关键词: 社会圈子, 复杂网络, 语言竞争, 社会仿真, 计算实验

Abstract: Language evolution is one of the important problems in social science field. Before the social simulation methods are introduced in, this problem is a typical social science problem which can’t be applied to computing experiments. It is feasible to apply social simulation methods to this problem. This paper proposes a new dynamic social network model to study the competition between two languages. This model is based on agent modeling method and social circles theory. In order to reflect the vocabulary of the language and its proficiency, a language structure with two F-length integer-strings is introduced into the agent which is a node of the network. It proves that the new model has the same dynamic characteristics as the previous model and analyzes the effect of language policy by computational experiments. The dynamic characteristics are compared between bit-strings vocabulary structure and integer-strings vocabulary structure system. The experimental results show that the range of parameter values of language coexistence is very small and it is difficult to achieve the state of language coexistence without intervention, but the range is significantly broadened to achieve the coexistence state when the intervention is undertaken. Furthermore, it is obvious that the integer-strings vocabulary structure system is more expressive.

Key words: social circle, complex network, language competition, social simulation, computational experiment