- From: Pat Hayes <phayes@ihmc.us>
- Date: Sun, 5 Sep 2010 20:31:43 -0500
- To: Bob MacGregor <bob.macgregor@gmail.com>
- Cc: Adrian Walker <adriandwalker@gmail.com>, semantic-web@w3.org, public-sparql-dev@w3.org
On Sep 5, 2010, at 4:48 PM, Bob MacGregor wrote: > My personal interest is in a query language for RDF that's easy to use, and, among other things, > has a negation operator that is intuitive. Id be interested to know what you consider to be intuitive here. Is negation by failure intuitive for most Web sources? Do you routinely conclude, from a failure to find a sentence asserted on a website, that it is false? Pat Hayes > If SPARQL 1.1 adds a negation operator, that is good to know. > > I would be interested to learn of a datalog-with-negation implemented by translating to SPARQL, > since datalog and its variants is IMO intuitive. Are the results that show a mapping between > a datalog variant and SPARQL just papers, or has someone actually implemented a Datalog-like > front end that translates to SPARQL? I'd like to see that. Note: Axel cites a paper that translates > in the other direction -- that's not what I'm after. > > - Bob ------------------------------------------------------------ IHMC (850)434 8903 or (650)494 3973 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32502 (850)291 0667 mobile phayesAT-SIGNihmc.us http://www.ihmc.us/users/phayes
Received on Monday, 6 September 2010 01:32:15 UTC