เปรียบเทียบวิธี

	การวิเคราะห์วิวัฒนาการเชิงเนื้อหาโดยใช้ VOSviewer	การวิเคราะห์การอ้างอิงร่วม
สาขาวิชา	วิทยาศาสตรมิติ	บรรณมิติ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	2010–2011	1973
ผู้ริเริ่ม	Nees Jan van Eck & Ludo Waltman (VOSviewer); thematic evolution methodology associated with Cobo et al.	Henry Small
ประเภท	Scientometric workflow / bibliometric visualization pipeline	Method
แหล่งต้นตำรับ	van Eck, N. J., & Waltman, L. (2010). Software survey: VOSviewer, a computer program for bibliometric mapping. Scientometrics, 84(2), 523–538.	Small, H. (1973). Co-citation in the scientific literature: A new measure of the relationship between two documents. Journal of the American Society for Information Science, 24(4), 265–269.
ชื่อเรียกอื่น	VOSviewer thematic mapping, keyword co-occurrence thematic evolution, science mapping thematic evolution, VOSviewer longitudinal thematic analysis	co-citation mapping, historiograph, direct citation, citation pair analysis
ที่เกี่ยวข้อง	6	5
สรุป	VOSviewer-assisted thematic evolution analysis is a scientometric pipeline that uses the VOSviewer software to build keyword co-occurrence networks across chronological time slices of a bibliographic dataset, revealing how research themes emerge, converge, fragment, or disappear over time within a scientific field. By coupling VOSviewer's density-based clustering with period-by-period comparison, researchers obtain a visual and quantitative account of a field's intellectual trajectory.	Co-citation analysis is a method that identifies the intellectual structure of a research domain by examining how frequently pairs of documents are cited together in other publications. When two papers are frequently cited together in the literature, they are considered co-cited, indicating they are conceptually related or influential within the same research community. Developed by Henry Small in 1973, co-citation analysis maps the 'invisible colleges' of science—networks of researchers working on related problems—and reveals how knowledge domains evolve over time.