Genotype Phenotype - Revision history

Mpoynton: /* Other Notes and Thoughts */

2007-06-08T04:32:17Z

Other Notes and Thoughts

← Older revision		Revision as of 04:32, 8 June 2007
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	= Other Notes and Thoughts =		= Other Notes and Thoughts =
	One of the most accepted views of "the firm" is Barney's (1991) [http://en.wikipedia.org/wiki/Resource-based_view Resource Based View of the Firm (RBV)] which postulates that firms can only achieve and sustain competitive advantage if they have superior resources (tangible and intangible) and a means of keeping other firms from copying them. This idea has been recently extended by the "dynamic capability perspective" that says the most successful firms are the ones that can most quickly adapt to their changing environment by adapting existing resources and acquiring new ones (this adaptability itself being a resource). This seems to fit very well into what is proposed above, strategies are secret and the ability to evolve better strategies (and manifest them in behaviors) is part of the genotype. We could add to the array of competing models mentioned above, one that incorporates a space featuring scarce resources, varying levels of resources or the need to have behaviors that successfully compete for resources.		One of the most accepted views of "the firm" is Barney's (1991) [http://en.wikipedia.org/wiki/Resource-based_view Resource Based View of the Firm (RBV)] which postulates that firms can only achieve and sustain competitive advantage if they have superior resources (tangible and intangible) and a means of keeping other firms from copying them. This idea has been recently extended by the "dynamic capability perspective" that says the most successful firms are the ones that can most quickly adapt to their changing environment by adapting existing resources and acquiring new ones (this adaptability itself being a resource). This seems to fit very well into what is proposed above, strategies are secret and the ability to evolve better strategies (and manifest them in behaviors) is part of the genotype. We could add to the array of competing models mentioned above, one that incorporates a space featuring scarce resources, varying levels of resources or the need to have behaviors that successfully compete for resources.

			(See web page for addition, 6/7/07, 10:31PM) Thanks, Mollie

	= Refs =		= Refs =
	# [[Media:204_Kra_evo.pdf\|Krakauer, D. Domains of Interaction in Evolution: Transmission, Construction and Selection 2004]]		# [[Media:204_Kra_evo.pdf\|Krakauer, D. Domains of Interaction in Evolution: Transmission, Construction and Selection 2004]]

Pauldwyer: /* Modeling Thoughts */

2007-06-08T00:55:32Z

Modeling Thoughts

← Older revision		Revision as of 00:55, 8 June 2007
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	Another possible model: instead of merely having genotype imitators, we could have three types of agents: (1) traditional genotype imitators, (2) phenotype imitators that copy behavior, (3) some combination of the two. Expected result?		Another possible model: instead of merely having genotype imitators, we could have three types of agents: (1) traditional genotype imitators, (2) phenotype imitators that copy behavior, (3) some combination of the two. Expected result?

			It would also be interesting to compare a model where survival from generation-to-generation follows the "random death of the unfit" paradigm rather than the usual strict propagation of the fittest mechanism.

	= Other Notes and Thoughts =		= Other Notes and Thoughts =

Pauldwyer: /* Other Notes and Thoughts */

2007-06-08T00:51:56Z

Other Notes and Thoughts

← Older revision		Revision as of 00:51, 8 June 2007
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	= Other Notes and Thoughts =		= Other Notes and Thoughts =
	One of the most accepted views of "the firm" is Barney's (1991) [http://en.wikipedia.org/wiki/Resource-based_view Resource Based View of the Firm (RBV)] which postulates that firms can only achieve and sustain competitive advantage if they have superior resources (tangible and intangible) and a means of keeping other firms from copying them. This idea has been recently extended by the "dynamic capability perspective" that says the most successful firms are the ones that can most quickly adapt to their changing environment by adapting existing resources and acquiring new ones (this adaptability itself being a resource). This seems to fit very well into what is proposed above, strategies are secret and the ability to evolve better strategies (and manifest them in behaviors) is part of the genotype.		One of the most accepted views of "the firm" is Barney's (1991) [http://en.wikipedia.org/wiki/Resource-based_view Resource Based View of the Firm (RBV)] which postulates that firms can only achieve and sustain competitive advantage if they have superior resources (tangible and intangible) and a means of keeping other firms from copying them. This idea has been recently extended by the "dynamic capability perspective" that says the most successful firms are the ones that can most quickly adapt to their changing environment by adapting existing resources and acquiring new ones (this adaptability itself being a resource). This seems to fit very well into what is proposed above, strategies are secret and the ability to evolve better strategies (and manifest them in behaviors) is part of the genotype. We could add to the array of competing models mentioned above, one that incorporates a space featuring scarce resources, varying levels of resources or the need to have behaviors that successfully compete for resources.

	= Refs =		= Refs =
	# [[Media:204_Kra_evo.pdf\|Krakauer, D. Domains of Interaction in Evolution: Transmission, Construction and Selection 2004]]		# [[Media:204_Kra_evo.pdf\|Krakauer, D. Domains of Interaction in Evolution: Transmission, Construction and Selection 2004]]

Pauldwyer at 12:33, 7 June 2007

2007-06-07T12:33:32Z

← Older revision		Revision as of 12:33, 7 June 2007
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	* [[Simon Angus]] (s.angus AT unsw.edu.au)		* [[Simon Angus]] (s.angus AT unsw.edu.au)
	* [[Mollie Poynton]] mollie.poynton@nurs.utah.edu		* [[Mollie Poynton]] mollie.poynton@nurs.utah.edu
	* [[Paul Dwyer]] pauldwyer@tamu.edu		* [[Paul Dwyer]] pauldwyer at tamu.edu
	* [[Alejandro Balbin]] (oabalbinr at unal.edu.co)		* [[Alejandro Balbin]] (oabalbinr at unal.edu.co)

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	= Modeling Thoughts =		= Modeling Thoughts =
	So we need to build a richer description of agents that are embodied in some way. Some have done this in the biological evolutionary literature by using external 'tagging' to indicate type characteristics, but these often have nothing to do with genotype, they are normally just ~~modelling~~ tools. (One could argue this for the firm model above -- that the firm loses a part of its 'body' is not coded for by strategy.) In economics, we need to ask what is a phenotype for a firm? What is it above and beyond its strategic decisions? Or for an individual, what determines its fitness/success, independent of its strategic play?		So we need to build a richer description of agents that are embodied in some way. Some have done this in the biological evolutionary literature by using external 'tagging' to indicate type characteristics, but these often have nothing to do with genotype, they are normally just modeling tools. (One could argue this for the firm model above -- that the firm loses a part of its 'body' is not coded for by strategy.) In economics, we need to ask what is a phenotype for a firm? What is it above and beyond its strategic decisions? Or for an individual, what determines its fitness/success, independent of its strategic play?

	This ties into ideas of ''levels of selection'' -- what we are really arguing is that strategies do not play strategies, but individuals who have a strategy play against other individuals with their own strategy. The battle is at the observable/phenotypic scale, not the strategic... or is it?		This ties into ideas of ''levels of selection'' -- what we are really arguing is that strategies do not play strategies, but individuals who have a strategy play against other individuals with their own strategy. The battle is at the observable/phenotypic scale, not the strategic... or is it?
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	= Other Notes and Thoughts =		= Other Notes and Thoughts =
	One of the most accepted views of "the firm" is Barney's (1991) [http://en.wikipedia.org/wiki/Resource-based_view Resource Based View of the Firm (RBV)] which postulates that firms can only achieve and sustain competitive advantage if they have superior resources (tangible and intangible) and a means of keeping other firms from copying them. This idea has been recently extended by the "dynamic capability perspective" that says the most successful firms are the ones that can most quickly adapt to their changing environment by adapting existing resources and acquiring new ones (this adaptability itself being a resource). ~~Could this be factored~~ into the ~~model above? Or~~ is ~~it already there?~~		One of the most accepted views of "the firm" is Barney's (1991) [http://en.wikipedia.org/wiki/Resource-based_view Resource Based View of the Firm (RBV)] which postulates that firms can only achieve and sustain competitive advantage if they have superior resources (tangible and intangible) and a means of keeping other firms from copying them. This idea has been recently extended by the "dynamic capability perspective" that says the most successful firms are the ones that can most quickly adapt to their changing environment by adapting existing resources and acquiring new ones (this adaptability itself being a resource). This seems to fit very well into what is proposed above, strategies are secret and the ability to evolve better strategies (and manifest them in behaviors) is part of the genotype.

	= Refs =		= Refs =
	# [[Media:204_Kra_evo.pdf\|Krakauer, D. Domains of Interaction in Evolution: Transmission, Construction and Selection 2004]]		# [[Media:204_Kra_evo.pdf\|Krakauer, D. Domains of Interaction in Evolution: Transmission, Construction and Selection 2004]]

Wbraynen: /* Criticism of current modeling dogma */

2007-06-06T15:40:30Z