Semantic On-Demand Adds Entity Linking with DBpedia Support

Our Entity Linking service is now in beta! Entity linking is a huge milestone for us because it transforms Extractiv's semantic output into linked data by automatically determining the identity of each entity mentioned in your text and associating it with a DBpedia URI whenever one exists.

Entity linking is tricky because names often have multiple meanings. For example, "Python" might refer to a type of snake, a programming language, a comedy troupe, or a number of other things. By intelligently using context, the linking service figures out which meaning makes the most sense and generates a DBpedia link accordingly.

Any type of entity may be linked as long as it has a URI in DBpedia. DBpedia is a companion project to Wikipedia whose goal is to provide a machine-readable version of Wikipedia in RDF format. We plan to eventually add links to other public knowledge bases, but we started with DBpedia because its URIs are already used to denote real-world entities in a wide variety of data sets, and because, with millions of topics, it provides very broad coverage.

All of our output formats (HTML, JSON, and of course RDF/XML) support entity links, but linking is currently only available using the On-Demand platform. Support for linking in the Crawling platform is coming soon.  Check our documentation for more details.

Comments

[Matthew Rowe]

Great stuff. Are you going to publish the details of your method? Or the datasets you used to assess the performance of those techniques?

[John Lehmann]

Thanks Matthew. Yes, details will be published formally in the late winter, early spring 2011. While we can't advertise those results directly, you'll be able to look them up. http://bit.ly/9MCupw

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