有界适应度景观与语言多样性的演化
Bounded fitness landscapes and the evolution of the linguistic diversity
摘要：
最近引入了一个简单的空间计算机模拟模型来研究语言多样性的演变。该模型考虑了选择性地理殖民，语言异常扩散和突变的过程。在这种方法中，我们为每种语言赋予一个适应度函数，该函数取决于说这种语言的人数。在这里，我们扩展了上述模型来研究饱和度的适应性对语言动态的作用。我们发现，殖民化后的语言多样性对该地区的依赖显示出一个幂律制度与非平凡的指数在非常好的协议与测量的指数与地球上的语言的实际分布。
英文摘要：
A simple spatial computer simulation model was recently introduced to study the evolution of the linguistic diversity. The model considers processes of selective geographic colonization, linguistic anomalous diffusion and mutation. In the approach, we ascribe to each language a fitness function which depends on the number of people that speak that language. Here we extend the aforementioned model to examine the role of saturation of the fitness on the language dynamics. We found that the dependence of the linguistic diversity on the area after colonization displays a power law regime with a nontrivial exponent in very good agreement with the measured exponent associated with the actual distribution of languages on the Earth.
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