Re: How to model valid time of resource properties?

Dear all,  

here’s another paper that discusses different approaches: http://carsten.io/trame-kessler-kuhn-cosit2013.pdf

Best,
Carsten

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Carsten Kessler – http://carsten.io
Center for Advanced Research of Spatial Information
Department of Geography
Hunter College – CUNY
695 Park Avenue
New York, NY-10065


On Monday, October 13, 2014 at 8:32, Anisa Rula wrote:

> Hi,
>  
> our paper [1] surveys all the possible approaches for representing temporal information in the context of Linked Data. You may find it useful for your work.
>  
> Best regards,
> Anisa
>  
> 1. http://iswc2012.semanticweb.org/sites/default/files/76490481.pdf
>  
>  
> On 13 Oct 2014, at 14:16, Sarven Capadisli <info@csarven.ca (mailto:info@csarven.ca)> wrote:
> > On 2014-10-13 13:54, Frans Knibbe | Geodan wrote:
> > > Hello!
> > >  
> > > I wonder if a way of recording changes in properties of resources can be
> > > recommended. Many resources in real life have properties that have a
> > > time range of being valid. In some datasets, only the current (or most
> > > recent) state of a resource is stored, but in many cases it is important
> > > to keep track of the history of development of a resource.
> > >  
> > > An example:
> > >  
> > > :john_smith
> > >     a foaf:person ;
> > >     foaf:name "John Smith" ;
> > >  
> > > Let's say that on 2013-09-27 John Smith marries Betty Jones. John Smith
> > > is still the same person, so it makes sense to extend the same resource,
> > > not create a new version:
> > >  
> > > :john_smith
> > >     a foaf:person ;
> > >     foaf:name “John Smith” ;
> > >     ex:marriedTo :betty_jones ;
> > >  
> > > How could I efficiently express the fact that the statement :john_smith
> > > ex:marriedTo :betty_jones is valid from 2013-09-27? And if the couple
> > > divorces, that the property has expired after a certain date? It would
> > > be nice if the way of modelling makes it easy to request the most recent
> > > state of a resource, any historical state, or a list of changes during a
> > > time period.
> > >  
> > > A quick web scan on the subject revealed some interesting research
> > > papers, but as far as I can tell all solutions need extensions of RDF
> > > and/or SPARQL to work.
> > >  
> > > Perhaps this question is really about the ability to make statements
> > > about a triple? Which is a problem for which no satisfactory solution
> > > has been found yet?
> > >  
> > > Regards,
> > >  
> > > Frans
> >  
> > Hi Frans,
> >  
> > This is not a comprehensive answer on this topic, but you might want to take a look at PROV-O [1] (which can address validity and history of entities) and maybe even employ OA [2].
> >  
> > Capturing temporal dimension of linked data by Jindřich Mynarz is an excellent read [3].
> >  
> > [1] http://www.w3.org/TR/prov-o/
> > [2] http://www.openannotation.org/spec/core/
> > [3] http://blog.mynarz.net/2013/07/capturing-temporal-dimension-of-linked.html
> >  
> > -Sarven
> > http://csarven.ca/#i