一个用于识别睡美人文献的新的无参数指标——基于“Science”和“Nature”上睡美人文献的验证

A New Parameter-free Index for Identifying “Sleeping Beauty”Literature

借鉴睡美人指数(B指数)基本框架,通过将考察对象"年度被引次数"优化为"年度被引次数累积百分比",提出Bcp指数,重新定义唤醒时间、睡眠深度和唤醒强度。通过识别"Science"和"Nature"上的睡美人文献进行检验,结果表明,Bcp指数继承了B指数对那些非常显著的睡美人文献高度敏感的优点。Bcp指数框架下计算出的唤醒时间更符合实际情况,而B指数框架下的唤醒时间易被延迟估计。Bcp指数考虑了观察期内论文全部的引文曲线,规避了B指数无法反映年度被引次数达到最大值以后的引文曲线的缺点。Bcp指数对论文发表之初被引次数的约束效力显著高于B指数,更符合睡美人文献早期零被引和低被引的特征。Bcp指数对年龄大、总被引次数和年度被引次数相对较低的睡美人文献更敏感,有利于挖掘平常易被忽视的非高被引文献中睡美人文献的存在规律。Bcp指数规避了人为参数主观界定的不足,以及不同学科领域论文被引规模差异对睡美人文献统一定义的干扰。

In reference of ＂beauty coefficient＂ （B index） , at the same time, improving yearly citations as yearly accumula- tive percentage of citations, this paper proposes a new ＂beauty coefficient percentage＂ （ Bcp index ） , which redefines ＂awaking time sleeping depth＂ and ＂awaking intensity＂ . Through identifying the sleeping beauty literature on ＂Science＂ and ＂Nature＂ and testing the literature using Bep index, results show that Bcp index inherits the advantage of highly sensitive to obvious sleeping beauty literature. Moreover, Bcp index is superior to B index in the following aspects. First, the awaking time computed by Bcp in- dex is more accurate than B index which delays the actual awaking time. Second, Bcp index avoids the defect that B index could not reflect the citation curve when the yearly citations reach the maximum by considering all citation curves of literature under observa- tion. Third, the restraint of Bcp index for citations of the papers initially published is clearly higher than B index, which conforms to the low and even zero citations of sleeping beauty literature in its early period. Fourth, Bqo index is more sensitive to old sleeping beauty literatures that are relatively low in total citations and yearly citations. This is helpful to discover the patterns of sleeping beauty literatures in infrequently cited papers. Last, Bcp index avoids the subjectivity of parameters set by human and the distraction of different citation scales in different disciplines in defining sleeping beauty literature universally.