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.
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。
The "impact factor" is the number of citations per article per year.
“影响因子”即每篇文章每年被引用的次数。
The "impact factor" is the number of citations per article per year.
“影响因子”即每篇文章每年被引用的次数。
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