Artículos de revistas
Quantifying the interdisciplinarity of scientific journals and fields
Fecha
2013-04Registro en:
Journal of Informetrics, Amsterdam: Elsevier BV, v. 7, n. 2, p. 469-477, Apr. 2013
1751-1577
10.1016/j.joi.2013.01.007
Autor
Silva, F. N.
Rodrigues, Francisco Aparecido
Oliveira Junior, Osvaldo Novais de
Costa, Luciano da Fontoura
Institución
Resumen
There is an overall perception of increased interdisciplinarity in science, but this is difficult to confirm quantitatively owing to the lack of adequate methods to evaluate subjective phenomena. This is no different from the difficulties in establishing quantitative relationships in human and social sciences. In this paper we quantified the interdisciplinarity of scientific journals and science fields by using an entropy measurement based on the diversity of the subject categories of journals citing a specific journal. The methodology consisted in building citation networks using the Journal Citation Reports® database, in which the nodes were journals and edges were established based on citations among journals. The overall network for the 11-year period (1999–2009) studied was small-world and followed a power-law with exponential cutoff distribution with regard to the in-strength. Upon visualizing the network topology an overall structure of the various science fields could be inferred, especially their interconnections. We confirmed quantitatively that science fields are becoming increasingly interdisciplinary, with the degree of interdisplinarity (i.e. entropy) correlating strongly with the in-strength of journals and with the impact factor.