| 赵星.JCR五年期影响因子探析[J].中国图书馆学报,2010,36(3): |
| An Analysis of the 5-Year Impact Factor in JCR |
| JCR五年期影响因子探析 |
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| DOI： |
| Key words:5-Year Impact Factor,Journal evaluation indicator,Citation evaluation,Citation analysis,Bibliometrics |
| 中文关键词: 5年期影响因子，期刊评价指标，引文评价，引文分析，文献计量学 |
| 基金项目:本文系重庆大学研究生院创新团队建设项目“信息计量学研究团队”（批准号：200909C0012）研究成果。 |
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| Abstract: |
| Based on the data of 6015 journals collected in the Journal Citation Reports (JCR), the author investigates the characteristics of 5-Year Impact Factor (IF5) with the method of statistical study. Results show that as a representative average indicator in journal evaluation, IF5 can reflect the high peak of citation of most journals; in addition, the distribution of IF5 follows Bradford's Law. A rank correlation between IF5 and IF is found, but there are also significant differences. Their evaluation results are consistent relatively in top and bottom level journals, but there are differences in moderate level journals. At last, the author presents two new indicators IFa and IFb. The former can measure the differences between IF5 and IF and the latter can integrate their evaluation information. 2 figs. 7 tabs. 12 refs. |
| 中文摘要: |
| 使用期刊引证报告（JCR）6015种期刊数据，以统计学方法探索性地分析5年期影响因子IF5的特点。结果显示，IF5作为具有代表性的平均性期刊评价指标，能更好地反映多数期刊被引高峰，总体符合布拉德福分布。IF5与2年期影响因子IF存在排序相关，也有显著统计学差异，两者测评结果在较好和较差期刊上相对一致，但在多数水平居中的期刊上存在区别。最后，给出IFa指数测度两种影响因子的差别和IFb指数综合两种影响因子的评价信息。图2。表7。参考文献12。 |
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