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基于1980-2010三十年的重要中文学术期刊中文献之间的引用关系数据,分析了中国学科知识网络的演化过程.这30年的数据被分为三部分:1981-1990、1991-2000和2001-2010,分别构建学科知识网络并分析其特征.通过对比分析,结果表明中国学科知识网络是一个规模较小但高度连接的网络.它的连接结构是均匀的,但是权值的分布却具有幂律分布的特征.在30年中,网络的连接紧密程度大幅增加,但是其度分布的均匀性和边权分布的不均匀性却一直存在.通过建模分析可知,中国学科知识网络的特征源于其固定的节点数目、重要节点之间优先建立连接以及重要节点之间边权值优先增加的演化规律.
The evolution of Chinese subject knowledge networks was analyzed based on citation data from the literature of important Chinese academic journals from 1980 to 2010. The data for the 30 years are divided into three parts: 1981-1990, 1991-2000 and 2001-2010, respectively, to build the subject knowledge network and analyze its characteristics.Through comparative analysis, the results show that the knowledge network of China is a small but highly connected network.Its connection structure is uniform, but the distribution of the value has In the past 30 years, the connection degree of the network has increased greatly, but the uniformity of its degree distribution and the non-uniformity of the distribution of the right power have always existed.Through the modeling analysis, it can be seen that the characteristics of the Chinese subject knowledge network From its fixed number of nodes, the priority between important nodes to establish a connection and priority between the important node weight value of the evolution of the law.