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Cloud based Public Data sets from Amazon

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Amazon announced recently that their EC2 customers can now access a number of public datasets including the DBPedia which contains 274 million RDF triples.  This is very cool news. Provides a great cloud based resource for semantic reasoning over this public data, and the ability to incorporate it into your own custom applications.

Here’s just a few of the public data sets that are now available on Amazon web services.

DBpedia Knowledge Base provided by DBpedia.
DBpedia is a community effort to extract structured information from Wikipedia and to make this information available on the Web. The DBpedia knowledge base currently describes more than 2.6 million things, including at least 213,000 persons, 328,000 places, 57,000 music albums, 36,000 films, 20,000 companies. The knowledge base consists of 274 million pieces of information (RDF triples).

Freebase Data Dump provided by Freebase.com.
A data dump of all the current facts and assertions in the Freebase system. Freebase is an open database of the world’s information, covering millions of topics in hundreds of categories.

Wikipedia Extraction (WEX) provided by Freebase.com.
The Freebase Wikipedia Extraction (WEX) is a processed dump of the English language Wikipedia.

Check out the Amazon site for more details on the public databases: http://aws.amazon.com/publicdatasets/

Also it is interesting to note that the DBPedia folks recently announced links into the Freebase database that are referenced in their own RDF triples.   These links show up as RDF triples that use the OWL SameAs property like this:

http://dbpedia.org/resource/Woody_Allen owl:sameAs  http://rdf.freebase.com/ns/guid.9202a8c04000641f800000000004064f

These new links are provided in the 3.2 version of the DBPedia, which you can play around with directly using their SPARQL query endpoint located at http://dbpedia.org/sparql.  They also have a richer query interface with sampel SPARQL queries here.



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