A Converter to RDF is a tool which converts application data from an application-specific format into RDF for use with RDF tools and integration with other data. Converters may be part of a one-time migration effort, or part of a running system which provides a semantic web view of a given application. See also: RDFImportersAndAdapters
More and more websites have started to embed structured data describing products, people, organizations, places, events into their HTML pages using markup standards such as RDFa, Microdata and Microformats.
The Web Data Commons project extracts this data from several billion web pages. The project provides the extracted data for download and publishes statistics about the deployment of the different formats.
Magnus Knuth, Dimitris Kontokostas, and Harald Sack. Proceedings of the 1st Workshop on Linked Data Quality co-located with 10th International Conference on Semantic Systems, LDQ@SEMANTiCS 2014, Leipzig, Germany, September 2nd, 2014., volume 1215 of CEUR Workshop Proceedings, CEUR-WS.org, (2014)