Universality of citation distributions: Toward an objective measure of scientific impact
Universality of citation distributions: Toward an objective measure of scientific impact
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DOI：
10.1073/pnas.0806977105
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发表时间：
2008-11-11
影响因子：
11.1
通讯作者：
Castellano, Claudio
中科院分区：
文献类型：
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作者：
Radicchi, Filippo;Fortunato, Santo;Castellano, Claudio
我们研究了几个学科中单个出版物收到的引文的分布，跨越了广泛的科学领域。我们发现一篇文章被引用c次的概率在不同学科之间有很大的差异，但是当考虑相对指标c（f）= c/c（0）时，所有分布都在通用曲线上重新标度，其中c（0）是该学科每篇文章的平均引用次数。此外，我们发现，相同的普遍行为发生时，在同一领域发表的文章的引用分布，但在不同的年份，进行比较。这些研究结果提供了一个强有力的验证cf作为跨学科和跨年度的引文绩效的无偏指标。基于这个指标，我们引入了一个泛化的h指数，适合比较科学家在不同领域的工作。
We study the distributions of citations received by a single publication within several disciplines, spanning broad areas of science. We show that the probability that an article is cited c times has large variations between different disciplines, but all distributions are rescaled on a universal curve when the relative indicator c(f) = c/c(0) is considered, where c(0) is the average number of citations per article for the discipline. In addition we show that the same universal behavior occurs when citation distributions of articles published in the same field, but in different years, are compared. These findings provide a strong validation of cf as an unbiased indicator for citation performance across disciplines and years. Based on this indicator, we introduce a generalization of the h index suitable for comparing scientists working in different fields.