DOI Suffix Analysis Dataset: Large-Scale Data on Suffix Length, Character Composition, and Bibliographic Metadata across Crossref, DataCite, and JaLC

<p dir="ltr"><b>This repository provides the data and analysis code associated with the manuscript "Design Practices of Persistent Identifiers in Open Research Information: An Empirical Analysis of DOI Suffixes across Crossref, DataCite, and JaLC," currently under review for the </b><b><i>Scientometrics</i></b><b> special issue on "Open Research Information."</b></p><p dir="ltr">The underlying study is based on 248,049,018 unique DOI records from three major DOI registration agencies: Crossref, DataCite, and the Japan Link Center (JaLC).

It examines DOI suffix characteristics from multiple perspectives, including suffix-length distributions and temporal trends, individual character usage and character-composition patterns, variation across DOI-associated platforms using fully qualified domain names (FQDNs), and the occurrence of strings corresponding to bibliographic metadata elements such as ISSNs, ISBNs, and publication years.</p><p dir="ltr">This repository contains the analysis scripts, derived datasets used to construct the tables and figures presented in the manuscript, and a Jupyter Notebook documenting the analytical workflow.