I noticed Cambridge University Library has released some RDF data under a PDDL license, as part of the JISC funded Comet project. Whats the best way to get to this data?

asked 22 Jul '11, 11:37

Ed%20Chamberlain's gravatar image

Ed Chamberlain
accept rate: 0%

In addition to bulk downloads, several access and query methods are available.

If you know a URI, an httpd request for the URL should return data in the requested format: i.e.

 curl -H "Accept: application/rdf+xml" http://data.lib.cam.ac.uk/id/entry/cul_comet_pddl_4589705
Alternatively, add .nt,.xml,.json,.js,.ttl to the URL will also return data in the requested format.

If you know a label but not a URI, try appending it this URl:

 curl -H http://data.lib.cam.ac.uk/label/Dogs
 curl -H http://data.lib.cam.ac.uk/label/Napoleon I, Emperor of the French, 1769-1821
If a URI is found, a 302 response with the correct location should be returned. If not, a html body will be returned.

Update: This functionality has been extended to support ISBN:

url -H http://data.lib.cam.ac.uk/isbn/2251326219

There is also a SPARQL endpoint, although access is somewhat restricted and can be a bit slow. SPARQL results can be returned over httpd. The site also has a basic entry level tutorial for SPARQL novices.


Finally, if you don't like SPARQL, a query can be run over the XML and JSON web services available at http://www.lib.cam.ac.uk/api, although a bit more hacking is required to get to RDF formatted data.

Try a simple query here:

Split up the extID field on a pipe character |, (|cambrdgedb|4979217) becomes cambrdgedb and 4979217

then rebuild like so ...


If you get a 404 back, then we have no RDF currently


answered 22 Jul '11, 11:51

Ed%20Chamberlain's gravatar image

Ed Chamberlain
accept rate: 0%

edited 25 Jul '11, 10:11

Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported



Asked: 22 Jul '11, 11:37

Seen: 788 times

Last updated: 25 Jul '11, 10:11

powered by OSQA