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Methodol."],"published-print":{"date-parts":[[2023,11,30]]},"abstract":"<jats:p>\n            Many open-source software projects are self-organized and do not maintain official lists with information on developer roles. So, knowing which developers take core and maintainer roles is, despite being relevant, often tacit knowledge. We propose a method to\n            <jats:italic>automatically<\/jats:italic>\n            identify core developers based on role permissions of privileged events triggered in GitHub issues and pull requests. In an empirical study on 25\/GitHub projects, (1) we validate the set of automatically identified core developers with a sample of project-reported developer lists, and (2) we use our set of identified core developers to assess the accuracy of state-of-the-art unsupervised developer classification methods. Our results indicate that the set of core developers, which we extracted from privileged issue events, is sound and the accuracy of state-of-the-art unsupervised classification methods depends mainly on the data source (commit data versus issue data) rather than the network-construction method (directed versus undirected, etc.). In perspective, our results shall guide research and practice to choose appropriate\n            <jats:italic>unsupervised<\/jats:italic>\n            classification methods, and our method can help create reliable ground-truth data for training\n            <jats:italic>supervised<\/jats:italic>\n            classification methods.\n          <\/jats:p>","DOI":"10.1145\/3593803","type":"journal-article","created":{"date-parts":[[2023,4,22]],"date-time":"2023-04-22T11:02:28Z","timestamp":1682161348000},"page":"1-29","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":17,"title":["Automatic Core-Developer Identification on GitHub: A Validation Study"],"prefix":"10.1145","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6906-3489","authenticated-orcid":false,"given":"Thomas","family":"Bock","sequence":"first","affiliation":[{"name":"Saarland University, Saarland Informatics Campus, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-2724-1708","authenticated-orcid":false,"given":"Nils","family":"Alznauer","sequence":"additional","affiliation":[{"name":"Saarland University, Saarland Informatics Campus, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8812-3379","authenticated-orcid":false,"given":"Mitchell","family":"Joblin","sequence":"additional","affiliation":[{"name":"Siemens AG, and Saarland University, Saarland Informatics Campus, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3687-2233","authenticated-orcid":false,"given":"Sven","family":"Apel","sequence":"additional","affiliation":[{"name":"Saarland University, Saarland Informatics Campus, Germany"}]}],"member":"320","published-online":{"date-parts":[[2023,9,30]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10664-015-9371-y"},{"key":"e_1_3_2_3_2","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1145\/3183519.3183549","volume-title":"Proceedings of the International Conference on Software Engineering: Software Engineering in Practice (ICSE-SEIP\u201918)","author":"Agrawal Amritanshu","year":"2018","unstructured":"Amritanshu Agrawal, Akond Rahman, Rahul Krishna, Alexander Sobran, and Tim Menzies. 2018. 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