改进版学术影响力指标，更精准评估大国科研贡献。
The Rn-index: a more accurate variant of the Rk-index
- 基于论文引用排名比值之和计算，修正原指标缺陷。
- 对中美等高产领先国家的科研贡献评估更准确。
- 计算简单可分项统计，适合政策与机构评估使用。
推动知识边界的贡献是评估国家与机构研究绩效的关键指标，常无法通过常规引文指标反映。Rk-index 专门用于衡量此类贡献，而 Rn-index 是其改进版本，尤其在评估产出大量全球前沿成果的国家（如美国和中国）时更具准确性。该指标计算简便，仅需将按引用量排序的论文的本地排名与全球排名之比求和即可获得。此外，Rn-index 还支持分数化计算，便于多维度分析。
原文摘要 · Abstract (English)
The contribution to pushing the boundaries of knowledge is a critical metric for evaluating the research performance of countries and institutions, which in many cases is not revealed by common bibliometric indicators. The Rk-index was specifically designed to assess such contributions, and the Rn-index is a variant that corrects the weakness of the Rk-index, particularly in the evaluation of countries that produce a high proportion of global advancements. This is the case of the USA and China in many technological fields. Additionally, the Rn-index is simple to calculate and understand, as it involves only summing the ratios between the local and global ranks of papers, ordered by their citation count. Moreover, the Rn-index may also be fractionally counted.
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