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• A repository for the life science literature• Built in collaboration with PubMed Central USA (+ PMC Canada)since 2006• Led by EMBL-EBI, with the British Library, and the University ofManchester• Supported by 20 European life science funders, led by theWellcome Trust.• Built in the context of life science databases at EMBL-EBI
Europe PubMed Central• 28 million abstracts• 2.5 million full text articles (600K OA)• Website• Programmatic access
Four reasons to use Europe PMC• Search abstracts and full text in thesame interface• Semantic enrichment of full text• Link to databases that cite articles• Citation counts for articles (and sortorder)
genpdbrefsnpomimsprotpfamarrayexpressrefseqensemblinterproDOIsData Citation in Europe PMC articles~125,000 articles (out of 2.6 million)For exampleKafkas S, Kim JH, and McEntyre JR Database Citation in Full Text Articles, PLoS One
Tools for database developers andcurators• When people publish articles, they cite data• When people make data depositions, or curate databaserecords, they cite articles• RSS feed alerts when data is citedand unknown to databaseSenay Kafkas Jee-Hyub Kim
Some observations about data citationin research articles• High precision• Low frequency (5% of papers or less)• Re-use by submitting authors is common• Requirement to parse submission from reuse statements• Well-cited articles cite well-cited data, but on an entirelydifferent scale• Significant proportion of data being cited is not primarydata, but rather views/syntheses of primary data