As we reported a few days ago, WorldCat.org pages now include schema.org markup. Richard Wallis has provided further insight into this news in a new article: "OCLC have been at the leading edge of publishing bibliographic resources as linked data for several years. At dewey.info they have been publishing the top levels of the Dewey classifications as linked data since 2009. As announced yesterday, this has now been increased to encompass 32,000 terms, such as this one for the transits of Venus. Also around for a few years is VIAF (the Virtual International Authorities File) where you will find URIs published for authors, such as this well known chap. These two were more recently joined by FAST (Faceted Application of Subject Terminology), providing usefully applicable identifiers for Library of Congress Subject Headings and combinations thereof."
He continues, "First significant bit of news – WorldCat.org is now publishing linked data for hundreds of millions of bibliographic items – that’s a heck of a lot of linked data by anyone’s measure. By far the largest linked bibliographic resource on the web. Also it is linked data describing things, that for decades librarians in tens of thousands of libraries all over the globe have been carefully cataloguing so that the rest of us can find out about them. Just the sort of authoritative resources that will help stitch the emerging web of data together. Second significant bit of news – the core vocabulary used to describe these bibliographic assets comes from schema.org. Schema.org is the initiative backed by Google, Yahoo!, Microsoft, and Yandex, to provide a generic high-level vocabulary/ontology to help mark up structured data in web pages so that those organisations can recognise the things being described and improve the services they can offer around them. A couple of examples being Rich Snippet results and inclusion in the Google Knowledge Graph."
Image: Courtesy schema.org