Mikrokosmos: A Dataset for YARRRML Evolution

The Mikrokosmos dataset contains (1) a list of open source repositories that contain YARRRML mappings, (2) a list of commits from these repositories that modify the YARRRML mappings, labelled with the extended CCC scheme to classify how the commit modifies the YARRRML mappings. The dataset was created 20.05.2026 by Sehar Shafique and Eduard Kamburjan for the paper A Mikrokosmos of Mappings: An Empirical Study of YARRRML Evolution.