xxdi: An R Package for Evaluating Expertise Indices for Research Strength Assessment

Institutional performance assessment remains a key challenge to a multitude of stakeholders. Existing indicators such as h-type indicators, g-type indicators, and many others do not reflect expertise of institutions that defines their research portfolio. The package offers functionality to compute and visualise two novel indices: the x-index and the xd-index. The x-index evaluates an institution's scholarly expertise within a specific discipline or field, while the xd-index provides a broader assessment of overall scholarly expertise considering an institution's publication pattern and strengths across coarse thematic areas. These indices offer a nuanced understanding of institutional research capabilities, aiding stakeholders in research management and resource allocation decisions. For further details, see Lathabai, H.H., Nandy, A., and Singh, V.K. (2021) <doi:10.1007/s11192-021-04188-3>, and Nandy, A., Lathabai, H.H., and Singh, V.K. (2023) <doi:10.5281/zenodo.8305585>. This package provides wrapper functions for computing these exertise indices and their variants, for use with the standard output format of the Web of Science database.

Version: 1.26.8
Depends: R (≥ 4.4.2.0)
Imports: agop, checkmate, dplyr, ggplot2, stats, tidyr
Published: 2026-08-22
DOI: 10.32614/CRAN.package.xxdi
Author: Nilabhra R Das ORCID iD [cre, aut], Abhirup Nandy ORCID iD [aut]
Maintainer: Nilabhra R Das <nr.das at yahoo.com>
License: GPL-3
NeedsCompilation: no
Citation: xxdi citation info
Materials: NEWS
CRAN checks: xxdi results

Documentation:

Reference manual: xxdi.html , xxdi.pdf

Downloads:

Package source: xxdi_1.26.8.tar.gz
Windows binaries: r-devel: xxdi_1.26.4.zip, r-release: xxdi_1.26.8.zip, r-oldrel: xxdi_1.26.4.zip
macOS binaries: r-release (arm64): xxdi_1.26.8.tgz, r-oldrel (arm64): xxdi_1.26.8.tgz, r-release (x86_64): xxdi_1.26.8.tgz, r-oldrel (x86_64): xxdi_1.26.8.tgz
Old sources: xxdi archive

Linking:

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