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不同于以整个文献的引用模式为知识系统骨架的研究思路,以知识系统中文献里的关键词为组元来建立共词网络是一个构造知识系统骨架和分析其演化的重要新手段。本文对共词网络的系统哲学和科学的基础进行了分析。以再生水为案例,建立起关键词的共词网络模型,以共词网络的构型演化和连接度分布等对知识系统的演化进行探讨。明确地揭示了共词网络是科学交流过程中形成的网络,知识系统具有自组织生成、构建和演化的基本规律。本文提出的共词网络方法和由其揭示的规律具有普适性,适合其它许多领域的知识系统的演化。本文的结果不仅在学术上有意义,在优化知识系统的对策和措施等具体应用中也有指导作用。
Different from the citation model of the whole literature as the research framework of knowledge system, the construction of a common word network based on the key words in the literature of knowledge system is an important new method to construct the skeleton of knowledge system and analyze its evolution. This article analyzes the philosophical and scientific basis of the co-word network. Taking recycled water as an example, a co-word network model of key words is established, and the evolution of knowledge system is discussed based on the conformational evolution and connection degree distribution of co-word networks. Clearly reveals that the co-word network is a network formed during the process of scientific exchange, and the knowledge system has the basic rules of self-organization generation, construction and evolution. The proposed method of co-word network and the laws disclosed by it are universal, and are suitable for the evolution of knowledge systems in many other fields. The result of this paper not only has academic significance, but also plays a guiding role in the specific application of countermeasures and measures to optimize knowledge system.