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 [cre, aut], Abhirup Nandy [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

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