Scientometrics is the field of study which concerns itself with measuring and analysing scientific literature. Scientometrics is a sub-field of bibliometrics. Major research issues include the measurement of the impact of research papers and academic journals, the understanding of scientific citations, and the use of such measurements in policy and management contexts. In practice there is a significant overlap between scientometrics and other scientific fields such as information systems, information science, science of science policy, sociology of science, and metascience.
Modern scientometrics is mostly based on the work of Derek J. de Solla Price and Eugene Garfield. The latter created the Science Citation Index and founded the Institute for Scientific Information which is heavily used for scientometric analysis. A dedicated academic journal, Scientometrics, was established in 1978. The industrialization of science increased the quantity of publications and research outcomes and the rise of the computers allowed effective analysis of this data. While the sociology of science focused on the behavior of scientists, scientometrics focused on the analysis of publications. Accordingly, scientometrics is also referred to as the scientific and empirical study of science and its outcomes.
Later, around the turn of the century, evaluation and ranking of scientists and institutions came more into the spotlights. Based on bibliometric analysis of scientific publications and citations, the Academic Ranking of World Universities ("Shanghai ranking") was first published in 2004 by the Shanghai Jiao Tong University. Impact factors became an important tool to choose between different journals and the rankings such as the Academic Ranking of World Universities and the Times Higher Education World University Rankings (THE-ranking) became a leading indicator for the status of universities. The h-index became an important indicator of the productivity and impact of the work of a scientist. However, alternative author-level indicators has been proposed (see for example).
Around the same time, interest of governments in evaluating research for the purpose of assessing the impact of science funding increased. As the investments in scientific research were included as part of the U.S. American Recovery and Reinvestment Act of 2009 (ARRA), a major economic stimulus package, programs like STAR METRICS were set up to assess if the positive impact on the economy would actually occur.
Methods of research include qualitative, quantitative and computational approaches. The main foci of studies have been on institutional productivity comparisons, institutional research rankings, journal rankings  establishing faculty productivity and tenure standards, assessing the influence of top scholarly articles, and developing profiles of top authors and institutions in terms of research performance 
One significant finding in the field is a principle of cost escalation to the effect that achieving further findings at a given level of importance grow exponentially more costly in the expenditure of effort and resources. However, new algorithmic methods in search, machine learning and data mining are showing that is not the case for many information retrieval and extraction-based problems. Related fields are the history of science and technology, philosophy of science and sociology of scientific knowledge.
Journals in the field include Scientometrics, Journal of the American Society for Information Science and Technology, and Journal of Informetrics. The International Society for Scientometrics and Informetrics founded in 1993 is an association of professionals in the field.
Common Scientometric indexes
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a measure reflecting the yearly average number of citations to recent articles published in that journal. It is frequently used as a proxy for the relative importance of a journal within its field; journals with higher impact factors are often deemed to be more important than those with lower ones. The impact factor was devised by Eugene Garfield, the founder of the Institute for Scientific Information (ISI).
Science Citation Index
The Science Citation Index (SCI) is a citation index originally produced by the Institute for Scientific Information (ISI) and created by Eugene Garfield. It was officially launched in 1964. It is now owned by Clarivate Analytics (previously the Intellectual Property and Science business of Thomson Reuters). The larger version (Science Citation Index Expanded) covers more than 8,500 notable and significant journals, across 150 disciplines, from 1900 to the present. These are alternatively described as the world's leading journals of science and technology, because of a rigorous selection process.
An acknowledgement index (British English spelling) or acknowledgment index (American English spelling) is a method for indexing and analyzing acknowledgments in the scientific literature and, thus, quantifies the impact of acknowledgements. Typically, a scholarly article has a section in which the authors acknowledge entities such as funding, technical staff, colleagues, etc. that have contributed materials or knowledge or have influenced or inspired their work. Like a citation index, it measures influences on scientific work, but in a different sense; it measures institutional and economic influences as well as informal influences of individual people, ideas, and artifacts. Unlike the impact factor, it does not produce a single overall metric, but analyses the components separately. However, the total number of acknowledgements to an acknowledged entity can be measured and so can the number of citations to the papers in which the acknowledgement appears. The ratio of this total number of citations to the total number of papers in which the acknowledge entity appears can be construed as the impact of that acknowledged entity.
- Author-level metric
- Article-level metric
- Citation analysis
- Citation index
- College and university rankings
- Erdős number
- Impact factor
- Journal of Informetrics
- Journal ranking
- SCImago Journal Rank
- Semantic Scholar
References and footnotes
- Leydesdorff, L. and Milojevic, S., "Scientometrics" arXiv:1208.4566 (2013), forthcoming in: Lynch, M. (editor), International Encyclopedia of Social and Behavioral Sciences subsection 85030. (2015)
- De Solla Price, D., editorial statement. Scientometrics Volume 1, Issue 1 (1978)
- Lowry, Paul Benjamin; Romans, Denton; Curtis, Aaron (2004). "Global journal prestige and supporting disciplines: A scientometric study of information systems journals". Journal of the Association for Information Systems. 5 (2): 29–80. SSRN 666145.
- Lowry, Paul Benjamin; Moody, Gregory D.; Gaskin, James; Galletta, Dennis F.; Humpherys, Sean; Barlow, Jordan B.; and Wilson, David W. (2013). "Evaluating journal quality and the Association for Information Systems (AIS) Senior Scholars’ journal basket via bibliometric measures: Do expert journal assessments add value?," MIS Quarterly (MISQ), vol. 37(4), 993–1012. Also, see YouTube video narrative of this paper at: https://www.youtube.com/watch?v=LZQIDkA-ke0.
- Belikov, A.V.; Belikov, V.V. (2015). "A citation-based, author- and age-normalized, logarithmic index for evaluation of individual researchers independently of publication counts". F1000Research. 4: 884. doi:10.12688/f1000research.7070.1. PMC 4654436.
- Lane, J (2009). "Assessing the Impact of Science Funding". Science. 324.
- Lowry, Paul Benjamin; Humphreys, Sean; Malwitz, Jason; Nix, Joshua C (2007). "A scientometric study of the perceived quality of business and technical communication journals". IEEE Transactions on Professional Communication. 50 (4): 352–378. doi:10.1109/TPC.2007.908733. SSRN 1021608. Recipient of the Rudolph Joenk Award for Best Paper Published in IEEE Transactions on Professional Communication in 2007.
- Dean, Douglas L; Lowry, Paul Benjamin; Humpherys, Sean (2011). "Profiling the research productivity of tenured information systems faculty at U.S. institutions". MIS Quarterly. 35 (1): 1–15. SSRN 1562263.
- Karuga, Gilbert G.; Lowry, Paul Benjamin; Richardson, Vernon J. (2007). "Assessing the impact of premier information systems research over time". Communications of the Association for Information Systems. 19 (7): 115–131. SSRN 976891.
- Lowry, Paul Benjamin; Karuga, Gilbert G.; Richardson, Vernon J. (2007). "Assessing leading institutions, faculty, and articles in premier information systems research journals". Communications of the Association for Information Systems. 20 (16): 142–203. SSRN 1021603.
- Journal of Informetrics.
- Garfield, E. (1955). "Citation Indexes for Science: A New Dimension in Documentation through Association of Ideas". Science. 122 (3159): 108–11. Bibcode:1955Sci...122..108G. doi:10.1126/science.122.3159.108. PMID 14385826.
- Garfield, Eugene (2011). "The evolution of the Science Citation Index" (PDF). International Microbiology. 10 (1): 65–69. doi:10.2436/20.1501.01.10.
- Garfield, Eugene (1963). "Science Citation Index" (PDF). Science Citation Index 1961. 1: v–xvi. Retrieved 2013-05-27.
- "History of Citation Indexing". Clarivate Analytics. November 2010. Retrieved 2010-11-04.
- "Science Citation Index Expanded". Retrieved 2017-01-17.
- Ma, Jiupeng; Fu, Hui-Zhen; Ho, Yuh-Shan (December 2012). "The Top-cited Wetland Articles in Science Citation Index Expanded: characteristics and hotspots". Environmental Earth Sciences. 70 (3): 1039. Bibcode:2009EES....56.1247D. doi:10.1007/s12665-012-2193-y.
- Ho, Yuh-Shan (2012). "The top-cited research works in the Science Citation Index Expanded" (PDF). Scientometrics. 94 (3): 1297. doi:10.1007/s11192-012-0837-z.
- Councill, Isaac G.; Giles, C. Lee; Han, Hui; Manavoglu, Eren (2005). "Automatic acknowledgement indexing: expanding the semantics of contribution in the CiteSeer digital library". Proceedings of the 3rd international conference on Knowledge capture. K-CAP '05. pp. 19–26. CiteSeerX 10.1.1.59.1661. doi:10.1145/1088622.1088627. ISBN 1-59593-163-5.
- Giles, C. L.; Councill, I. G. (December 15, 2004). "Who gets acknowledged: Measuring scientific contributions through automatic acknowledgment indexing" (PDF). Proc. Natl. Acad. Sci. U.S.A. 101 (51): 17599–17604. Bibcode:2004PNAS..10117599G. doi:10.1073/pnas.0407743101. PMC 539757.
- Harnad, S. (2009). "Open Access Scientometrics and the UK Research Assessment Exercise". Scientometrics. 79 (1): 147–156. arXiv:cs/0703131. CiteSeerX 10.1.1.561.7204. doi:10.1007/s11192-009-0409-z.
- Harnad, S (2008). "Validating Research Performance Metrics Against Peer Rankings". Ethics in Science and Environmental Politics. 8 (11).
- The Places & Spaces: Mapping Science exhibit at the American Museum of Science and Energy, September 7, 2007 – January 7, 2008.