Quality Control and Semantic Enrichment of Datasets R package eHDPrep version 1.4.0 A tool for the preparation and enrichment of health datasets for analysis (Toner et al. (2023) <doi:10.1093/gigascience/giad030>). Provides functionality for assessing data quality and for improving the reliability and machine interpretability of a dataset. 'eHDPrep' also enables semantic enrichment of a dataset where metavariables are discovered from the relationships between input variables determined from user-provided ontologies. Software Depends: R (>= 3.6.0) Imports: ggplot2 (>= 3.3.3), dplyr (>= 1.1.0), forcats (>= 0.5.0), stringr (>= 1.4.0), purrr (>= 0.3.4), tidyr (>= 1.1.2), kableExtra (>= 1.3.1), magrittr (>= 2.0.1), tibble (>= 3.0.5), scales (>= 1.1.1), rlang (>= 0.4.10), quanteda (>= 2.1.2), tm (>= 0.7-8), pheatmap (>= 1.0.12), igraph (>= 1.2.6), tidygraph (>= 1.2.0), readr (>= 1.4.0), readxl (>= 1.3.1), knitr (>= 1.31) Suggests: testthat (>= 2.1.0), ggraph (>= 2.0.5), rmarkdown (>= 2.3) Ian Overton <I.Overton@qub.ac.uk> Comprehensive R Archive Network (CRAN) Tom Toner [aut] (ORCID: <https://orcid.org/0000-0001-8059-5822>), Ian Overton [aut, cre] (ORCID: <https://orcid.org/0000-0003-1158-8527>) GPL-3 2026-02-20 application/tgz https://CRAN.R-project.org/package=eHDPrep doi:10.32614/CRAN.package.eHDPrep