Re: defn of Named Graph

2013-09-27 Thread Pat Hayes
On Sep 24, 2013, at 8:31 AM, Sandro Hawke wrote: On 09/20/2013 04:44 AM, Pat Hayes wrote: On Sep 19, 2013, at 9:52 AM, Sandro Hawke wrote: So, I hereby propose we give up on all this until after we solve the change-over-time problem for RDF. Well, I do have other things to

Re: defn of Named Graph

2013-09-27 Thread Jeremy J Carroll
I feel that Sandro's text has asked the WG for too much and is motivated by the insoluble use case of dealing with time. A shorter proposal, motivated by other intensional use cases, such as Pat's signing, but any involving stating some intent about a graph, rather than some mathematical

Re: defn of Named Graph

2013-09-27 Thread Sandro Hawke
Pat Hayes pha...@ihmc.us wrote: On Sep 24, 2013, at 8:31 AM, Sandro Hawke wrote: On 09/20/2013 04:44 AM, Pat Hayes wrote: On Sep 19, 2013, at 9:52 AM, Sandro Hawke wrote: So, I hereby propose we give up on all this until after we solve the change-over-time problem for RDF.

Re: defn of Named Graph

2013-09-27 Thread Sandro Hawke
Jeremy J Carroll j...@syapse.com wrote: I feel that Sandro's text has asked the WG for too much and is motivated by the insoluble use case of dealing with time. A shorter proposal, motivated by other intensional use cases, such as Pat's signing, but any involving stating some intent about a

Re: defn of Named Graph

2013-09-27 Thread Jeremy J Carroll
I also wish to use dcterms:issued Adam and Bettie issued the graph for different purposes on different dates, and the issued property is really about the named graph and not about the graph per se. Jeremy J Carroll Principal Architect Syapse, Inc. On Sep 27, 2013, at 2:34 PM, Sandro Hawke

Re: defn of Named Graph

2013-09-27 Thread Sandro Hawke
Jeremy J Carroll j...@syapse.com wrote: I also wish to use dcterms:issued Adam and Bettie issued the graph for different purposes on different dates, and the issued property is really about the named graph and not about the graph per se. Okay, so it's enough to use creator and date. Adam

Re: defn of Named Graph

2013-09-24 Thread Sandro Hawke
On 09/20/2013 04:44 AM, Pat Hayes wrote: On Sep 19, 2013, at 9:52 AM, Sandro Hawke wrote: So, I hereby propose we give up on all this until after we solve the change-over-time problem for RDF. Well, I do have other things to do in my life Sorry Hopefully you at least

Re: defn of Named Graph

2013-09-24 Thread Dan Brickley
On 24 September 2013 14:31, Sandro Hawke san...@w3.org wrote: On 09/20/2013 04:44 AM, Pat Hayes wrote: On Sep 19, 2013, at 9:52 AM, Sandro Hawke wrote: So, I hereby propose we give up on all this until after we solve the change-over-time problem for RDF. Well, I do have other

Re: defn of Named Graph

2013-09-24 Thread Sandro Hawke
On 09/24/2013 09:38 AM, Dan Brickley wrote: Do you have a use case (involving RDF on computers) for having different properties on different graphs (which happen to have the same triples), and which does not involve graphs changing over time? (jumping in here...) Related to change over time,

Re: defn of Named Graph

2013-09-24 Thread Dan Brickley
On 24 September 2013 14:51, Sandro Hawke san...@w3.org wrote: On 09/24/2013 09:38 AM, Dan Brickley wrote: Do you have a use case (involving RDF on computers) for having different properties on different graphs (which happen to have the same triples), and which does not involve graphs

The Movie of the Book: Re: defn of Named Graph

2013-09-24 Thread Jeremy J Carroll
On Sep 24, 2013, at 6:31 AM, Sandro Hawke san...@w3.org wrote: I'm now confident that you and I (and Jeremy) agree the problem we're trying to solve in this thread is this: people seem to want to have different properties on one graph than on another, even when the graphs happen to have

Re: The Movie of the Book: Re: defn of Named Graph

2013-09-24 Thread Sandro Hawke
On 09/24/2013 01:07 PM, Jeremy J Carroll wrote: On Sep 24, 2013, at 6:31 AM, Sandro Hawke san...@w3.org mailto:san...@w3.org wrote: I'm now confident that you and I (and Jeremy) agree the problem we're trying to solve in this thread is this: people seem to want to have different properties

Re: The Movie of the Book: Re: defn of Named Graph

2013-09-24 Thread Dan Brickley
On 24 September 2013 19:15, Sandro Hawke san...@w3.org wrote: So let's go back to that.Give me an example that shows three things: the triples happen to be the same, the metadata must remain distinct, and there is no change over time.As I think about it now, I'm beginning to think

Re: The Movie of the Book: Re: defn of Named Graph

2013-09-24 Thread Sandro Hawke
On 09/24/2013 05:32 PM, Dan Brickley wrote: On 24 September 2013 19:15, Sandro Hawke san...@w3.org wrote: So let's go back to that.Give me an example that shows three things: the triples happen to be the same, the metadata must remain distinct, and there is no change over time.As I

Re: defn of Named Graph

2013-09-23 Thread Jeremy J Carroll
On Sep 22, 2013, at 5:11 PM, Pat Hayes pha...@ihmc.us wrote: RDF datasets may be used to express RDF content. When used in this way, a dataset should be understood to have at least the same content as its default graph. Note however that replacing the default graph of a dataset by a

Re: defn of Named Graph

2013-09-22 Thread Pat Hayes
On Sep 20, 2013, at 10:54 AM, Jeremy J Carroll wrote: On Sep 20, 2013, at 2:45 AM, Pat Hayes pha...@ihmc.us wrote: In the original paper that Jeremy and I (and Chris Bizer) co-wrote, we defined a named graph to be a name, graph pair, so the statement GRAPH x:g1 { :a :b :c .}

Re: defn of Named Graph

2013-09-20 Thread Pat Hayes
On Sep 19, 2013, at 11:25 AM, Gregg Reynolds wrote: On Wed, Sep 18, 2013 at 1:33 PM, Jeremy J Carroll j...@syapse.com wrote: Something of an aside … On Sep 18, 2013, at 1:29 AM, Gregg Reynolds d...@mobileink.com wrote: The suggestion that a pair of mathematical entities with exactly

Re: defn of Named Graph

2013-09-20 Thread Pat Hayes
On Sep 19, 2013, at 9:52 AM, Sandro Hawke wrote: So, I hereby propose we give up on all this until after we solve the change-over-time problem for RDF. Well, I do have other things to do in my life, but I think this is a very bad stance to take. The change-over-time-problem is

Re: defn of Named Graph

2013-09-20 Thread Pat Hayes
On Sep 19, 2013, at 10:42 AM, Gregg Reynolds wrote: On Wed, Sep 18, 2013 at 9:37 AM, Sandro Hawke san...@w3.org wrote: On 09/18/2013 04:29 AM, Gregg Reynolds wrote: Names Graphs also provide a useful semantics for RDF Datasets. Some RDF Datasets, hereafter NG Datasets, have this

Re: defn of Named Graph

2013-09-20 Thread Jeremy J Carroll
On Sep 20, 2013, at 2:45 AM, Pat Hayes pha...@ihmc.us wrote: In the original paper that Jeremy and I (and Chris Bizer) co-wrote, we defined a named graph to be a name, graph pair, so the statement GRAPH x:g1 { :a :b :c .} would mean that the IRI x:g1 denotes the pair x:g1, { :a :b :c

Re: defn of Named Graph

2013-09-19 Thread Gregg Reynolds
On Wed, Sep 18, 2013 at 1:33 PM, Jeremy J Carroll j...@syapse.com wrote: Something of an aside … On Sep 18, 2013, at 1:29 AM, Gregg Reynolds d...@mobileink.com wrote: The suggestion that a pair of mathematical entities with exactly the same extension are not equal doesn't help - it reads

Re: defn of Named Graph

2013-09-19 Thread Sandro Hawke
On 09/19/2013 04:01 AM, Dan Brickley wrote: On 18 September 2013 19:33, Jeremy J Carroll j...@syapse.com mailto:j...@syapse.com wrote: Something of an aside … On Sep 18, 2013, at 1:29 AM, Gregg Reynolds d...@mobileink.com mailto:d...@mobileink.com wrote: The suggestion

Re: defn of Named Graph

2013-09-19 Thread Jeremy J Carroll
Gregg I am sorry for the overly personal attack. I read with interest the latter part of your post concerning metonymy, which did seem to contrast with my (perhaps mis)reading of the discussion of mathematical functions, with or without a name. I found it strange that Sandro responded to your

Re: defn of Named Graph

2013-09-19 Thread Jeremy J Carroll
I enjoyed this rebuttal On Sep 19, 2013, at 11:25 AM, Gregg Reynolds d...@mobileink.com wrote: If you see your contemporary mathematical concept in a tenth century diagram, its because you put it there. It's a variation on the Fallacy of Anachronism.

Re: defn of Named Graph

2013-09-19 Thread Gregg Reynolds
On Thu, Sep 19, 2013 at 2:35 PM, Jeremy J Carroll j...@syapse.com wrote: Gregg I am sorry for the overly personal attack. Very gracious of you. Apology gladly accepted. I read with interest the latter part of your post concerning metonymy, which did seem to contrast with my (perhaps

Re: defn of Named Graph

2013-09-18 Thread Pat Hayes
On Sep 17, 2013, at 2:51 PM, Sandro Hawke wrote: Following that epiphany I had at the end of my last email, here's what I'd love to see everyone agree on, more or less: Yes, but I'd like to expound it slightly differently. But basically, I like this. == Named Graphs An RDF Named

Re: defn of Named Graph

2013-09-18 Thread Gregg Reynolds
On Tue, Sep 17, 2013 at 4:51 PM, Sandro Hawke san...@w3.org wrote: Following that epiphany I had at the end of my last email, here's what I'd love to see everyone agree on, more or less: == Named Graphs An RDF Named Graph is similar to an RDF Graph, but different in one important way.

Re: defn of Named Graph

2013-09-18 Thread Dan Brickley
Interesting thread. ...a named graph is a concrete thing which exemplifies the same abstract structure as an RDF graph. Or, put another way, the RDF graph is the syntactic structure of the actual object that is the named graph. Just like a parse tree of a sentence written in a book. ... works

Re: defn of Named Graph

2013-09-18 Thread Sandro Hawke
On 09/18/2013 04:29 AM, Gregg Reynolds wrote: On Tue, Sep 17, 2013 at 4:51 PM, Sandro Hawke san...@w3.org mailto:san...@w3.org wrote: Following that epiphany I had at the end of my last email, here's what I'd love to see everyone agree on, more or less: == Named Graphs An

defn of Named Graph

2013-09-17 Thread Sandro Hawke
Following that epiphany I had at the end of my last email, here's what I'd love to see everyone agree on, more or less: == Named Graphs An RDF Named Graph is similar to an RDF Graph, but different in one important way.Because RDF Graphs are defined as being mathematical sets of RDF