A novel approach to citation normalization: a similarity-based method for creating reference sets
2015 (English)In: Journal of the Association for Information Science and Technology, ISSN 2330-1635, E-ISSN 2330-1643, Vol. 66, no 3, 489-500 p.Article in journal (Refereed) Published
A similarity-oriented approach for deriving reference values used in citation normalization is explored and contrasted with the dominant approach of utilizing database-defined journal sets as a basis for deriving such values. In the similarity-oriented approach, an assessed article's raw citation count is compared with a reference value that is derived from a reference set, which is constructed in such a way that articles in this set are estimated to address a subject matter similar to that of the assessed article. This estimation is based on second-order similarity and utilizes a combination of 2 feature sets: bibliographic references and technical terminology. The contribution of an article in a given reference set to the reference value is dependent on its degree of similarity to the assessed article. It is shown that reference values calculated by the similarity-oriented approach are considerably better at predicting the assessed articles' citation count compared to the reference values given by the journal-set approach, thus significantly reducing the variability in the observed citation distribution that stems from the variability in the articles' addressed subject matter.
Place, publisher, year, edition, pages
Wiley-Blackwell, 2015. Vol. 66, no 3, 489-500 p.
bibliometrics, scientometrics, citation analysis, normalized citation impact, similarity measures
Research subject biblioteks- och informationsvetenskap
IdentifiersURN: urn:nbn:se:umu:diva-88877DOI: 10.1002/asi.23193ISI: 000350100500005OAI: oai:DiVA.org:umu-88877DiVA: diva2:717780