R. Riolo, The Effects of Tag-Mediated Selection of Partners in Evolving Populations Playing the Iterated Prisoner's Dilemma, Working Paper,Santa Fe Institute 97-02-016, 1997. Home/Search Document Details and Download
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Emergence of Kin Habitats and Cooperation in Multi-Agent Environments - Oh (Correct)
....interactions among non kin; it also helps to establish habitats that are composed of kin. These habitats are resistant to invasion of enemies that is, of non kin. We study the hypothesis with the Iterated Prisoner s Dilemma (IPD) game [1] At least two models of the IPD game, the tag based [6] model and the space based [5] model, use the idea of kin preference, but both interpret their experiment results in entirely different manners from each other; and neither of the papers uses the idea of kin preference in analyzing the results. We consider these two seemingly different research ....
....idea of kin preference in analyzing the results. We consider these two seemingly different research efforts with a common perspective the kinship perspective. We present a new model of cooperation in the IPD game that uses the kinship bias in a more precise way. Previous IPD research such as [6] and [5] use only one parent in producing offspring; however, in the new model, two parents are used. 1 This sexual reproduction, contrasting with the single parent methods of the earlier models, creates several complications that will be discussed later. This paper is organized as follows. ....
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Rick L. Riolo. The effects of tag-mediated selection of partners in evolving populations playing the iterated prisoner's dilemma. Working Paper 97-02-016, Santa Fe Institute, 1997.
Selfish Memes & Selfless Agents - Altruism in the Swap Shop - Hales (1998) (1 citation) (Correct)
....emergence of specialisation within and between groups. Also, a relaxation of the cultural closeness metric allowing for a more realistic case of hidden memes will be explored. This line of enquiry offers the potential to forge links with work already done using tags or labels (Holland 1993, Riolo 1997) and richer models of social selection (Simon 1990) ....
Riolo R. (1997), "The Effects of Tag-Mediated Selection of Partners in Evolving Populations Playing the Iterated Prisoner's Dilemma." Santa Fe Institute Working Paper 97-02-016.
Stereotyping, Groups and Cultural Evolution: A Case of "Second.. - Hales (Correct)
....attributes with agents based purely on observable characteristics (labels or tags) I exclude assumed, deduced, believed or relative characteristics. The role of tags as methods of increasing co operation in iterated co operation games has been discussed by Holland [18] and more recently in [28]. I start from the assumption that stereotypes are constructed maintained and evolved through individual agent interactions over time. Also that different agents may posses different (even conflicting) stereotypes and that the processes that generate them are due to the need for cognitive ....
....the structural differences from which stereotypes may be generated may themselves be the result of processes involving stereotyping (among other cognitive and social processes) and hence are reflexively related. Labels or tags are defined as observable attributes attached to agents [1] 18] [28]. In a binary string representation of a tag, each bit can be interpreted as representing the presence or absence of some observable characteristic. The definition of labels used by Holland [18] specifies that they are fixed and unchanging intra generationally but evolve inter generationally. The ....
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Riolo, R.: The Effects of Tag-Mediated Selection of Partners in Evolving Populations Playing the Iterated Prisoner's Dilemma. Santa Fe Institute Working Paper 97-02-016. Santa Fe, NM (1997)
The Effects and Evolution of Tag-Mediated Selection of Partners in .. - Riolo (1997) (1 citation) Self-citation (Riolo) (Correct)
....the prisoner s dilemma at all (Rytina, personal communication) payoff R = 5; if both defect, they each get payoff P = 1; if A defects and B cooperates, A gets payoff T = 5 and B gets S = 1. This rest of this section briefly describes the model in more detail. For a complete description, see [Riolo, 1997a] 2.1 INDIVIDUALS, STRATEGIES and GAMES Each individual consists of five genes, i, p, q, T, B) three to specify the individual s strategy for playing the IPD, one gene for use as a tag, and one for use as a tag use bias gene. All genes are represented as real numbers. The strategy genes ....
....(4) per IPD game in order to show that using tags to select partners can lead to cooperation in conditions that make it fairly difficult for cooperation to emerge in agents who select partners at random. The conditions under which use of tags leads to increased cooperation are fairly broad: see [Riolo, 1997a] for more extensive experiments on the emergence of cooperation under a variety of conditions. 2Since strategies are restricted to the simple memoryI (i,p,q) type, individuals cannot make use of knowledge of the fixed number of moves, so they don t degenerate into always defecting (because of a ....
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Riolo, R. L. "The Effects of Tag Me- diated Selection of Partners in Evolving Populations Playing the Prisoner's Dilemma." Santa Fe Institute Working Paper 97-02-016. Santa Fe, NM.
The Emergence of Cooperation among Agents using Simple.. - Enda Howley National (Correct)
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R. Riolo, The Effects of Tag-Mediated Selection of Partners in Evolving Populations Playing the Iterated Prisoner's Dilemma, Working Paper,Santa Fe Institute 97-02-016, 1997.
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