文献老化对数正态分布模型  

Literature Aging Lognormal Distribution Model

作　　者：周爱民[1] 

机构地区：[1]郑州大学图书馆,郑州450001

出　　处：《情报杂志》2012年第9期59-62,72,共5页Journal of Intelligence

摘　　要：为了反映文献老化曲线的形态,减少拟合误差,通过与概率分布函数曲线的对比分析,提出文献老化对数正态分布模型,并给出了此模型引文半衰期的计算方法。通过示例建模验证了模型的有效性,为文献老化研究提供了一种有效的方法。To reflect the curve shape of the literature aging, reduce the fitting error, through a comparative analysis of the probability dis.. tribution function curve, this paper proposes a lognormal distribution model and presents the citation half-life calculation method based on this model. It also gives an example of modeling to verify the validity of the model. The findings provide an effective method for the re- search of literature aging.

关 键 词：文献老化 对数正态分布模型 文献计量 引文半衰期 曲线形态 

分 类 号：G256[文化科学—图书馆学]