So sánh phương pháp

	Chỉ số Tác động của Tạp chí	Cơ sở dữ liệu Scopus
Lĩnh vực	Trắc lượng thư mục	Trắc lượng thư mục
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1955	2004
Người khởi xướng	Eugene Garfield, Institute for Scientific Information (ISI)	Elsevier
Loại	Metric	Database
Công trình gốc	Garfield, E. (1972). Citation analysis as a tool in journal evaluation. Science, 178(4060), 471-479.	Elsevier. (2024). Scopus: The largest abstract and citation database of peer-reviewed literature. Retrieved from https://www.elsevier.com/products/scopus
Tên gọi khác	IF, JIF, Impact Factor, 2-year Impact Factor	Scopus, Elsevier Scopus
Liên quan	5	5
Tóm tắt	Journal Impact Factor (JIF) is a metric developed by Eugene Garfield in 1955 and published annually by Clarivate Analytics through Journal Citation Reports (JCR). It measures the average citation frequency of articles published in a journal over a two-year window, serving as a proxy for journal prestige and influence. A journal's Impact Factor equals the number of citations received in year Y to articles published in Y-1 and Y-2, divided by the number of citable items published in that same window. Despite widespread adoption in research evaluation, Impact Factor has significant limitations and critics argue it conflates journal prestige with article quality.	Scopus, owned by Elsevier, is the world's largest abstract and citation database covering peer-reviewed journals, conference proceedings, and book chapters across all scientific disciplines. Launched in 2004, Scopus now indexes over 37 million documents from more than 6,500 journals, with expanded coverage of open-access publications and emerging regional journals. Scopus provides researchers and institutions with comprehensive citation tracking, field-normalized impact metrics (CiteScore, SJR, SNIP), and analytical tools for literature discovery, research evaluation, and institutional benchmarking.