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16 results

The co-evolution of social institutions, demography, and large-scale human cooperation

Journal Article
Powers, S. T., & Lehmann, L. (2013)
The co-evolution of social institutions, demography, and large-scale human cooperation. Ecology Letters, 16(11), 1356-1364. https://doi.org/10.1111/ele.12178
Human cooperation is typically coordinated by institutions, which determine the outcome structure of the social interactions individuals engage in. Explaining the Neolithic tr...

Punishment can promote defection in group-structured populations

Journal Article
Powers, S. T., Taylor, D. J., & Bryson, J. J. (2012)
Punishment can promote defection in group-structured populations. Journal of Theoretical Biology, 311, 107-116. https://doi.org/10.1016/j.jtbi.2012.07.010
Pro-social punishment, whereby cooperators punish defectors, is often suggested as a mechanism that maintains cooperation in large human groups. Importantly, models that suppo...

Instant messaging: using log files to identify patterns of interaction in group of teenage users.

Conference Proceeding
Davison, B., & Buckner, K. (2005)
Instant messaging: using log files to identify patterns of interaction in group of teenage users. In A. Sloane (Ed.), Home-oriented informatics and telematics : proceedings of the IFIP WG 9.3 HOIT2005 conference, 277 - 290. https://doi.org/10.1007/11402985_20
This paper presents preliminary findings on teenagers’ use of instant messaging (IM) as an example of an Internet technology. The results are quantitative, being drawn from th...

Higher-order statistics-based nonlinear speech analysis

Journal Article
Soraghan, J. J., Hussain, A., Alkulabi, A., & Durrani, T. (2002)
Higher-order statistics-based nonlinear speech analysis. Control and Intelligent Systems, 30, 11-18
A fast and robust three-level binary higher order statistics (HOS) based algorithm for simultaneous voiced/unvoiced detection and pitch estimation of speech signals in coloure...

A local search for the timetabling problem.

Conference Proceeding
Rossi-Doria, O., Blum, C., Knowles, J., Sampels, M., Socha, K., & Paechter, B. (2001)
A local search for the timetabling problem. In E. Burke, & P. Causmaecker (Eds.), Proceedings of the Conference on the Practice and Theory of Automated Timetabling (PATAT 2002), 124-127
This work is part of the Metaheuristic Network, a European Commission project that seeks to empirically compare the performance of various metaheuristics on different combinat...

A GA evolving instructions for a timetable builder.

Conference Proceeding
Blum, C., Correia, S., Dorigo, M., Paechter, B., Rossi-Doria, O., & Snoek, M. (2001)
A GA evolving instructions for a timetable builder. In E. Burke, & P. Causmaecker (Eds.), Proceedings of the Conference on the Practice and Theory of Automated Timetabling (PATAT 2002), 120-123
In this work we present a Genetic Algorithm for tackling timetabling problems. Our approach uses an indirect solution representation, which denotes a number of instructions fo...