How to improve the metadata coverage and quality in open scholarly metadata databases for Open Access publications?

Open scholarly metadata databases such as OpenAlex and OpenAIRE can be used to measure the progress of the implementation of Open Access (OA) in a country or in an institution. The coverage and quality of the publication metadata available in such databases can still be improved. Since some of the registries used as a source in those global databases are community-led, it is possible for anyone to contribute to their improvement. The presentation is addressed at professionals involved in OA or research evaluation, librarians, and anyone interested in open scholarly metadata databases. It will first handle some challenges of using such databases for quantitative purposes (bibliometrics). It will then introduce tools that anyone can use to improve the coverage and quality of the metadata in such databases. A particular focus will be placed on the metadata required for analyses of OA publications output from Swiss institutions.