4 research outputs found
Interdisciplinarity metric based on the co-citation network
Quantifying the interdisciplinarity of a research is a relevant problem in
the evaluative bibliometrics. The concept of interdisciplinarity is ambiguous
and multidimensional. Thus, different measures of interdisciplinarity have been
propose in the literature. However, few studies have proposed interdisciplinary
metrics without previously defining classification sets, and no one use the
co-citation network for this purpose. In this study we propose an
interdisciplinary metric based on the co-citation network. This is a way to
define the publication's field without resorting to pre-defined classification
sets. We present a characterization of a publication's field and then we use
this definition to propose a new metric of the interdisciplinarity degree for
publications (papers) and journals as units of analysis. The proposed measure
has an aggregative property that makes it scalable from a paper individually to
a set of them (journal) without more than adding the numerators and
denominators in the proportions that define this new indicator. Moreover, the
aggregated value of two or more units is strictly among all the individual
values.Comment: 9 pages, 2 figures, 1 tabl
Altmetric Analysis of Highly Cited Publications on Digital Library in Brazil and India: A Comparative Study
In Library and Information Science, Altmetrics is one of the emerging metrics to capture the online attention of scholarly literature. The present paper is an attempt to do a correlation study of an altmetric score and citations received by the highly cited publications of Digital library in Brazil and India country during 1989-2017. The study reveals that India is the county which received altmetric attention as compared to Brazil. While doing Altmetric analysis, it was found that discipline wise, Librarians followed by PhD scholar are the maximum readers whereas subject-wise, Computer science professionals contribute the maximum readership followed by social science disciplines in India in the field of a digital library. So, it is the need of time to explore the area more so that altmetric would become one of the standard indicators to measure the research impact in a professional
Research assessment by percentile-based double rank analysis
In the double rank analysis of research publications, the local rank position
of a country or institution publication is expressed as a function of the world
rank position. Excluding some highly or lowly cited publications, the double
rank plot fits well with a power law, which can be explained because citations
for local and world publications follow lognormal distributions. We report here
that the distribution of the number of country or institution publications in
world percentiles is a double rank distribution that can be fitted to a power
law. Only the data points in high percentiles deviate from it when the local
and world parameters of the lognormal distributions are very different.
The likelihood of publishing very highly cited papers can be calculated from
the power law that can be fitted either to the upper tail of the citation
distribution or to the percentile-based double rank distribution. The great
advantage of the latter method is that it has universal application, because it
is based on all publications and not just on highly cited publications.
Furthermore, this method extends the application of the well-established
percentile approach to very low percentiles where breakthroughs are reported
but paper counts cannot be performed.Comment: A pdf file containing text, 9 figures and 4 tables. Accepted in
Journal of Informetric