Datasheet: Ontology 2 edition of DBpedia 2016-04

What's in the Box?

The Ontology2 edition of DBpedia 2015-10 consists of:

1. Ubuntu Linux 14.04LTS
2. OpenLink Virtuoso Open Source Edition (7 Development Line/2016-09-30)
3. A collection of shell scripts that support automation (RDFEasy)
4. A database containing facts and information from the English language DBpedia 2016-04.

This package was constructed with Real Semantics software from Ontology2; aspects of Real Semantics are patent pending in the United States.

How to get it

This product is on the AWS Marketplace and, if you have an AWS account, it can be provisioned with a single click, by going here.

Using it

Once the system is initialized (this may take 90 minutes at the first boot) you can run SPARQL queries against the data with the included OpenLink Virtuoso Open Source Edition database. See the tutorial to learn how to log in and write queries.

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How is it different from the DBpedia public SPARQL endpoint?

The DBpedia foundation provides a SPARQL endpoint free of charge. Although this is fine for getting started, the public SPARQL endpoint is a shared resource which can support only queries of limited complexity and which contains only a subset of the facts in Wikipedia. Specificially:

• the Ontology2 edition of DBpedia contains 50% more facts than the DBpedia SPARQL endpoint
• the Ontology2 edition of DBpedia contains the :wikiPageWikiLink property which describes links between Wikipedia pages. This is particularly useful for abstract concepts that don't easily fit into a clear ontology.

As the Ontology2 edition is a dedicated resource, you have the ability to run queries of arbitrary complexity that may time out on the public endpoint. Overall you are likely to experience better performance and may experience better reliability as you are isolated from the actions of other users.

Getting Support

There is a public mailing list for our AWS marketplace products at Google Groups.

The team at Ontology2 has extensive experience with Linked Data projects including DBpedia, Freebase, and other data sources; we've used this data for public web sites such as ny-pictures and our Legal Entity Identifier lookup. In particular, we're experienced at identifying and solving the data quality problems that people frequently experience with open data. Please contact us at inquiries@ontology2.com.

End User License

Users of this AMI are bound to this End User License Agreement. Users are allowed to use the data and software in this product in any way compatible with the original software licenses, which include

• Ubuntu Linux 14.04 AMI supplied by Amazon Web Services; components of Ubuntu are under the GNU Public License and other open source software licenses.
• Virtuoso Open Source Edition is Copyright (C) 1998-2016 OpenLink Software licensed under the GNU Public License.
• DBpedia data are © 2016 by the DBpedia Foundation under the Creative Commons Attribution-ShareAlike License and  GNU Free Documentation License. 
• RDFEasy is © 2014-2016 Ontology2 and licensed under the MIT License
  
Ontology2 asserts no intellectual property rights for the "The Ontology2 edition of DBpedia 2016-04" other than enumerated in the above list. The user of "The Ontology2 edition of DBpedia 2016-04" agrees to hold Ontology2 harmless to any and all damages that may be caused by use of this software and data.