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Higher education systems in competitive environments generally present top universities, that are able to attract top scientists, top students and public and private financing, with notable socio-economic benefits in their region. The same…

Digital Libraries · Computer Science 2018-11-06 Giovanni Abramo , Tindaro Cicero , Ciriaco Andrea D'Angelo

Measures for research activity and impact have become an integral ingredient in the assessment of a wide range of entities (individual researchers, organizations, instruments, regions, disciplines). Traditional bibliometric indicators, like…

Digital Libraries · Computer Science 2020-04-22 Edwin A. Henneken , Michael J. Kurtz

Research performance values are not certain. Performance indexes should therefore be accompanied by uncertainty measures, to establish whether the performance of a unit is truly outstanding and not the result of random fluctuations. In this…

Digital Libraries · Computer Science 2018-10-31 Giovanni Abramo , Ciriaco Andrea D'Angelo , Leonardo Grilli

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

Bibliometricians have long recurred to citation counts to measure the impact of publications on the advancement of science. However, since the earliest days of the field, some scholars have questioned whether all citations should be worth…

Digital Libraries · Computer Science 2019-09-16 Cristiano Giuffrida , Giovanni Abramo , Ciriaco Andrea D'Angelo

The study of the concept of "scientific excellence" and the methods for its measurement and evaluation is taking on increasing importance in the development of research policies in many nations. However, scientific excellence results as…

Digital Libraries · Computer Science 2018-12-20 Giovanni Abramo , Ciriaco Andrea D'Angelo , Flavia Di Costa

The h-index has become a widely used metric for evaluating the productivity and citation impact of researchers. Introduced by physicist Jorge E. Hirsch in 2005, the h-index measures both the quantity (number of publications) and quality…

Digital Libraries · Computer Science 2025-03-19 Ali Borji

The impact of scientific publications has traditionally been expressed in terms of citation counts. However, scientific activity has moved online over the past decade. To better capture scientific impact in the digital era, a variety of new…

Digital Libraries · Computer Science 2009-06-30 Johan Bollen , Herbert Van de Sompel , Aric Hagberg , Ryan Chute

The formulation of national research policies would benefit greatly from reliable strategic analysis of the scientific infrastructure, aimed at identifying the relevant strengths and weaknesses at field level. Bibliometric methodologies…

Digital Libraries · Computer Science 2021-03-29 Giovanni Abramo , Ciriaco Andrea D'Angelo

I propose the index $h$, defined as the number of papers with citation number higher or equal to $h$, as a useful index to characterize the scientific output of a researcher.

Physics and Society · Physics 2016-09-08 J. E. Hirsch

The development of scientometric indicators and methods for evaluative purposes, requires a multitude of assumptions, conventions, limitations, and caveats. Given this, we cannot permit ambiguities in the key concepts forming the basis of…

Digital Libraries · Computer Science 2018-11-06 Giovanni Abramo

Performativity of predictions refers to the phenomenon where prediction-informed decisions influence the very targets they aim to predict -- a dynamic commonly observed in policy-making, social sciences, and economics. In this paper, we…

Machine Learning · Statistics 2025-10-28 Xiang Li , Yunai Li , Huiying Zhong , Lihua Lei , Zhun Deng

Bibliographic metrics are commonly utilized for evaluation purposes within academia, often in conjunction with other metrics. These metrics vary widely across fields and change with the seniority of the scholar; consequently, the only way…

Digital Libraries · Computer Science 2021-12-17 Sen Tian , Panos Ipeirotis

This is the first ever attempt of application in a country other than Italy of a research efficiency indicator (FSS), to assess and compare the performance of professors and universities, within and between countries. A special attention…

Digital Libraries · Computer Science 2019-07-04 Giovanni Abramo , Dag W. Aksnes , Ciriaco Andrea D'Angelo

This paper develops a novel methodological framework for assessing leadership potential and productivity within organisational structure represented by directed graphs. In this setting, individuals are modeled as nodes and asymmetric…

Optimization and Control · Mathematics 2025-08-04 Ramón Flores , Elisenda Molina , Juan Tejada

Quantifying the "capability" of a manufacturing process is an important initial step in any quality improvement program. Capability is usually defined in dictionaries as "the ability to carry out a task, to achieve an objective". Process…

Applications · Statistics 2015-03-25 Mahendra Saha , Sudhansu S. Maiti

We propose an operational, quantitative definition of intelligence for arbitrary physical systems. The intelligence density of a system is the ratio of the logarithm of its independent outputs to its total description length. A system…

Artificial Intelligence · Computer Science 2026-04-29 Kang-Sin Choi

Scientific output varies between research fields and between disciplines within a field such as astrophysics. Even in fields where publication is the primary output, there is considerable variation in publication and hence in citation…

Astrophysics · Physics 2009-11-11 F. P. Pijpers

Academic leadership is essential for research innovation and impact. Until now, there has been no dedicated measure of leadership by bibliometrics. Popular bibliometric indices are mainly based on academic output, such as the journal impact…

Digital Libraries · Computer Science 2016-10-13 Yang Liu , Fengrong Ou , Yan Deng , Bo Wu , Ruxi Liu , Hui Hua , Yuyuan Guan , Rentong Chen , Lars Gjesteby , Jiansheng Yang , Michael Vannier , Ge Wang

There is an evident and rapid trend towards the adoption of evaluation exercises for national research systems for purposes, among others, of improving allocative efficiency in public funding of individual institutions. However the desired…

Digital Libraries · Computer Science 2018-11-06 Giovanni Abramo , Ciriaco Andrea D'Angelo