Release 4 of Calais will be a big deal. In that release we’ll go beyond the ability to extract semantic data from your content. We will link that extracted semantic data to datasets from dozens of other information sources, from Wikipedia to Freebase to the CIA World Fact Book. In short – instead of being limited to the contents of the document you’re processing, you’ll be able to develop solutions that leverage a large and rapidly growing information asset: the Linked Data Cloud.
Ie: when analyzing a text, Open Calais will return URIs into DBPedia, Freebase, Musicbrainz… Thereby opening up the possibility for various of applications that would not be possible (or would be fairly complicated) without. One more step to make it possible to reuse all those data on the Web… Yey!
B.t.w.: I write these lines using WordPress and I have Zemanta’s Firefox plugin running to generate the tags. However, as far as I know (I may be wrong!), the Zemanta service does not provide those URI-s yet (they do provide some URI-s in their return format, but I am not sure those are LOD URIs). Maybe some day?
(Thanks to Yves for drawing my attention on this…)
(Note after the original publication of the blog: it seems I was wrong and Zemanta does have a similar feature, see Andraz’ comment.)