Blum, MichaelSachdeva, MadhavStricker, YannMumenthaler, RudolfBernard, JürgenEl-Assady, MennatallahSchulz, Hans-Jörg2024-05-212024-05-212024978-3-03868-253-0https://doi.org/10.2312/eurova.20241115https://diglib.eg.org/handle/10.2312/eurova20241115Digital Editions (DE) are scholarly document collections that make research artifacts accessible to both humans and machines in a structured manner, enriched with annotations. However, the interoperability and reusability of DE can be hampered by annotation inconsistencies within DE and heterogeneous annotation practices across DE. We present Tag-Xplore, an interactive and visual exploration tool for annotation practices within and across DE. Tag-Xplore offers multiple coordinated views that provide both attribute-based and document-based access to the huge search space at multiple granularities. The approach also provides rank, filter, and comparison techniques, to further support the exploration. With Tag-Xplore, data curators can validate assumptions based on existing knowledge and generate new insights about annotation practices. We demonstrate the usefulness of Tag-Xplore with two qualitative case studies on attribute ambiguity and outlier documentsAttribution 4.0 International LicenseCCS Concepts: Human-centered computing → Visual analytics; Visualization application domainsHuman centered computing → Visual analyticsVisualization application domains10.2312/eurova.202411156 pages