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Citation metrics serve as the cornerstone of scholarly impact evaluation despite their well-documented vulnerability to inflation through self-citation practices. This paper introduces the Self-Citation Adjusted Index (SCAI), a…

Digital Libraries · Computer Science 2025-05-13 Rahul Vishwakarma , Sinchan Banerjee

Impact factors (and similar measures such as the Scimago Journal Rankings) suffer from two problems: (i) citation behavior varies among fields of science and therefore leads to systematic differences, and (ii) there are no statistics to…

Digital Libraries · Computer Science 2010-04-27 Loet Leydesdorff , Tobias Opthof

Citation metrics are analytic measures used to evaluate the usage, impact and dissemination of scientific research. Traditionally, citation metrics have been independently measured at each level of the publication pyramid, namely at the…

Digital Libraries · Computer Science 2017-07-04 Jacques Balayla

Recently, the integrated impact indicator (I3) indicator was introduced where citations are weighted in accordance with the percentile rank class of each publication in a set of publications. I3 can also be used as a field-normalized…

Digital Libraries · Computer Science 2019-02-19 Lutz Bornmann , Alexander Tekles , Loet Leydesdorff

The impact factor (IF) of scientific journals has acquired a major role in the evaluations of the output of scholars, departments and whole institutions. Typically papers appearing in journals with large values of the IF receive a high…

Physics and Society · Physics 2014-05-13 Raj Kumar Pan , Santo Fortunato

One is inclined to conceptualize impact in terms of citations per publication, and thus as an average. However, citation distributions are skewed, and the average has the disadvantage that the number of publications is used in the…

Digital Libraries · Computer Science 2012-04-10 Loet Leydesdorff

The Journal Impact Factor (JIF) is linearly sensitive to self-citations because each self-citation adds to the numerator, whereas the denominator is not affected. Pinski & Narin (1976) derived the Influence Weight (IW) as an alternative to…

Digital Libraries · Computer Science 2019-08-16 Gangan Prathap , Loet Leydesdorff

Journal Impact Factor is a popular metric for determining the quality of a journal in academia. The number of citations received by a journal is a crucial factor in determining the impact factor, which may be misused in multiple ways.…

Social and Information Networks · Computer Science 2020-06-30 Baani Leen Kaur Jolly , Lavina Jain , Debajyoti Bera , Tanmoy Chakraborty

The Journal Impact Factor and other indicators that assess the average citation rate of articles in a journal are consulted by many academics and research evaluators, despite initiatives against overreliance on them. Despite this, there is…

Digital Libraries · Computer Science 2023-07-31 Mike Thelwall , Kayvan Kousha , Mahshid Abdoli , Emma Stuart , Meiko Makita , Paul Wilson , Jonathan Levitt

In bibliometrics, the association of "impact" with central-tendency statistics is mistaken. Impacts add up, and citation curves should therefore be integrated instead of averaged. For example, the journals MIS Quarterly and JASIST differ by…

Digital Libraries · Computer Science 2011-06-14 Loet Leydesdorff , Lutz Bornmann

A new citation index $h_{PI}$ for principal investigators (PIs) is defined in analogy to Hirsch's index $h$, but based on renormalized citations of a PI's papers. To this end, the authors of a paper are divided into two groups: PIs and…

Digital Libraries · Computer Science 2018-07-18 Christoph Steinbrüchel

Because of the variations in citation behavior across research fields, appropriate standardization must be applied as part of any bibliometric analysis of the productivity of individual scientists and research organizations. Such…

Digital Libraries · Computer Science 2018-11-01 Giovanni Abramo , Tindaro Cicero , Ciriaco Andrea D'Angelo

Over the past decade, national research evaluation exercises, traditionally conducted using the peer review method, have begun opening to bibliometric indicators. The citations received by a publication are assumed as proxy for its quality,…

Digital Libraries · Computer Science 2018-11-01 Giovanni Abramo , Tindaro Cicero , Ciriaco Andrea D'Angelo

Evaluation of journals for quality is one of the dominant themes of bibliometrics since journals are the primary venue of vetting and distribution of scholarship. There are many criticisms of quantifying journal impact with bibliometrics…

Digital Libraries · Computer Science 2021-02-23 Domenic Rosati

The concept of h-index has been proposed to easily assess a researcher's performance with a single number. However, by using only this number, we lose significant information about the distribution of citations per article in an author's…

Digital Libraries · Computer Science 2014-09-23 Antonis Sidiropoulos , Dimitrios Katsaros , Yannis Manolopoulos

Different scientific fields have different citation practices. Citation-based bibliometric indicators need to normalize for such differences between fields in order to allow for meaningful between-field comparisons of citation impact.…

Digital Libraries · Computer Science 2012-09-07 Ludo Waltman , Nees Jan van Eck

Early in researchers' careers, it is difficult to assess how good their work is or how important or influential the scholars will eventually be. Hence, funding agencies, academic departments, and others often use the Journal Impact Factor…

Digital Libraries · Computer Science 2017-06-21 Lutz Bornmann , Richard Williams

Metrics based on percentile ranks (PRs) for measuring scholarly impact involves complex treatment because of various defects such as overvaluing or devaluing an object caused by percentile ranking schemes, ignoring precise citation…

Digital Libraries · Computer Science 2012-05-14 Ping Zhou , Yongfeng Zhong

Probably Not. Journal Citation Indicator (JCI) was introduced to address the limitations of traditional metrics like the Journal Impact Factor (JIF), particularly its inability to normalize citation impact across different disciplines. This…

Digital Libraries · Computer Science 2025-04-01 Yu Liao , Li Li , Zhesi Shen

Citation prediction of scholarly papers is of great significance in guiding funding allocations, recruitment decisions, and rewards. However, little is known about how citation patterns evolve over time. By exploring the inherent involution…

Digital Libraries · Computer Science 2020-08-13 Xiaomei Bai , Fuli Zhang , Ivan Lee