It’s All Semantics: Open Data, Linked Data & The Semantic Web

This has been on my mind for a while – connecting the dots between all three of these concepts. I’m working on a more detailed post. I am glad to see that Richard MacManus from RWW just posted an article (It’s All Semantics: Open Data, Linked Data & The Semantic Web) related to this and i think its very useful.

Open data:

data on the site is available to the public, but it doesn’t link to other data sources on the Web. It could be data that has been uploaded in CSV forma

How is it different from Linked data:

Open Data is simply ‘data on the web,’ whereas Linked Data is a ‘web of data.’

So presumably Linked Data is data that links to other data.

Good. So how is linked data different from semantic data? Or are they they the same? From the RWW post – this is pretty good:

Campbell quotes from a number of other articles, in trying to come to a conclusion about how Linked Data and the Semantic Web relate. Perhaps the best definition she found was this one by Paul Walk:

  1. data can be open, while not being linked
  2. data can be linked, while not being open
  3. data which is both open and linked is increasingly viable
  4. the Semantic Web can only function with data which is both open and linked

So point #4 explains the main difference.  Bottom line data wants to be open and linked. When that happens it will enable the development of the Semantic Web.

Good stuff!

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