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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

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

A Semantic Grid Service for Experimentation with an Agent-Based Model of Land-Use Change

Polhill, J. Gary; Pignotti, Edoardo; Gotts, Nicholas M.; … - In: Journal of Artificial Societies and Social Simulation 10 (2007) 2, pp. 2-2

Agent-based models, perhaps more than other models, feature large numbers of parameters and potentially generate vast quantities of results data. This paper shows through the FEARLUS-G project (an ESRC e-Social Science Initiative Pilot Demonstrator Project) how deploying an agent-based model on...

Persistent link: https://www.econbiz.de/10004983489

Towards a Community Framework for Agent-Based Modelling

Janssen, Marco A.; Alessa, Lilian N.; Barton, Michael; … - In: Journal of Artificial Societies and Social Simulation 11 (2008) 2, pp. 6-6

Agent-based modelling has become an increasingly important tool for scholars studying social and social-ecological systems, but there are no community standards on describing, implementing, testing and teaching these tools. This paper reports on the establishment of the Open Agent-Based...

Persistent link: https://www.econbiz.de/10004983509

A Replication That Failed - on the Computational Model in 'Michael W. Macy and Yoshimichi Sato: Trust, Cooperation and Market Formation in the U.S. and Japan. Proceedings of the Na...

Will, Oliver; Hegselmann, Rainer - In: Journal of Artificial Societies and Social Simulation 11 (2008) 3, pp. 3-3

The article describes how and why we failed to replicate main effects of a computational model that Michael Macy and Yoshimichi Sato published in the Proceedings of the National Academy of Sciences (May 2002). The model is meant to answer a fundamental question about social life: Why, when and...

Persistent link: https://www.econbiz.de/10004983510