Re: Reification alternative

On Wed, 13 Oct 2010 15:02:01 +0200 Mirko wrote: > I try to understand alternatives to reification for Linked Data > publishing, since reification is discouraged. For completeness, as it's not been mentioned, one method would be to publish two files. This is semantically similar to the use of nam

Re: Correct Usage of rdfs:idDefinedBy in Vocabulary Specifications with a Hash-based URI Pattern

On Thu, 30 Sep 2010 09:06:46 +0200 Martin Hepp wrote: > 1. http://purl.org/vso/ns# for the ontology as an abstract artefact > 2. http://purl.org/vso/ns for the syntactical representation of the > ontology (its serialization) > > Shall the rdfs:isDefinedBy statements refer to #1 or #2 ? I tend

Job offer: Data Web developer/content architect at Wolters Kluwer

Dear all, The Germany branch of the international publisher Wolters Kluwer [1] is looking for support in the Content Architecture Team in Munich. The new position will mainly work on the FP7-ICT LOD2 project [1], but also on other internal and international content projects. A background in

Re: [Virtuoso-users] Reification alternative

Aldo, On Wed, 2010-10-13 at 16:02 -0300, Aldo Bucchi wrote: > From the docs: > > "output:route: works only for SPARUL operators and tells the SPARQL > compiler to generate procedure names that differ from default. As a > result, the effect of operator will depend on application. That is for > tri

Re: Reification alternative

Mirko wrote: Hi all, I try to understand alternatives to reification for Linked Data publishing, since reification is discouraged. For example, how could I express the following without reification: @prefix dc: . @prefix foaf: .

Re: [Virtuoso-users] Reification alternative

Hi Ivan, Hehe, I knew you were going to jump in, that's why I CC'd this to virtuoso-users ;) Before getting into the content of your response, let me just say this: I think Mirko's example is actually really common. Every application that I have built needs to keep track of ( at least ) two othe

Re: [Virtuoso-users] Reification alternative

Hello Aldo, I'd recommend to keep RDF_QUAD unchanged and use RDF Views to keep n-ary things in separate tables. The reason is that the access to RDF_QUAD is heavily optimized, we've never "polished" any other table to such a degree (and I hope we will not :), and any changes may result in severe p

Re: Reification alternative

Hi Mirko, Here's a tip that is a bit software bound but it may prove useful to keep it in mind. Virtuoso's Quad Store is implemented atop an RDF_QUAD table with 4 columns (g, s, p o). This is very straightforward. It may even seem naive at first glance. ( a table!!? ). Now, the great part is tha

Re: Reification alternative

I see mainly 2 alternatives: 1) using quads; 2) using named graphs. 1) Quads - Quads simply add a fourth element to triples. That element can be used for instance to annotated the triple, or name the triple for further descriptions. With your example: ex:User foaf:interest ex:Item

Re: Reification alternative

Hi Mirko, well the thing is, it wouldn't really work without a form a of reification (in my mind). There are use cases, where people prefer a simple knowledge representation of a semantic relation, and other ones, where people like to get a more detailed description about the semantic relatio

Reification alternative

Hi all, I try to understand alternatives to reification for Linked Data publishing, since reification is discouraged. For example, how could I express the following without reification: @prefix dc: . @prefix foaf: .

LAK11 - two weeks left to prepare your submissions

Call for Papers 1st International Conference on Learning Analytics & Knowledge February 27-March 1, 2011, Banff, Alberta, Canada https://tekri.athabascau.ca/analytics/ Sponsored by Athabasca University (Canada) and University of Queensland (Australia) In partnership with EDUCAUSE Publication of

Chris Welty on "Archeology for Ontology Patterns" - keynote presentation @ WOP 2010

= 2nd Workshop on Ontology Patterns 2010 (WOP2010) @ ISWC 2010 = Venue: Shanghai, China Workshop day: November 8th, 2010 Workshop web site [1] Invited Speaker: Chris Welty (IBM Research) [2] Title: Archeology for Ontology Patterns Abstract: Ontology Patterns for the semantic web are cl

RE: Domain of Dublin Core terms

Thanks Andy, that's very helpful. I had looked at the Abstract Model but the "i.e. an rdfs:Resource" interpretation wasn't obvious to me from that which is why I turned to the FAQ. Dave On Tue, 2010-10-12 at 10:16 +0100, Andy Powell wrote: > Well... the DCMI Abstract Model [1] says that a 'des