The Free Your Metadata Named Entity Extractor extension helps you to enrich your data in OpenRefine using AlchemyAPI, DBpedia Lookup and Zemanta. The extension works on plain text field and any unstructured (meta)data
Build over time, the RefinePro knowledge base list tutorials, how to and tips for OpenRefine (formerly Google Refine)
Posted: 02 May 2012 07:26 AM PDT
A complete example on how to use the RDF extension in google refine.
Posted: 24 Apr 2012 07:00 AM PDT
An example of web scraping and data analysis using google refine. In this tutorial, the cluster function is used to clean up the data set. The analysis part could also have been done in google refine using the facet option.
The National Library of Ireland used google refine to improve the access to the Lawrence Collection (photography collection) by using freebase reconciliation service to map where pictures have been taken!
Posted: 10 Apr 2012 07:30 AM PDT
A nice tutorial explaining how to clean and facet data. This example is based on bank mortage data.