point of genetic algorithms is to exploit the principle of natural selection under very specific constraints and explicitly constructed utility functions that are likely to lead to a better…

+1 Thanks for the explanation. I can fully understand both the legitimacy and the desire to model the specific process of genetic propagation, but was somewhat confused how exactly that logically validates it as an accurate representation of its function in evolution as a whole.

It's pretty clear one model has a designer and the other does not, and you certainly agree that the existence of a designer is more than just a small issue when dealing with the validity of evolutionary "models". =)

Re: Genetic Algorithm building a little car

#33

Post by swombat »

ivankirigin wrote: post #15
ivankirigin wrote: post #14

Earlier quoted context omitted.

One of the big 3 did build the smart car. Sorta. If you count Daimler AG ( previous owner of Chrysler, and current owner of Smart) as the maker. http://en.wikipedia.org/wiki/Chrysler_Group http://en.wikipedia.org/wiki/Daimler_AG http://en.wikipedia.org/wiki/Smart_(automobile) I'll take this opportunity to note that bailing out companies originally founded by Americans in such a globalized market is arbitrary and harm…

note to pg, these are valid URL characters: "()" I'm surprised you of all people aren't more partial to them

might wanna send him an email, to pg@...

Re: Genetic Algorithm building a little car

#34

Post by andyking »

friism wrote: post #23
bayleo wrote: post #13

Earlier quoted context omitted.

Due to the naïveté of the model I would say it's pretty unlikely that there are many different car-combinations with high fitness.

Has anyone bred one than gets past the dip after hill and doesn't somersault? The ones I have now seem to have optimum suspension for quickly motoring over the initial bumbs, but they all die in that damn ditch...

I think that ditch just coincides with a time limit of about ten seconds on most cars. I wonder how far they'd get if they weren't time-limited.

Re: Genetic Algorithm building a little car

#35

Post by bd »

ivankirigin wrote: post #15
ivankirigin wrote: post #14

Earlier quoted context omitted.

One of the big 3 did build the smart car. Sorta. If you count Daimler AG ( previous owner of Chrysler, and current owner of Smart) as the maker. http://en.wikipedia.org/wiki/Chrysler_Group http://en.wikipedia.org/wiki/Daimler_AG http://en.wikipedia.org/wiki/Smart_(automobile) I'll take this opportunity to note that bailing out companies originally founded by Americans in such a globalized market is arbitrary and harm…

note to pg, these are valid URL characters: "()" I'm surprised you of all people aren't more partial to them

It's possible to get around using escape sequences.

In Python:

  import urllib
  print urllib.quote("en.wikipedia.org/wiki/Smart_(automobile)")
It looks ugly, but it makes links clickable:

http://en.wikipedia.org/wiki/Smart_%28automobile%29

Re: Genetic Algorithm building a little car

#36

Post by erik »

friism wrote: post #23
bayleo wrote: post #13

Earlier quoted context omitted.

Due to the naïveté of the model I would say it's pretty unlikely that there are many different car-combinations with high fitness.

Has anyone bred one than gets past the dip after hill and doesn't somersault? The ones I have now seem to have optimum suspension for quickly motoring over the initial bumbs, but they all die in that damn ditch...

In the second tab I opened there is a car that makes it past the point that causes most cars to flip. The run currently times out at the top of the next hill, but the distance is still slowly improving.

Re: Genetic Algorithm building a little car

#37

Post by msg »

ivankirigin wrote: post #15
ivankirigin wrote: post #14

Earlier quoted context omitted.

One of the big 3 did build the smart car. Sorta. If you count Daimler AG ( previous owner of Chrysler, and current owner of Smart) as the maker. http://en.wikipedia.org/wiki/Chrysler_Group http://en.wikipedia.org/wiki/Daimler_AG http://en.wikipedia.org/wiki/Smart_(automobile) I'll take this opportunity to note that bailing out companies originally founded by Americans in such a globalized market is arbitrary and harm…

note to pg, these are valid URL characters: "()" I'm surprised you of all people aren't more partial to them

http://news.ycombinator.com/item?id=10889

When is a paren not a paren? When it's punctuation.

Re: Genetic Algorithm building a little car

#38

Post by anthonyb »

kirse wrote: post #24
andr wrote: post #5

Ok this is the second evolutionary computing post of today that does something cool with little or no explanation of what's going on. Stop teasing.

How exactly is it evolutionary computing when there is a designer in the equation (programmer) who puts constraints on the algorithm by the simple act of coding it and running it on systems that he designed? This seems more like "computing to model the process of genetic adaptation". You can't label it evolutionary when there's a designer in the equation. The very definition of the evolutionary process does not allow…

Do you think evolution really cares whether constraints are artificial or not?

Re: Genetic Algorithm building a little car

#39

Post by [deleted] »

kirse wrote: post #24
andr wrote: post #5

Ok this is the second evolutionary computing post of today that does something cool with little or no explanation of what's going on. Stop teasing.

How exactly is it evolutionary computing when there is a designer in the equation (programmer) who puts constraints on the algorithm by the simple act of coding it and running it on systems that he designed? This seems more like "computing to model the process of genetic adaptation". You can't label it evolutionary when there's a designer in the equation. The very definition of the evolutionary process does not allow…

[deleted]

Re: Genetic Algorithm building a little car

#40

Post by ivankirigin »

bd wrote: post #35
ivankirigin wrote: post #15

Earlier quoted context omitted.

note to pg, these are valid URL characters: "()" I'm surprised you of all people aren't more partial to them

It's possible to get around using escape sequences. In Python: import urllib print urllib.quote("en.wikipedia.org/wiki/Smart_(automobile)") It looks ugly, but it makes links clickable: http://en.wikipedia.org/wiki/Smart_%28automobile%29

The href can be that ugly link while the parens are still visible. The issue is when to parse the parens as part of the link.

Edit: but I guess you're saying I could do this to make it clickable. No thanks.

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