Re: Best Practices for Converting CSV into LOD?

e/year" -> "state/year/month" -> > "state/year/month/typeOfProducer" -> > "state/year/month/typeOfProducer/energySource"). > 4. Any other considerations that I'm overlooking? > > Thanks, > Jamey > -- Dr. Axel Rauschmayer axel.rauschma...@ifi.lmu.de http://hypergraphs.de/ ### Hyena: organize your ideas, free at hypergraphs.de/hyena/

An interactive shell for teaching RDF

I wanted a hands-on session for my lecture on RDF, so I added an interactive shell to Hyena: http://2ality.blogspot.com/2010/07/teaching-rdf.html I'd be interested to know what others use to teach RDF (in a tutorial style). Axel -- Dr. Axel Rauschmayer axel.rauschma...@ifi.lmu.de

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

perties, transitive properties), but those would definitely help. [1] http://www.w3.org/2009/12/rdf-ws/papers/ws17 There might not be anything in it, scientifically, but it would help to sell RDF to a community that is largely orthogonal to the one that is after RDF + semantics. -- Dr. Axel R

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

ee, it would be good to get a full list of the benefits. >> >>> >>> It is a no brainer not to do the fix even if it is technically correct >>> >>> Jeremy >>> >>> >> >> >> > > > > -- > John S. Erickson, Ph.D. > http://bitwacker.wordpress.com > olyerick...@gmail.com > Twitter: @olyerickson > > -- Dr. Axel Rauschmayer axel.rauschma...@ifi.lmu.de http://hypergraphs.de/ :: Hyena: connected information manager, free at hypergraphs.de/hyena/ ::

Re: Subjects as Literals

ble reasoners to work > more efficiently with a smaller set of rules. (I gather that at least some of > the RDFS rule engines out there already do this, internally.) > >> 2) Does literal as subject make sense in "linked data" (I ask mainly >> from a "follow yo

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

FL 32502 (850)291 0667 mobile >> phayesAT-SIGNihmc.us http://www.ihmc.us/users/phayes >> >> >> >> >> >> >> >> > > > -- > David Booth, Ph.D. > Cleveland Clinic (contractor) > http://dbooth.org/ > > Opinions expressed herein are those of the author and do not necessarily > reflect those of Cleveland Clinic. > > > -- Dr. Axel Rauschmayer axel.rauschma...@ifi.lmu.de http://hypergraphs.de/ :: Hyena: connected information manager, free at hypergraphs.de/hyena/ ::

Re: SPARQL: sorting resources by label?

DESCRIBE can be used in the future for this? Axel On Mar 13, 2010, at 4:51 , Danny Ayers wrote: > On 13 March 2010 04:16, Axel Rauschmayer wrote: > >> Thanks for any comments or suggestions... > > I'm a little perturbed that you have to use something so convoluted to > g

Re: SPARQL: sorting resources by label?

FILTERs (for faceted navigation etc.). Axel On Mar 13, 2010, at 4:51 , Danny Ayers wrote: > On 13 March 2010 04:16, Axel Rauschmayer wrote: > >> Thanks for any comments or suggestions... > > I'm a little perturbed that you have to use something so convoluted to > g

SPARQL: sorting resources by label?

The closest I get is the following SPARQL query: > SELECT DISTINCT ?subj ?label > WHERE { > GRAPH ?graph { > ?subj ?pred ?obj . > OPTIONAL { > ?subj ?labelPred ?label . > FILTER ( > (?labelPred =

Re: Why are RDF containers (rdf:Seq etc.) so little appreciated?

> Im not sure what you mean by 'stable identity', It's a slightly (possibly unorthodox) viewpoint I take during RDF editing: With a container, you can say "I will edit the sequence at URI X" and be sure that X stays the same, no matter how you change the elements. With a collection, the "ancho

Why are RDF containers (rdf:Seq etc.) so little appreciated?

In contrast to RDF collections (rdf:List), they have a stable identity and don't use nested resources (=easy to remove). Furthermore, standard RDFS inferencing can be used to infer membership as the property rdfs:member. Yet, most RDF vocabularies that I know of use collections and syntaxes such

Re: [fresnel] Fresnel: State of the Art?

> Our goal with the first release of the Fresnel vocabulary in 2006 was to have > more people (beyond us) play with it in different contexts and get feedback > so that the language could be enhanced iteratively. Maybe it is now time to > do such an iteration? I am working on my own Fresnel 2. T

Re: [fresnel] Fresnel: State of the Art?

I think, it would make sense at some point in time to work on "Fresnel 2". My experiences (while implementing editing extensions for Fresnel for Hyena [1]) were as follows: - Fresnel works great for editing, with a few extensions. I've found some things to be too complicated (mainly formats and

Re: Context Tags, Context Sets and Beyond Named Graphs...

This description reminds me of NRL, maybe it is closer to what you need. http://www.semanticdesktop.org/ontologies/nrl/ Axel On Jan 18, 2010, at 21:47 , Leigh Dodds wrote: > Hi Jeni, > > 2010/1/18 Jeni Tennison : >> Do you think that http://www.w3.org/2004/03/trix/rdfg-1/ is sufficient for >> d

Publications on SOA and linked data?

erent picture. Is anyone aware of such publications (or currently writing one ;-) ? There are semantic web services, but I would expect linked data web services to be different. Greetings, Axel -- Axel Rauschmayer a...@rauschma.de http://www.pst.ifi.lmu.de/people/staff/rauschmayer

Re: Representing time varying data - suggestions for ontologies?

earth science that support this type of structure? Loosely related: http://www.w3.org/TR/swbp-n-aryRelations/ It mentions: For a discussion on how to represent units and quantities in OWL, please refer to a different note (/to be written/) Axel -- Axel Rauschmayer a...@rauschma.de http://www.pst.if

Re: Distributed versioning for RDF?

Yes. I meant (and want) live access, but would never expect an RDF schema to provide this. ;-) Changesets seem very useful for exporting histories. Axel On Jul 30, 2009, at 15:45 , Ian Davis wrote: On Thu, Jul 30, 2009 at 2:41 PM, Axel Rauschmayer wrote: Looks nice, but only works for

Requirements: RDF and social applications (was: Distributed versioning for RDF?)

I've blogged about what I've learned so far: http://2ality.blogspot.com/2009/07/requirements-rdf-and-social.html -- axel.rauschma...@ifi.lmu.de http://www.pst.ifi.lmu.de/~rauschma/

Re: Distributed versioning for RDF?

/schema.html Ian On Wed, Jul 29, 2009 at 2:37 PM, Axel Rauschmayer wrote: Offhand, I see the following requirements for many (mostly social) RDF applications: - text indexing - text diff for versioning - distributed versioning and synchronization. http://en.wikipedia.org/wiki

Distributed versioning for RDF?

n/Ods -- Axel Rauschmayer a...@rauschma.de http://www.pst.ifi.lmu.de/people/staff/rauschmayer/axel-rauschmayer/ http://2ality.blogspot.com/ http://hypergraphs.de/

Re: Alternatives to OWL for linked data?

You were asking about description logic programming; well, OWL 2 RL: http://www.w3.org/TR/owl2-profiles/#OWL_2_RL is exactly that: it is a manifestation of DLP. It has a Direct Semantics 'side', compatible with OWL 2 DL, and a rule based 'side', described by the rule set: http://www.w3.org

Re: Alternatives to OWL for linked data?

d you look at SPIN? http://spinrdf.org/ That should allow you do do a lot with data without leaving the now mainstream Semantic Web technology stack (as long as a small fragment of OWL is sufficient for you). Best Martin Axel Rauschmayer wrote: I'm currently reading Hendler's

Alternatives to OWL for linked data?

I'm currently reading Hendler's brilliant book "Semantic Web for the Working Ontologist". It really drove home the point that OWL is not a good fit when using RDF for *data* (names are generally not unique, open world assumption, ...). But what is the alternative? For my applications, I hav

Introducing myself

Hi! My name is Axel Rauschmayer and Kingsley Idehen pointed me in the direction of this community. I've started in software engineering and slowly drifted towards RDF and the semantic web/linked data. It is still a long-term goal of mine to apply linked data ideas to software engine