Artículos con la etiqueta ‘preferencias colectivas’

City growth as a resource utilization problem

Por • 12 mar, 2014 • Category: Economía

We study a resource utilization scenario characterized by intrinsic attractiveness. We consider a system of many restaurants where customers compete, as in a game, to get the best services out of many choices using iterative learning. Results for the case with uniform attractiveness are reported. When attractiveness is uniformly distributed, it gives rise to a Zipf-Pareto law for the number of customers. We perform an exact calculation for the utilization fraction for the case when choices are made independent of attractiveness. A variant of the model is also introduced where the attractiveness can be treated as a fitness to stay in the business. When a restaurant loses customers, its fitness is replaced by a random fitness. The steady state fitness distribution is characterized by a power law, but the distribution in number of customers is still given by power law, implying the robustness of the model. Our model serves as a paradigm for city size distribution and the emergence of Zipf law.



The most controversial topics in Wikipedia: A multilingual and geographical analysis

Por • 31 may, 2013 • Category: sociologia

We present, visualize and analyse the similarities and differences between the controversial topics related to “edit wars” identified in 10 different language versions of Wikipedia. After a brief review of the related work we describe the methods developed to locate, measure, and categorize the controversial topics in the different languages. Visualizations of the degree of overlap between the top 100 list of most controversial articles in different languages and the content related geographical locations will be presented. We discuss what the presented analysis and visualizations can tell us about the multicultural aspects of Wikipedia, and, in general, about cultures of peer-production with focus on universal and specifically, local features. We demonstrate that Wikipedia is more than just an encyclopaedia; it is also a window into divergent social-spatial priorities, interests and preferences.