[目的/意义] 对比学科评价中常用数据库学科分类体系，实例分析学科分类差异对学科评价服务的影响，以引起高校图书馆对不同数据库学科分类差异的重视。[方法/过程] 对学科评价中几个常用数据库的学科分类体系进行梳理，并对JCR收录的11 681种期刊进行数据库的学科类别映射，详细阐述数据库之间的学科分类差异。结合图书馆学科评价的内容，以天津师范大学化学学科为例，分析学科分类差异对学科评价的影响。[结果/结论] 数据库学科分类差异会对图书馆学科评价中科研产出分析、科研影响力评价、科研人员评价3个方面产生一定的影响。提出减小影响的几点建议，为图书馆学科评价服务工作提供参考。
[Purpose/significance] This paper compares the classification system of commonly used database in discipline evaluation, and analyzes the influence of disciplinary classification differences on discipline evaluation services. The purpose is to make university libraries pay attention to the disciplinary classification difference.[Method/process] It sorted out the disciplinary classification system of several commonly used databases in subject evaluation and it based on the 11 681 journals included in the JCR to carry out the interdisciplinary mapping between databases. Combined with the contents of library subject evaluation, the chemistry of Tianjin Normal University was taken as an example to analyze the influence of disciplinary classification differences on subject evaluation.[Result/conclusion] The differences in database discipline classification has certain influence on the research of scientific research output, scientific research influence evaluation and scientific research personnel evaluation in library subject evaluation. Suggestions for reducing the impact are proposed in the article. This article provides reference for library subject evaluation services in the future.
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