2009年版的中国科技期刊引证报告(核心版)新提出了一个权威因子指标,权威因子的计算采用的是Prestige Rank算法,PrestigRank算法是在著名搜索引擎算法PageRank算法的基础上修改优化而成的,PrestigeRank算法专门针对期刊引用网络缺失严重提出了合理的解决方案,在权威因子的计算中,期刊之间的引用不再是同等对待,重要期刊的一次引用比次要期刊的一次引用要被赋予更高的权重。利用PrestigeRank算法计算2008年的中国科技论文与引文数据库(CSTPCD)的所有期刊的权威因子,并对权威因子与总被引频次进行了比较研究,发现总被引频次在一定程度上是流行性测度,而权威因子在更大程度上是权威性测度。我们也发现权威因子能部分消除因为学科规模和性质不同造成的被引机会的不同的影响。
The China S&T Journal Citation Report (CORE) promulgated by ISTIC in 2009 used a new journal evaluation indicator, authority factor, the calculation of which is based on the PrestigeRank algorithm, which is rooted in PageRank algorithm. PrestigeRank algorithm has found a solution suitable for cases where there are missing data in the database citing network. We made use of PrestigeRank to give the ranking of all journals in the Chinese Scientific and Technology Papers and Citation Database (CSTPCD) in 2008. We compared PrestigeRank result with citation ranking. We found that PrestigeRank could reflect journal's authority favorably. We also found that authority factor could partially eliminate the problem of the different cited opportunities because of the different size and nature of the subject.