Comments on: Single Parent Ecosystem http://www.shiffman.net/2007/03/27/single-parent-ecosystem/ Tue, 06 Jan 2009 02:51:08 +0000 http://wordpress.org/?v=2.6 By: Irish Single Parents http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-65957 Irish Single Parents Mon, 23 Jul 2007 09:08:14 +0000 http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-65957 I have never felt comfortable with the surival of the fitess model, it is something that is repeated without thought. The reality is the long you live the chances for reproduction is higher. But factored into this longevity is the ability to surive, which indirectly factors in fitness. Mark <a href="http://www.singleparents.ie/" rel="nofollow">Irish single parents</a> I have never felt comfortable with the surival of the fitess model, it is something that is repeated without thought. The reality is the long you live the chances for reproduction is higher. But factored into this longevity is the ability to surive, which indirectly factors in fitness.

Mark

Irish single parents

]]> By: mangtronix http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-26300 mangtronix Sun, 08 Apr 2007 01:08:10 +0000 http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-26300 This is sweet. I like how it isn't a fitness function per se, but a survival function. I bet there are some bacteria that are almost as simple as this example. This paper is really interesting if you're into evolution. It comes out of a project where they have been studying e. coli evolution through 20,000 generations -- they're actually at 30,000 now but haven't gone through all the data :) http://myxo.css.msu.edu/lenski/pdf/2001, EcoAchievementChallenge, Lenski.pdf Starting on page 10 of the pdf is a fascinating look at how the bacteria evolve in response to predatory viruses and end up forming different kinds of ecosystems. Could make a good simulation :) This is sweet. I like how it isn’t a fitness function per se, but a survival function. I bet there are some bacteria that are almost as simple as this example.

This paper is really interesting if you’re into evolution. It comes out of a project where they have been studying e. coli evolution through 20,000 generations — they’re actually at 30,000 now but haven’t gone through all the data :)
http://myxo.css.msu.edu/lenski/pdf/2001, EcoAchievementChallenge, Lenski.pdf

Starting on page 10 of the pdf is a fascinating look at how the bacteria evolve in response to predatory viruses and end up forming different kinds of ecosystems. Could make a good simulation :)

]]> By: Daniel http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-24560 Daniel Mon, 02 Apr 2007 13:53:53 +0000 http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-24560 Thanks for the comments. Indeed, the system is not particularly advanced. The bloops only move randomly and happen upon food (and completely ignore / have no awareness of each other.) There is no will or desire to eat and live, it's simply an arbitrary fact of their lives. A more involved simulation would want to integrate some of the features you suggested. Thanks for the comments. Indeed, the system is not particularly advanced. The bloops only move randomly and happen upon food (and completely ignore / have no awareness of each other.) There is no will or desire to eat and live, it’s simply an arbitrary fact of their lives. A more involved simulation would want to integrate some of the features you suggested.

]]> By: Regina Mullen http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-23885 Regina Mullen Sun, 01 Apr 2007 01:49:11 +0000 http://www.shiffman.net/2007/03/27/single-parent-ecosystem/#comment-23885 A very interesting animation...I noticed a few things. 1) The "food" is larger than the smallest bloop. 2) The model seems to assume that bigger bloops don't consume the smaller bloops,--in other words that they choose their food. 3) It also assumes that food is both immobile and doesn't have the equivalent of a "come hither" look. In other words, it presumes that things like smell and mobility don't trigger a desire for proximity. But, if the purpose of movement is to find food, then the chance of finding food appears here totally disconnected from a "will" to survive or the ability to choose what is food and what isn't. Cool, and yes, people DO read your blog!! :o)) A very interesting animation…I noticed a few things.

1) The “food” is larger than the smallest bloop.

2) The model seems to assume that bigger bloops don’t consume the smaller bloops,–in other words that they choose their food.

3) It also assumes that food is both immobile and doesn’t have the equivalent of a “come hither” look. In other words, it presumes that things like smell and mobility don’t trigger a desire for proximity.

But, if the purpose of movement is to find food, then the chance of finding food appears here totally disconnected from a “will” to survive or the ability to choose what is food and what isn’t.

Cool, and yes, people DO read your blog!!

:o))

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