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.
You might be interested to read also the Data Exploration Tutorial with OpenRefine that show, based on the same database, how to use OpenRefine to analyse the data (and not only clean them).