Microsoft Academic Graph (MAG) has been studied a lot concerning its suitability for bibliometric evaluations. In May 2021, it was announced that it would retire on December 31, 2021. Soon after that, the non-profit organization OurResearch, aiming at providing 'a fully open catalog of the global research system', announced they would preserve and incorporate the last full MAG corpus, only excluding patent data, and to continue and hopefully improve it. After the launch of OpenAlex in January 2022, it is of interest to know if the usefulness of the MAG data is preserved or even improved in OpenAlex. To this end, we compared metadata that are relevant for bibliometric analyses (in particular field and time normalization of citations) of MAG and OpenAlex: - the coverage of documents over the years, - the agreement of bibliographic data, - the numbers of references of each document, - the kind and distribution of document types, - the distribution and relation of subject classifications.
翻译：对微软学术图(MAG)进行了大量研究,以了解其是否适合进行数学评估。2021年5月,该图被宣布将于2021年12月31日退休。之后,非营利组织OurResearch(OurResearch,旨在提供“全面开放的全球研究系统目录 ” ) 宣布,它们将保存并纳入最后完整的磁数据,但只排除专利数据,并有望继续加以改进。在2022年1月OpenAlex推出后,人们很想知道在OpenAlex中磁数据是否有用,甚至是否有所改进。为此,我们比较了与MAG和OpenAlex的数学分析有关的元数据(特别是引文的字段和时间正常化):多年来的文件覆盖范围、书目数据协议、每份文件的参考文献数量、文件类型和分布、主题分类的分布和关系。
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