网络信息资源的老化规律研究——以网络引文的可追溯性为视角

摘要

从网络引文的可追溯性角度研究网络信息资源的老化规律.具体分析CSSCI(1998～2009年)的183 986条P(Print)-W(Web)网络引文,发现各年网络引文量呈逻辑增长,篇均引文量也呈逐年增长趋势,其中近一半(48%)的P-W引文不可追溯.在不可追溯的引文类型中,404所占比例最大;通过引入传统文献老化规律模型--负指数增长曲线分析,P-W网络引文的平均可追溯半衰期为7 13年.P-W网络引文可追溯性与其URL域名类型、URL网页类型、URL层数和年代等的关系方面,P-W引文不可追溯分布具有一定的规律性;URL层数与URL字符数之间具有显著线性相关关系.%We study the obsolescence of network information resources based on the traceability of Web citations, we analysis 183 986 Web citations in CSSCI (1998 -2009) , and find that the amount of citations has the logical growth each year, which nearly half (48% ) of citations are non-retroactivity. The 404 type has largest proportion in the citations of non-retroactivity; introducing an aging model of the traditional literature-the negative exponential growth curve, the average Web citation half-life is 7. 13 years. The traceability of Web citations has some relation with in URL domain type, each year of the change, the URL page type. There are a significant linear correlation between the URL layers and URL characters.