Re: Subjects as Literals

2010-07-06 Thread Toby Inkster
On Mon, 5 Jul 2010 17:43:17 -0500 Pat Hayes pha...@ihmc.us wrote: Well, nobody is suggesting allowing literals as predicates (although in fact the RDF semantics would easily extend to this usage, if required, and the analogous structures are allowed, and do have genuine use cases, in

Re: Subjects as Literals

2010-07-06 Thread Dan Brickley
On Tue, Jul 6, 2010 at 12:40 AM, Hugh Glaser h...@ecs.soton.ac.uk wrote: Hi Sampo. I venture in again... I have much enjoyed the interchanges, and they have illuminated a number of cultural differences for me, which have helped me understand why some people have disagree with things that seem

Re: Subjects as Literals

2010-07-06 Thread Danny Ayers
I've been studiously avoiding this rat king of a thread, but just on this suggestion: On 2 July 2010 11:16, Reto Bachmann-Gmuer reto.bachm...@trialox.org wrote: ... Serialization formats could support Jo :nameOf :Jo as a shortcut for [ owl:sameAs Jo; :nameOf :Jo] and a store could

Re: Subjects as Literals

2010-07-06 Thread Robert Fuller
+1 On 06/07/10 09:23, Danny Ayers wrote: I've been studiously avoiding this rat king of a thread, but just on this suggestion: On 2 July 2010 11:16, Reto Bachmann-Gmuerreto.bachm...@trialox.org wrote: ... Serialization formats could support Jo :nameOf :Jo as a shortcut for [ owl:sameAs

Re: Subjects as Literals

2010-07-06 Thread Henry Story
On 6 Jul 2010, at 09:19, Dan Brickley wrote: On Tue, Jul 6, 2010 at 12:40 AM, Hugh Glaser h...@ecs.soton.ac.uk wrote: Hi Sampo. I venture in again... I have much enjoyed the interchanges, and they have illuminated a number of cultural differences for me, which have helped me understand why

RE: [ANN] Uberblic.org V1.0 - data consolidation for the web of data

2010-07-06 Thread Georgi Kobilarov
Hi Kingsley, Congrats re. 1.0 release! Thanks! One thing, please confirm the situation re. Uberblic and DBpedia at the ontology level, are they 1:1 or do you have an alternative ontology for Uberlic. No, Uberblic and DBpedia ontology are not 1:1. The Uberblic ontology started quite

Re: Subjects as Literals

2010-07-06 Thread Nathan
Danny Ayers wrote: I've been studiously avoiding this rat king of a thread, but just on this suggestion: On 2 July 2010 11:16, Reto Bachmann-Gmuer reto.bachm...@trialox.org wrote: ... Serialization formats could support Jo :nameOf :Jo as a shortcut for [ owl:sameAs Jo; :nameOf :Jo] and a

RE: Subjects as Literals

2010-07-06 Thread Michael Schneider
Toby Inkster: On Mon, 5 Jul 2010 17:43:17 -0500 Pat Hayes pha...@ihmc.us wrote: Well, nobody is suggesting allowing literals as predicates (although in fact the RDF semantics would easily extend to this usage, if required, and the analogous structures are allowed, and do have genuine use

Re: [ANN] Uberblic.org V1.0 - data consolidation for the web of data

2010-07-06 Thread Kingsley Idehen
Georgi Kobilarov wrote: Hi Kingsley, Congrats re. 1.0 release! Thanks! One thing, please confirm the situation re. Uberblic and DBpedia at the ontology level, are they 1:1 or do you have an alternative ontology for Uberlic. No, Uberblic and DBpedia ontology are not

[ANN] Major update of Lexvo.org

2010-07-06 Thread Gerard de Melo
Hi everyone, We'd like to announce a major update of Lexvo.org [1], a site that brings information about languages, words, characters, and other human language- related entities to the LOD cloud. Lexvo.org adds a new perspective to the Web of Data by exposing how everything in our world is

RE: Subjects as Literals

2010-07-06 Thread Michael Schneider
Toby Inkster wrote: On Tue, 6 Jul 2010 14:03:19 +0200 Michael Schneider schn...@fzi.de wrote: So, if :s lit :o . must not have a semantic meaning, what about lit rdf:type rdf:Property . ? As, according to what you say above, you are willing to allow for literals in subject

RDF Extensibility

2010-07-06 Thread Jiří Procházka
On 07/06/2010 03:35 PM, Toby Inkster wrote: On Tue, 6 Jul 2010 14:03:19 +0200 Michael Schneider schn...@fzi.de wrote: So, if :s lit :o . must not have a semantic meaning, what about lit rdf:type rdf:Property . ? As, according to what you say above, you are willing to allow

Re: RDF Extensibility

2010-07-06 Thread Dan Brickley
2010/7/6 Jiří Procházka oji...@gmail.com: On 07/06/2010 03:35 PM, Toby Inkster wrote: On Tue, 6 Jul 2010 14:03:19 +0200 Michael Schneider schn...@fzi.de wrote: So, if     :s lit :o . must not have a semantic meaning, what about     lit rdf:type rdf:Property . ? As, according to what

Re: RDF Extensibility

2010-07-06 Thread Ian Davis
2010/7/6 Dan Brickley dan...@danbri.org: 2010/7/6 Jiří Procházka oji...@gmail.com: It would have a meaning. It would just be a false statement. The same as the following is a false statement:       foaf:Person a rdf:Property . Why do you think so? I believe it is valid RDF and even valid

RE: RDF Extensibility

2010-07-06 Thread Michael Schneider
Dan Brickley wrote: 2010/7/6 Jiří Procházka oji...@gmail.com: On 07/06/2010 03:35 PM, Toby Inkster wrote: It would have a meaning. It would just be a false statement. The same as the following is a false statement:       foaf:Person a rdf:Property . Why do you think so? I believe it is

Re: Subjects as Literals

2010-07-06 Thread Ivan Mikhailov
After 7 days of discussion, are there any volunteers to implement this proposal? Or you specify the wish and I should implement it (and Kingsley should pay) for an unclear purpose? Sorry, no. I should remind one more time: without two scheduled implementations right now and two complete

Re: Subjects as Literals

2010-07-06 Thread Nathan
Ivan Mikhailov wrote: After 7 days of discussion, are there any volunteers to implement this proposal? Or you specify the wish and I should implement it (and Kingsley should pay) for an unclear purpose? Sorry, no. I should remind one more time: without two scheduled implementations right now

Re: Subjects as Literals

2010-07-06 Thread Toby Inkster
On Tue, 6 Jul 2010 16:30:06 +0200 Michael Schneider schn...@fzi.de wrote: What do you mean by false statement? False in the same sense that this is false: http://danbri.org/foaf.rdf#danbri foaf:name Barry Chuckle . Whether it is provably false by an automated agent is

Re: Subjects as Literals

2010-07-06 Thread Henry Story
On 6 Jul 2010, at 14:03, Michael Schneider wrote: Toby Inkster: On Mon, 5 Jul 2010 17:43:17 -0500 Pat Hayes pha...@ihmc.us wrote: Well, nobody is suggesting allowing literals as predicates (although in fact the RDF semantics would easily extend to this usage, if required, and the

Re: Subjects as Literals

2010-07-06 Thread Antoine Zimmermann
Ivan, all, Le 06/07/2010 18:00, Ivan Mikhailov a écrit : After 7 days of discussion, are there any volunteers to implement this proposal? Or you specify the wish and I should implement it (and Kingsley should pay) for an unclear purpose? Sorry, no. Not only there are volunteers to

Re: Subjects as Literals

2010-07-06 Thread Antoine Zimmermann
I'd like to apologize in advance for being sarcastic, especially since I have really nothing against Henry... ;) Le 06/07/2010 19:45, Henry Story a écrit : This would be possible to say. The problem is that there would be no way on earth that anyone could come to an agreement as to what kind

Re: Subjects as Literals

2010-07-06 Thread Pat Hayes
On Jul 6, 2010, at 2:05 AM, Toby Inkster wrote: On Mon, 5 Jul 2010 17:43:17 -0500 Pat Hayes pha...@ihmc.us wrote: Well, nobody is suggesting allowing literals as predicates (although in fact the RDF semantics would easily extend to this usage, if required, and the analogous structures are

RE: Subjects as Literals

2010-07-06 Thread Michael Schneider
+1 The fact that basically, all the upper levels of the Semantic Web layer cake are not based on RDF but on generalised RDF (see also my list of concrete citations at [1]) makes it, in my humble opinion, essentially mandatory for an RDF working group to standardize generalized RDF,

Re: Subjects as Literals

2010-07-06 Thread Nathan
Pat Hayes wrote: However, before I lose any more of my SW friends, let me say at once that I am NOT arguing for this change to RDF. so after hundreds of emails, I have to ask - what (the hell) defines RDF? I've read that 'The RDF Semantics as stated works fine with triples which have any

Re: RDF Extensibility

2010-07-06 Thread Pat Hayes
On Jul 6, 2010, at 9:34 AM, Jiří Procházka wrote: On 07/06/2010 03:35 PM, Toby Inkster wrote: On Tue, 6 Jul 2010 14:03:19 +0200 Michael Schneider schn...@fzi.de wrote: So, if :s lit :o . must not have a semantic meaning, what about lit rdf:type rdf:Property . ? As, according to

Re: Subjects as Literals

2010-07-06 Thread Yves Raimond
Hello! On Tue, Jul 6, 2010 at 10:02 PM, Nathan nat...@webr3.org wrote: Pat Hayes wrote: However, before I lose any more of my SW friends, let me say at once that I am NOT arguing for this change to RDF. so after hundreds of emails, I have to ask - what (the hell) defines RDF? I've read

Re: RDF Extensibility

2010-07-06 Thread Pat Hayes
On Jul 6, 2010, at 10:03 AM, Dan Brickley wrote: 2010/7/6 Jiří Procházka oji...@gmail.com: On 07/06/2010 03:35 PM, Toby Inkster wrote: On Tue, 6 Jul 2010 14:03:19 +0200 Michael Schneider schn...@fzi.de wrote: So, if :s lit :o . must not have a semantic meaning, what about lit

Re: Subjects as Literals

2010-07-06 Thread Pat Hayes
On Jul 6, 2010, at 1:45 PM, Henry Story wrote: On 6 Jul 2010, at 14:03, Michael Schneider wrote: Toby Inkster: On Mon, 5 Jul 2010 17:43:17 -0500 Pat Hayes pha...@ihmc.us wrote: Well, nobody is suggesting allowing literals as predicates (although in fact the RDF semantics would easily

Re: Subjects as Literals

2010-07-06 Thread Dan Brickley
On Tue, Jul 6, 2010 at 11:17 PM, Pat Hayes pha...@ihmc.us wrote: [...] This is the canonical way to find it's meaning, and is the initial procedure we should use to arbitrate between competing understandings of its meaning. Whoo, I doubt if that idea is going to fly. I sincerely hope not.

Re: Subjects as Literals

2010-07-06 Thread Antoine Zimmermann
So to clarify a bit: A serialisation is just a way to write down an RDF document in a computer. A serialisation of RDF must respect the abstract RDF syntax, which forbids literals in subject position. If the serialisation allows literals as subject, it is not a serialisation of RDF but it

Re: Subjects as Literals

2010-07-06 Thread Nathan
Thanks for the clarification Antione, I'll take one of those generalised rdf's to go when available, can I pre order? Best, Nathan Antoine Zimmermann wrote: So to clarify a bit: A serialisation is just a way to write down an RDF document in a computer. A serialisation of RDF must respect

RE: Subjects as Literals

2010-07-06 Thread Michael Schneider
Nathan wrote: Sent: Tuesday, July 06, 2010 11:02 PM To: Pat Hayes Cc: Toby Inkster; Linked Data community; Semantic Web Subject: Re: Subjects as Literals Pat Hayes wrote: However, before I lose any more of my SW friends, let me say at once that I am NOT arguing for this change to RDF. so

Re: Subjects as Literals

2010-07-06 Thread Henry Story
On 6 Jul 2010, at 21:57, Antoine Zimmermann wrote: I'd like to apologize in advance for being sarcastic, especially since I have really nothing against Henry... ;) Le 06/07/2010 19:45, Henry Story a écrit : This would be possible to say. The problem is that there would be no way on

Re: Subjects as Literals

2010-07-06 Thread Hugh Glaser
On 06/07/2010 09:44, Henry Story henry.st...@gmail.com wrote: On 6 Jul 2010, at 09:19, Dan Brickley wrote: On Tue, Jul 6, 2010 at 12:40 AM, Hugh Glaser h...@ecs.soton.ac.uk wrote: Hi Sampo. I venture in again... I have much enjoyed the interchanges, and they have illuminated a number

Re: Subjects as Literals

2010-07-06 Thread David Booth
On Tue, 2010-07-06 at 20:45 +0200, Henry Story wrote: [ . . . ] foaf:knows a rdf:Property . Well we can dereference foaf:knows to find out what it means. This is the canonical way to find it's meaning, and is the initial procedure we should use to arbitrate between competing understandings

Re: Subjects as Literals

2010-07-06 Thread Jeremy Carroll
On 7/5/2010 3:40 PM, Hugh Glaser wrote: A particular problem in this realm has been characterised as S-P-O v. O-R-O and I suspect that this reflects a Semantic Web/Linked Data cultural difference, SNIP You see this as a problem of having a literal in the subject position. I might equally

Re: Subjects as Literals

2010-07-06 Thread Sampo Syreeni
On 2010-07-05, Pat Hayes wrote: This objection strikes me as completely wrong-headed. Of course literals are machine processable. What precisely does Sampo as a plain literal mean to a computer? Do give me the fullest semantics you can. As in, is it the Finnish Sampo as in me, my neighbour,

Linked Data Spec (was Re: Subjects as Literals)

2010-07-06 Thread Sandro Hawke
On Tue, 2010-07-06 at 22:23 -0400, David Booth wrote: On Tue, 2010-07-06 at 20:45 +0200, Henry Story wrote: [ . . . ] foaf:knows a rdf:Property . Well we can dereference foaf:knows to find out what it means. This is the canonical way to find it's meaning, and is the initial procedure

Capturing the discussion (RE: Subjects as Literals)

2010-07-06 Thread Sandro Hawke
Would anyone be willing to try to capture the results of this thread in a page or two of consensus (neutral point-of-view) text that would explain the situation to at least a majority of the folks who've jumped in here with misunderstandings? To my reading, you (Michael) and Antoine are

Re: Subjects as Literals

2010-07-06 Thread Ivan Mikhailov
Antoine, all, On Tue, 2010-07-06 at 20:54 +0100, Antoine Zimmermann wrote: Not only there are volunteers to implement tools which allow literals as subjects, but there are already implementations out there. As an example, take Ivan Herman's OWL 2 RL reasoner [1]. You can put triples with

Re: Subjects as Literals

2010-07-06 Thread Danny Ayers
On 6 July 2010 13:34, Nathan nat...@webr3.org wrote: Danny Ayers wrote: :Jo rdfs:value Jo together with :Jo rdf:type rdfs:Literal ? 1: is there and rdfs:value? (rdf:value) My mistake, it is rdf:value 2: I would *love* to see rdf:value with a usable tight definition that everybody

FYI: Blog on HTTP Link header and host-wide well-known URI-s, and Linked Data

2010-07-06 Thread Ivan Herman
This is just to draw attention on Jonathan Rees' blog on these subjects: http://www.w3.org/QA/2010/07/new_opportunities_for_linked_d.html Ivan (the go-between:-) Ivan Herman, W3C Semantic Web Activity Lead Home: http://www.w3.org/People/Ivan/ mobile: +31-641044153 PGP Key: