Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-02 Thread Haijie.Peng
On 2010/7/1 22:35, Kingsley Idehen wrote: Yves Raimond wrote: Hello Kingsley! [snip] IMHO an emphatic NO. RDF is about constructing structured descriptions where Subjects have Identifiers in the form of Name References (which may or many resolve to Structured Representations of Referents

Re: Subjects as Literals

2010-07-01 Thread Axel Rauschmayer
How about internationalization? If the subject is a literal, how would translations be associated? On Jul 1, 2010, at 5:14 , Pat Hayes wrote: On Jun 30, 2010, at 8:14 PM, Ross Singer wrote: I suppose my questions here would be: 1) What's the use case of a literal as subject statement

Re: Subjects as Literals

2010-07-01 Thread Sandro Hawke
for graph naming, the economic cost of also doing this becomes quite small.) There's also a school of opposition here which is about aligning RDF subjects with Object-Oriented Programming's objects. For that school, literals as subjects could be a real problem. But I'm not sure anyone takes that school

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Henry Story
On 30 Jun 2010, at 21:09, Pat Hayes wrote: For example I've heard people saying that it encourages bad 'linked data' practise by using examples like { 'London' a x:Place } - whereas I'd immediately counter with { x:London a 'Place' }. Surely all of the subjects as literals arguments

Re: Subjects as Literals

2010-07-01 Thread Bob Ferris
Hello everybody, I think the main issues are already discussed. Hence, here are some summarized notes of my thoughts: 1. We shouldn't propagate that a user (always a machine or human beeing) has to go this way and not the other one. Leaving this decision by the user, leads to more user

Re: Subjects as Literals

2010-07-01 Thread Henry Story
+1 to the points below. I think one should point out that rdf semantics allows them, and that in an open world they just can't be excluded. In N3 literals as subjects are often used. And the cwm repository is a good place to look for examples @prefix log: http://www.w3.org/2000/10/swap/log

Re: Subjects as Literals

2010-07-01 Thread Steve Harris
On 2010-07-01, at 03:20, Hugh Glaser wrote: In fact, a question I would like to ask, but suspect that noone who can answer it is still reading this thread ( :-) ): For those who implement RDF stores, do you have to do something special to reject RDF that has literals as subject? In my

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Kingsley Idehen
Yves Raimond wrote: Hello Kingsley! [snip] IMHO an emphatic NO. RDF is about constructing structured descriptions where Subjects have Identifiers in the form of Name References (which may or many resolve to Structured Representations of Referents carried or borne by Descriptor

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Kingsley Idehen
that messes can't happen when all you are doing is describing structures in an open-world setting. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Henry Story
On 1 Jul 2010, at 16:35, Kingsley Idehen wrote: Yves Raimond wrote: Hello Kingsley! [snip] IMHO an emphatic NO. RDF is about constructing structured descriptions where Subjects have Identifiers in the form of Name References (which may or many resolve to Structured

Show me the money - (was Subjects as Literals)

2010-07-01 Thread Jeremy Carroll
I am still not hearing any argument to justify the costs of literals as subjects I have loads and loads of code, both open source and commercial that assumes throughout that a node in a subject position is not a literal, and a node in a predicate position is a URI node. Of course

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Michael Hausenblas
I am still not hearing any argument to justify the costs of literals as subjects. +1 Cheers, Michael -- Dr. Michael Hausenblas LiDRC - Linked Data Research Centre DERI - Digital Enterprise Research Institute NUIG - National University of Ireland, Galway Ireland, Europe Tel. +353 91

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Henry Story
the costs of literals as subjects I have loads and loads of code, both open source and commercial that assumes throughout that a node in a subject position is not a literal, and a node in a predicate position is a URI node. but is that really correct? Because bnodes can be names for literals

Re: Subjects as Literals

2010-07-01 Thread Stephane Fellah
Hi, I just want to throw my 2 cents in this discussion. I posted a comment in October 2004 related to Smart Literalproposal in Jena Discussion Group. http://tech.groups.yahoo.com/group/jena-dev/message/11581 Best regards Stephane Fellah smartRealm LLC

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread John Erickson
RE getting a full list of the benefits, surely if it's being discussed here, Literals as Subjects must be *somebody's* Real(tm) Problem and the benefits are inherent in its solution? And if it isn't, um, why is it being discussed here? ;) On Thu, Jul 1, 2010 at 11:46 AM, Henry Story henry.st

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Nathan
Carroll wrote: I am still not hearing any argument to justify the costs of literals as subjects I have loads and loads of code, both open source and commercial that assumes throughout that a node in a subject position is not a literal, and a node in a predicate position is a URI node

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Yves Raimond
Hello! IMHO an emphatic NO. RDF is about constructing structured descriptions where Subjects have Identifiers in the form of Name References (which may or many resolve to Structured Representations of Referents carried or borne by Descriptor Docs/Resources). An Identifier != Literal. If

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Dan Brickley
On Thu, Jul 1, 2010 at 5:38 PM, Jeremy Carroll jer...@topquadrant.com wrote: I am still not hearing any argument to justify the costs of literals as subjects I have loads and loads of code, both open source and commercial that assumes throughout that a node in a subject position

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Kingsley Idehen
Henry Story wrote: On 1 Jul 2010, at 16:35, Kingsley Idehen wrote: Yves Raimond wrote: Hello Kingsley! [snip] IMHO an emphatic NO. RDF is about constructing structured descriptions where Subjects have Identifiers in the form of Name References (which may or many resolve

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Robert Fuller
position are currently not of any interest to us, we simply discard them during a filtering phase. Kind regards, Robert On 01/07/10 17:05, John Erickson wrote: RE getting a full list of the benefits, surely if it's being discussed here, Literals as Subjects must be *somebody's* Real(tm) Problem

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Yves Raimond
at creation time. bif:contains doesn't exist in pure triple form etc.. Why couldn't it? For example, you may want to express exactly what triple lead you to give a particular result, and within that scope you may end up having to write: Brickley bif:contains ckley in RDF. Forbidding literals

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Dan Brickley
On Thu, Jul 1, 2010 at 6:29 PM, Sandro Hawke san...@w3.org wrote: On Thu, 2010-07-01 at 17:10 +0100, Nathan wrote: In all honesty, if this doesn't happen, I personally will have no choice but to move to N3 for the bulk of things, and hope for other serializations of N3 to come along. RIF

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Nathan
Sandro Hawke wrote: On Thu, 2010-07-01 at 17:10 +0100, Nathan wrote: In all honesty, if this doesn't happen, I personally will have no choice but to move to N3 for the bulk of things, and hope for other serializations of N3 to come along. RIF (which became a W3C Recommendation last week) is

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Kingsley Idehen
Yves Raimond wrote: Hello! IMHO an emphatic NO. RDF is about constructing structured descriptions where Subjects have Identifiers in the form of Name References (which may or many resolve to Structured Representations of Referents carried or borne by Descriptor Docs/Resources). An

Typo Fix: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Kingsley Idehen
Kingsley Idehen wrote: Yves Raimond wrote: Hello! IMHO an emphatic NO. RDF is about constructing structured descriptions where Subjects have Identifiers in the form of Name References (which may or many resolve to Structured Representations of Referents carried or borne by Descriptor

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Yves Raimond
as [1]. No? It just seems that [2] is a more concise way of writing things, and it is conceptually cleaner. I definitely agree... For my thesis work, I had to store quite a lot of signal processing computations in RDF, and had to hack a few triple stores (mainly SWI's one) to handle literals

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Kingsley Idehen
- :( Jeremy Carroll wrote: I am still not hearing any argument to justify the costs of literals as subjects I have loads and loads of code, both open source and commercial that assumes throughout that a node in a subject position is not a literal, and a node in a predicate position

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Yves Raimond
predicate had been triggered once, you would just directly match against the cached version in further queries. Hence, processing time-- and $++ :) Cheers, y On 1 Jul 2010 16:37, Jeremy Carroll jer...@topquadrant.com wrote: I am still not hearing any argument to justify the costs of literals

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Yves Raimond
Or, an even simpler use-case: storing metaphones for strings in a triple store. y On 1 Jul 2010 18:15, Yves Raimond yves.raim...@gmail.com wrote: Hello Jeremy! One example on the top of my head. You have a 'magic predicate' such as Virtuoso bif:contains, but slightly more expansive than that

Lexvo.org - a semiotic approach to Re: Subjects as Literals

2010-07-01 Thread Bernard Vatant
Hi all Re-naming the subject to try and get out of the general noise :) I'm been following this noisy thread with amazement. I've no clear position on the issue, just take the opportunity to attract the attention of the community to the work of Gerard de Melo at Lexvo.org [1] which has been

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Dan Brickley
(cc: list trimmed to LOD list.) On Thu, Jul 1, 2010 at 7:05 PM, Kingsley Idehen kide...@openlinksw.com wrote: Cut long story short. [-cut-] We have an EAV graph model, URIs, triples and a variety of data representation mechanisms. N3 is one of those, and its basically the foundation that

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Jeremy Carroll
On 7/1/2010 10:18 AM, Yves Raimond wrote: Or, an even simpler use-case: storing metaphones for strings in a triple store. OK - and why are these use cases not reasonably easily addressable using the N-ary predicate design pattern with a two place ltieral predicate i.e. instead of

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Bernard Vatant
Hi Dan, Kingsley Happy to see you expose clearly those things that have been also in the corner of my mind since Kingsley started to hammer the EAV drum a while ago. I've been also in training and introduction to RDF insisted on the fact that RDF was somehow just an avatar of the old paradigm

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Jeremy Carroll
On 1 Jul 2010, at 17:38, Jeremy Carroll wrote: I have loads and loads of code, both open source and commercial that assumes throughout that a node in a subject position is not a literal, and a node in a predicate position is a URI node. On 7/1/2010 8:46 AM, Henry Story wrote: but is

Re: Subjects as Literals

2010-07-01 Thread Pat Hayes
On Jul 1, 2010, at 10:12 AM, Robert Sanderson wrote: On Wed, Jun 30, 2010 at 9:14 PM, Pat Hayes pha...@ihmc.us wrote: 3. Dates represented as character strings in some known date format other than XSD can be asserted to be the same as a 'real' date by writing things like 01-02-1481

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Kingsley Idehen
Dan Brickley wrote: (cc: list trimmed to LOD list.) On Thu, Jul 1, 2010 at 7:05 PM, Kingsley Idehen kide...@openlinksw.com wrote: Cut long story short. [-cut-] We have an EAV graph model, URIs, triples and a variety of data representation mechanisms. N3 is one of those, and its

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Tim Finin
On 7/1/10 2:51 PM, Henry Story wrote: ... So just as a matter of interest, imagine a new syntax came along that allowed literals in subject position, could you not write a serialiser for it that turned 123 length 3 . Into _:b owl:sameAs 123; length 3. ? So that really you'd have to

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Henry Story
Social Web Architect http://bblfish.net/ On 1 Jul 2010, at 21:03, Tim Finin wrote: On 7/1/10 2:51 PM, Henry Story wrote: ... So just as a matter of interest, imagine a new syntax came along that allowed literals in subject position, could you not write a serialiser for it that turned

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Jiří Procházka
On 07/01/2010 09:11 PM, Henry Story wrote: Social Web Architect http://bblfish.net/ On 1 Jul 2010, at 21:03, Tim Finin wrote: On 7/1/10 2:51 PM, Henry Story wrote: ... So just as a matter of interest, imagine a new syntax came along that allowed literals in subject position, could

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Jeremy Carroll
On 7/1/2010 11:51 AM, Henry Story wrote: So just as a matter of interest, imagine a new syntax came along that allowed literals in subject position, could you not write a serialiser for it that turned 123 length 3 . Into _:b owl:sameAs 123; length 3. ? I couldn't because chunks of

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Antoine Zimmermann
and for future implementations and future developments of the standards. As Sandro said, RIF is using triples with literals as subjects, as Robert Fuller said (in the LOD list), reasoners are internally inferring triples with literals in subject position, and other use cases (more or less convincing

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Nathan
are starting to implement and for future implementations and future developments of the standards. As Sandro said, RIF is using triples with literals as subjects, as Robert Fuller said (in the LOD list), reasoners are internally inferring triples with literals in subject position, and other use cases

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Kingsley Idehen
Dan Brickley wrote: On Thu, Jul 1, 2010 at 9:02 PM, Kingsley Idehen kide...@openlinksw.com wrote: The sequence went something like this. TimBL Design Issues Note. and SPARQL emergence. Before that, RDF was simply in the dark ages. It's only simple if you weren't there :) You

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Dan Brickley
On Thu, Jul 1, 2010 at 11:35 PM, Kingsley Idehen kide...@openlinksw.com wrote: The sequence went something like this. TimBL Design Issues Note. and SPARQL emergence. Before that, RDF was simply in the dark ages. It's only simple if you weren't there :) You mean you didn't see me lurking

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Paul Gearon
On Thu, Jul 1, 2010 at 1:18 PM, Nathan nat...@webr3.org wrote: snip/ Something else that keeps coming up, a subset of owl always comes in to conversations, obviously owl:sameAs - there was a proposal from one Jim Hendler [1] at a RDF workshop thing to perhaps do something about moving these

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Kingsley Idehen
Dan Brickley wrote: On Thu, Jul 1, 2010 at 11:35 PM, Kingsley Idehen kide...@openlinksw.com wrote: The sequence went something like this. TimBL Design Issues Note. and SPARQL emergence. Before that, RDF was simply in the dark ages. It's only simple if you weren't there :)

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Toby Inkster
On Thu, 01 Jul 2010 13:05:54 -0400 Kingsley Idehen kide...@openlinksw.com wrote: W3C only officially acknowledges RDF/XML as Markup Language for RDF Data Model. I hear this time and time again, but it is not true anymore. XHTML+RDFa 1.0 became a W3C Recommendation in October 2008. It has the

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Kingsley Idehen
Toby Inkster wrote: On Thu, 01 Jul 2010 13:05:54 -0400 Kingsley Idehen kide...@openlinksw.com wrote: W3C only officially acknowledges RDF/XML as Markup Language for RDF Data Model. I hear this time and time again, but it is not true anymore. XHTML+RDFa 1.0 became a W3C

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Pat Hayes
' }. Surely all of the subjects as literals arguments can be countered with 'walk round it', and further good practise could be aided by a few simple notes on best practise for linked data etc. I wholly agree. Allowing literals in subject position in RDF is a no-brainer. (BTW, it would also

Re: Subjects as Literals

2010-07-01 Thread Pat Hayes
On Jul 1, 2010, at 5:34 AM, Steve Harris wrote: On 2010-07-01, at 03:20, Hugh Glaser wrote: In fact, a question I would like to ask, but suspect that noone who can answer it is still reading this thread ( :-) ): For those who implement RDF stores, do you have to do something special to

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Pat Hayes
it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard people saying that it encourages bad 'linked data' practise by using examples like { 'London' a x:Place } - whereas I'd immediately counter with { x:London a 'Place

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Pat Hayes
On Jul 1, 2010, at 2:03 PM, Tim Finin wrote: On 7/1/10 2:51 PM, Henry Story wrote: ... So just as a matter of interest, imagine a new syntax came along that allowed literals in subject position, could you not write a serialiser for it that turned 123 length 3 . Into _:b owl:sameAs 123;

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Nathan
Pat Hayes wrote: On Jul 1, 2010, at 11:18 AM, Yves Raimond wrote: A literal may be the object of an RDF statement, but not the subject or the predicate. Just to clarify, this is a purely syntactic restriction. Allowing literals in subject position would require **no change at all** to the

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Pat Hayes
Hey, guys. It is perfectly fine to use OWL properties in RDF. The RDF specs actually encourage this kind of semantic borrowing, it was always part of the RDF design to have this happen. So no need to have a version of owl:sameAs in the RDFS namespace. Just use the OWL one. Pat On Jul 1,

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Paul Gearon
Hi Pat, On Thu, Jul 1, 2010 at 9:52 PM, Pat Hayes pha...@ihmc.us wrote: Hey, guys. It is perfectly fine to use OWL properties in RDF. The RDF specs actually encourage this kind of semantic borrowing, it was always part of the RDF design to have this happen. So no need to have a version of

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Nathan
Paul Gearon wrote: Hi Pat, On Thu, Jul 1, 2010 at 9:52 PM, Pat Hayes pha...@ihmc.us wrote: Hey, guys. It is perfectly fine to use OWL properties in RDF. The RDF specs actually encourage this kind of semantic borrowing, it was always part of the RDF design to have this happen. So no need to

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Pat Hayes
On Jul 2, 2010, at 12:07 AM, Nathan wrote: Pat Hayes wrote: On Jul 1, 2010, at 11:49 PM, Nathan wrote: Pat Hayes wrote: On Jul 1, 2010, at 11:18 AM, Yves Raimond wrote: A literal may be the object of an RDF statement, but not the subject or the predicate. Just to clarify, this is a

Re: Show me the money - (was Subjects as Literals)

2010-07-01 Thread Pat Hayes
On Jul 2, 2010, at 12:29 AM, Paul Gearon wrote: Hi Pat, On Thu, Jul 1, 2010 at 9:52 PM, Pat Hayes pha...@ihmc.us wrote: Hey, guys. It is perfectly fine to use OWL properties in RDF. The RDF specs actually encourage this kind of semantic borrowing, it was always part of the RDF design to

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-07-01 Thread Nathan
Pat Hayes wrote: On Jul 2, 2010, at 12:07 AM, Nathan wrote: Pat Hayes wrote: On Jul 1, 2010, at 11:49 PM, Nathan wrote: Pat Hayes wrote: On Jul 1, 2010, at 11:18 AM, Yves Raimond wrote: A literal may be the object of an RDF statement, but not the subject or the predicate. Just to clarify,

Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Nathan
that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard people saying that it encourages bad 'linked data' practise by using examples

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Kingsley Idehen
is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard people saying that it encourages bad 'linked data' practise

Re: Subjects as Literals

2010-06-30 Thread David Booth
On Wed, 2010-06-30 at 14:30 -0400, Kingsley Idehen wrote: Nathan wrote: Pat Hayes wrote: [ . . . ] Surely all of the subjects as literals arguments can be countered with 'walk round it', and further good practise could be aided by a few simple notes on best practise for linked data etc

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Pat Hayes
. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard people saying that it encourages bad

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Pat Hayes
in an open-world setting. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard people

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Jiří Procházka
is describing structures in an open-world setting. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Melvin Carvalho
happen when all you are doing is describing structures in an open-world setting. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion

Re: Subjects as Literals

2010-06-30 Thread Kingsley Idehen
David Booth wrote: On Wed, 2010-06-30 at 14:30 -0400, Kingsley Idehen wrote: Nathan wrote: Pat Hayes wrote: [ . . . ] Surely all of the subjects as literals arguments can be countered with 'walk round it', and further good practise could be aided by a few simple notes

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread David Booth
On Wed, 2010-06-30 at 14:09 -0500, Pat Hayes wrote: On Jun 30, 2010, at 11:50 AM, Nathan wrote: [ . . . ] Surely all of the subjects as literals arguments can be countered with 'walk round it', and further good practise could be aided by a few simple notes on best practise for linked

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Axel Rauschmayer
Intuitively, I would expect each subject literal to have a unique identity. For example, I would want to annotate a particular instance of abc and not all literals abc. Wouldn't the latter treatment make literals-as-subjects less appealing? Re. the DL police: I use RDF like a next-generation

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Jeremy Carroll
David Booth wrote: I agree, but at the W3C RDF Next Steps workshop over the weekend, I was surprised to find that there was substantial sentiment *against* having literals as subjects. A straw poll showed that of those at the workshop, this is how people felt about having an RDF working group

Re: Subjects as Literals

2010-06-30 Thread Hugh Glaser
On 30/06/2010 19:55, David Booth da...@dbooth.org wrote: On Wed, 2010-06-30 at 14:30 -0400, Kingsley Idehen wrote: Nathan wrote: Pat Hayes wrote: [ . . . ] Surely all of the subjects as literals arguments can be countered with 'walk round it', and further good practise could be aided

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Nathan
think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard people saying that it encourages bad

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Kingsley Idehen
structures in an open-world setting. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard

Re: Subjects as Literals

2010-06-30 Thread Robert Sanderson
I have to add my 2 cents here. However, if you see some specific harm in permitting statements about literals, please tell us what that harm would be. The specific harm that I would see is that statements would be made about literals given some particular context of that literal, rather than

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Nathan
setting. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general discussion that's going on then? For example I've heard people saying

Re: Subjects as Literals

2010-06-30 Thread Toby Inkster
On Wed, 30 Jun 2010 14:54:47 -0600 Robert Sanderson azarot...@gmail.com wrote: London dcterms:isPartOf England That is true only for the particular London which is the capital of England, not London, Texas, London, Ontario or London in Kiribati. Consider: London dcterms:isPartOf

Re: Subjects as Literals

2010-06-30 Thread Hugh Glaser
Good post - gets to my (mis?)understanding of what is the problem. On 30/06/2010 21:54, Robert Sanderson azarot...@gmail.com wrote: I have to add my 2 cents here. However, if you see some specific harm in permitting statements about literals, please tell us what that harm would be. The

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Toby Inkster
On Wed, 30 Jun 2010 13:18:25 -0700 Jeremy Carroll jer...@topquadrant.com wrote: Here are the reasons I voted this way: - it will mess up RDF/XML No it won't - it will just mean that RDF/XML is only capable of representing a subset of RDF graphs. And guess what? That's already the case. --

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Nathan
Toby Inkster wrote: On Wed, 30 Jun 2010 13:18:25 -0700 Jeremy Carroll jer...@topquadrant.com wrote: Here are the reasons I voted this way: - it will mess up RDF/XML No it won't - it will just mean that RDF/XML is only capable of representing a subset of RDF graphs. And guess what? That's

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Jeremy Carroll
Jiří Procházka wrote: I wonder, when using owl:sameAs or related, to name literals to be able to say other useful thing about them in normal triples (datatype, language, etc) does it break OWL DL yes it does (or any other formalism which is base of some ontology extending RDF semantics)?

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Nathan
Jeremy Carroll wrote: Jiří Procházka wrote: I wonder, when using owl:sameAs or related, to name literals to be able to say other useful thing about them in normal triples (datatype, language, etc) does it break OWL DL yes it does (or any other formalism which is base of some ontology

RE: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Michael Schneider
Jirí Procházka wrote: I wonder, when using owl:sameAs or related, to name literals to be able to say other useful thing about them in normal triples (datatype, language, etc) does it break OWL DL Literals in owl:sameAs axioms are not allowed in OWL (1/2) DL. owl:sameAs can only be used to equate

Re: Subjects as Literals

2010-06-30 Thread Ross Singer
I suppose my questions here would be: 1) What's the use case of a literal as subject statement (besides being an academic exercise)? 2) Does literal as subject make sense in linked data (I ask mainly from a follow your nose perspective) if blank nodes are considered controversial? Question #2

Re: Subjects as Literals

2010-06-30 Thread Hugh Glaser
Great - more crystallization of the problem. On 01/07/2010 02:14, Ross Singer rossfsin...@gmail.com wrote: I suppose my questions here would be: 1) What's the use case of a literal as subject statement (besides being an academic exercise)? I would have thought the same as a use case for a

Re: Subjects as Literals

2010-06-30 Thread Ross Singer
On Wed, Jun 30, 2010 at 9:36 PM, Hugh Glaser h...@ecs.soton.ac.uk wrote: Great - more crystallization of the problem. On 01/07/2010 02:14, Ross Singer rossfsin...@gmail.com wrote: I suppose my questions here would be: 1) What's the use case of a literal as subject statement (besides being

Re: Subjects as Literals

2010-06-30 Thread Hugh Glaser
and convention seems pretty important for the semantic web to work right. So what is the argument for the convention? And what is the thing that is wrong if I do it the other way? That is, tell me what does not work right if I have literals as subjects. Just because you feel like you should do

Re: Subjects as Literals

2010-06-30 Thread Pat Hayes
On Jun 30, 2010, at 2:31 PM, Kingsley Idehen wrote: David Booth wrote: On Wed, 2010-06-30 at 14:30 -0400, Kingsley Idehen wrote: Nathan wrote: Pat Hayes wrote: [ . . . ] Surely all of the subjects as literals arguments can be countered with 'walk round it', and further good practise

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Pat Hayes
On Jun 30, 2010, at 2:52 PM, David Booth wrote: On Wed, 2010-06-30 at 14:09 -0500, Pat Hayes wrote: On Jun 30, 2010, at 11:50 AM, Nathan wrote: [ . . . ] Surely all of the subjects as literals arguments can be countered with 'walk round it', and further good practise could be aided by a few

Re: Subjects as Literals

2010-06-30 Thread Pat Hayes
On Jun 30, 2010, at 8:59 PM, Ross Singer wrote: On Wed, Jun 30, 2010 at 9:36 PM, Hugh Glaser h...@ecs.soton.ac.uk wrote: Great - more crystallization of the problem. On 01/07/2010 02:14, Ross Singer rossfsin...@gmail.com wrote: I suppose my questions here would be: 1) What's the use case

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Pat Hayes
can't happen when all you are doing is describing structures in an open-world setting. But I think the cure is to stop thinking that possible-messes are a problem to be solved. So, there is dung in the road. Walk round it. Could we also apply that to the 'subjects as literals' general

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Pat Hayes
On Jun 30, 2010, at 4:25 PM, Toby Inkster wrote: On Wed, 30 Jun 2010 13:18:25 -0700 Jeremy Carroll jer...@topquadrant.com wrote: Here are the reasons I voted this way: - it will mess up RDF/XML No it won't - it will just mean that RDF/XML is only capable of representing a subset of RDF

Re: Subjects as Literals

2010-06-30 Thread Pat Hayes
On Jun 30, 2010, at 8:14 PM, Ross Singer wrote: I suppose my questions here would be: 1) What's the use case of a literal as subject statement (besides being an academic exercise)? A few off the top of my head. 1. Titles of books, music and other works might have properties such as the

Re: Subjects as Literals, [was Re: The Ordered List Ontology]

2010-06-30 Thread Pat Hayes
On Jun 30, 2010, at 3:12 PM, Axel Rauschmayer wrote: Intuitively, I would expect each subject literal to have a unique identity. For example, I would want to annotate a particular instance of abc and not all literals abc. Wouldn't the latter treatment make literals-as-subjects less

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