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Same data—different results? Towards a comparative approach to the identification of thematic structures in science

Science studies are persistently challenged by the elusive structures of their subject matter, be it scientific knowledge or the various collectivities of researchers engaged with its production. Bibliometrics has responded by developing a strong and growing structural bibliometrics, which is concerned with delineating fields and identifying thematic structures. In the course of...

The ecstasy and the agony of the altmetric score

Altmetrics have gained momentum and are meant to overcome the shortcomings of citation-based metrics. In this regard some light is shed on the dangers associated with the new “all-in-one” indicator altmetric score.

Interdisciplinarity and Impact: Distinct Effects of Variety, Balance, and Disparity

Interdisciplinary research is increasingly recognized as the solution to today’s challenging scientific and societal problems, but the relationship between interdisciplinary research and scientific impact is still unclear. This paper studies the association between the degree of interdisciplinarity and the number of citations at the paper level. Different from previous studies...

The 8th International Conference on Webometrics, Informetrics and Scientometrics & 13th COLLNET Meeting

The 8th International Conference on Webometrics, Informetrics and Scientometrics & 13th COLLNET Meeting was held in Seoul, Korea on 23–26 October 2012. The joint meeting was organised under the auspices of the international organisation COLLNET and by the Korea Institute of Science and Technology Information (KISTI). The event was hosted by the Korea Chamber of Commerce...

Bibliometric Evidence for a Hierarchy of the Sciences

The hypothesis of a Hierarchy of the Sciences, first formulated in the 19th century, predicts that, moving from simple and general phenomena (e.g. particle dynamics) to complex and particular (e.g. human behaviour), researchers lose ability to reach theoretical and methodological consensus. This hypothesis places each field of research along a continuum of complexity and...

Modeling science: studying the structure and dynamics of science

Mathematical models of the science and technology (S&T) system have a long tradition in scientometrics. They entail models of statistical properties such as the cumulative advantage model for citation patterns by Derek de Solla Price (1976) or models of scientific processes such as the epidemics of scientific ideas by William Goffman (1966). Frequently, new modeling attempts...

The 12th International conference on scientometrics and informetrics

The 12th International Conference on Scientometrics and Informetrics held in Rio de Janeiro (Brazil) in July 2009 was organised by BIREME/PAHO/WHO (Latin American and Caribbean Center on Health Sciences Information of the Pan American Health Organization/World Health Organization) and the Federal University of Rio de Janeiro (UFRJ), under the auspices of the International Society...

Optimized data fusion for K-means Laplacian clustering

Motivation: We propose a novel algorithm to combine multiple kernels and Laplacians for clustering analysis. The new algorithm is formulated on a Rayleigh quotient objective function and is solved as a bi-level alternating minimization procedure. Using the proposed algorithm, the coefficients of kernels and Laplacians can be optimized automatically. Results: Three variants of the...