- From: Chimezie Ogbuji <ogbujic@ccf.org>
- Date: Fri, 14 Sep 2007 08:40:00 -0400
- To: "Alan Ruttenberg" <alanruttenberg@gmail.com>
- cc: public-semweb-lifesci@w3.org, markov@mpiz-koeln.mpg.de, groscurt@mpiz-koeln.mpg.de, schoof@mpiz-koeln.mpg.de, "chris mungall" <cjm@fruitfly.org>
On Fri, 2007-09-14 at 05:04 -0400, Alan Ruttenberg wrote: > > In my opinion SQL (with entailments pre-computed) still turns out > > to be a far superior choice to existing semantic web technology - > > I'd be interested to see the SPARQL equivalents of the following > > queries: > > http://wiki.geneontology.org/index.php/Example_Queries > FYI: you don't necessarily need entailment to compute some of those transitive traversals (at least if your RDF query language supports functional recursion: like Versa [1]). I could sketch out examples, but I'm not quite familiar with the corresponding RDF terminology for the queries on that (interesting) list. For instance, you can evaluate ancestor / descendent traversals with functions such as transitive-closure: transitive-closure($listOfURIs,'.. Versa expression ..') [[[ Apply an expression transitively, starting with the given RDF nodes, making sure to avoid circularity. The expression could return nested lists/sets, in which case, every object in the topmost list is searched for a resource terminating the leftmost path in the tree and the found objects are used for the next transitive lookup. ]]] [1] http://www.xml.com/pub/a/2005/07/20/versa.html -- Chimezie Ogbuji Lead Systems Analyst Thoracic and Cardiovascular Surgery Cleveland Clinic Foundation 9500 Euclid Avenue/ W26 Cleveland, Ohio 44195 Office: (216)444-8593 ogbujic@ccf.org =================================== Cleveland Clinic is ranked one of the top hospitals in America by U.S. News & World Report (2007). Visit us online at http://www.clevelandclinic.org for a complete listing of our services, staff and locations. Confidentiality Note: This message is intended for use only by the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Thank you.
Received on Friday, 14 September 2007 12:40:29 UTC