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Macy, Michael - In: Journal of Artificial Societies and Social Simulation 1 (1998) 1, pp. 4-4

How does social order emerge among autonomous but interdependent agents? The expectation of future interaction may explain cooperation based on rational foresight, but the "shadow of the future" offers little leverage on the problem of social order in "everyday life" -- the habits of association...

Persistent link: https://www.econbiz.de/10005518524

Replication in the Deception and Convergence of Opinions Problem

Martins, André C. R. - In: Journal of Artificial Societies and Social Simulation 11 (2008) 4, pp. 8-8

honest and dishonest mistakes. We observe that, although replication does solve the problem of no convergence, under some …

Persistent link: https://www.econbiz.de/10005292614

Understanding Artificial Anasazi

Janssen, Marco A. - In: Journal of Artificial Societies and Social Simulation 12 (2009) 4, pp. 13-13

A replication and analysis of the Artificial Anasazi model is presented. It is shown that the success of replicating …

Persistent link: https://www.econbiz.de/10008461561

Resolving a Replication That Failed: News on the Macy & Sato Model

Will, Oliver - In: Journal of Artificial Societies and Social Simulation 12 (2009) 4, pp. 11-11

and Yoshimichi Sato published in PNAS. In answer to a failed replication, the authors provided the source code of their … replication based on the assumptions extracted from the source code is compared with the results published in Macy and Sato …'s original article. The replicated results are sufficiently similar to serve as a strong indicator that this new replication …

Persistent link: https://www.econbiz.de/10008461570

Open Access for Social Simulation

Polhill, J. Gary; Edmonds, Bruce - In: Journal of Artificial Societies and Social Simulation 10 (2007) 3, pp. 10-10

We consider here issues of open access to social simulations, with a particular focus on software licences, though also briefly discussing documentation and archiving. Without any specific software licence, the default arrangements are stipulated by the Berne Convention (for those countries...

Persistent link: https://www.econbiz.de/10005481565

Between Replication and Docking: "Adaptive Agents, Political Institutions, and Civic Traditions" Revisited

Miodownik, Dan; Cartrite, Britt; Bhavnani, Ravi - In: Journal of Artificial Societies and Social Simulation 13 (2010) 3, pp. 1-1

) to extend the original analysis, using a landscape of Italy that accounts for population density. The replication … distributions in our extension of the replication model increases distributional equivalence; (iii) using the weaker criteria of … relational alignment, both the replication model and its extension capture the basic relationship between institutional …

Persistent link: https://www.econbiz.de/10008520796

The Surprising Success of a Replication That Failed

Macy, Michael; Sato, Yoshimichi - In: Journal of Artificial Societies and Social Simulation 13 (2010) 2, pp. 9-9

In a recent paper (jasss.soc.surrey.ac.uk/12/4/11.html), Oliver Will contends that the effect of mobility on trust that we originally reported (2002) depends on \'an assumption that is most probably an unwilling, unintended, and unwanted implication of the code.\' When we experimented with...

Persistent link: https://www.econbiz.de/10008489024

Reinforcement Learning Dynamics in Social Dilemmas

Izquierdo, Segismundo S.; Izquierdo, Luis R.; Gotts, … - In: Journal of Artificial Societies and Social Simulation 11 (2008) 2, pp. 1-1

In this paper we replicate and advance Macy and Flache\'s (2002; Proc. Natl. Acad. Sci. USA, 99, 7229â€“7236) work on the dynamics of reinforcement learning in 2×2 (2-player 2-strategy) social dilemmas. In particular, we provide further insight into the solution concepts that they describe,...

Persistent link: https://www.econbiz.de/10004983474

Appearances Can Be Deceiving: Lessons Learned Re-Implementing Axelrod's 'Evolutionary Approach to Norms'

Galán, José Manuel; Izquierdo, Luis R. - In: Journal of Artificial Societies and Social Simulation 8 (2005) 3, pp. 2-2

In this paper we try to replicate the simulation results reported by Axelrod (1986) in an influential paper on the evolution of social norms. Our study shows that Axelrod's results are not as reliable as one would desire. We can obtain the opposite results by running the model for longer, by...

Persistent link: https://www.econbiz.de/10004983476

The Ghost in the Model (and Other Effects of Floating Point Arithmetic)

Polhill, J. Gary; Izquierdo, Luis R.; Gotts, Nicholas M. - In: Journal of Artificial Societies and Social Simulation 8 (2004) 1, pp. 5-5

mathematical descriptions of models in the literature are insufficient to enable exact replication of work since mathematically …

Persistent link: https://www.econbiz.de/10004983478