You sometimes when working in OpenRefine have to deal with a large data set that refer to the same entity (person, city, book or any other entries) but using different spelling. When working with a large data set the clustering function can become unresponsive, due to the amount of computing done in order to run the different algorithms.
In this tutorial we will see how you can create subset of records to cluster using facets to better manage the compute load on your machine. If you want to cluster your full data set, you just need to run the cluster function on the different subset created with your facet.