SIOC term deprecation: how would you go about it?
Just bringing up an issue raised on the Pedantic Web mailing-list, which for me is unresolved. SIOC recently deprecated sioc:User and introduced a less ambiguously labelled class sioc:UserAccount. SIOC...
View ArticleWhat are the success stories of the Semantic Web/Linked Data?
Imagine I'm a detractor of Semantic Web technologies and/or Linked Data, and I'm not impressed by the usual shiny things or dreamy elevator pitches (not that some of them are not good, but hypothetical...
View ArticleWhat criteria were used for selecting/omitting OWL 2 RL/RDF rules
General Question: OWL 2 RL/RDF rules offer a partial axiomatisation of OWL 2 RDF-based semantics. Fair enough. I gather that the selection of rules is to align the entailments possible through Direct...
View ArticleNamed graphs and multi-graph documents... standardisation and directions?
Named Graphs have thus far served a very useful purpose (esp. in SPARQL) for supporting notions of provenance into systems which want to store and track data from multiple sources. The RDF next steps...
View ArticleSkolem syntax for blank nodes in SPARQL?
The default "semantics" for blank nodes in SPARQL queries is to represent existential variables (essentially a normal variable whose value cannot be returned). As such, specifying blank-nodes in...
View ArticleCommon Semantic Web misconceptions you've encountered?
The question applies to misconceptions you may have encountered on this site, or elsewhere, or even have (had) yourself relating to RDF(S)/OWL/SPARQL/Syntaxes/Linked Data/etc. I'm motivated by...
View ArticleWhat services would you like to see a Linked Data Warehouse offer?
Let's assume that one could build a warehouse with significant coverage of Linked Data. What kind of services would you like to see such a warehouse offer (either to humans or to software agents)? Like...
View ArticleHistorical perspective on Linked Data
Looking for discussion on the history of Linking Open Data/Linked Data... so far, I've been patching together information from web-pages and some publications. Linked Data design issues Announcement of...
View ArticleReference for largest scale tableau-based reasoning over OWL?
Can anyone offer me a pointer (preferably a research paper) which demonstrates the largest known scale of OWL reasoning using a tableau-based implementation? I also might be interested in non-OWL...
View ArticlePublishing Rulesets in the Wild
...regarding publishing RDF rulesets in the Wild (particularly as Linked Data)... From here, it seems that you cannot encode the following form of inference using OWL 2 Full: ?x ex:youngerThan ?y . ?x...
View ArticleLinked Data: Describing non-RDF information resources...
Hmm... quick question. What's the latest and greatest wisdom within Linked Data for providing RDF metadata about an information resource? To make it more challenging, the resource is: not an RDF...
View ArticleMeta-space for semanticoverflow discussion
So we're past 1,000 questions on this site. Thought it might be useful to have a coherent space for meta-discussion of the site itself, where we can discuss various issues/concerns—as needs...
View ArticleIntensional/extensional RDFS
Anyone have any idea why the transitivity of rdfs:subClassOf and rdfs:subPropertyOf are included in RDFS entailment—i.e., "hardcoded" in the intensional semantic conditions and given rules rdfs5 and...
View ArticleUse-cases for isomorphism/leanness checking
I note that there is code in Jena for doing isomorphism checks, but I struggle to think of tangible use-cases, other than maybe checking if two documents are the same after they've been parsed with...
View ArticlePublishing Legacy Data as Linked Data (Pointers, Resources & Tools)
I'm looking to collect some pointers, guides, tools, etc. for publishing legacy structured data as Linked Data, and I'd like your help. Any stuff heading in this direction—particularly stuff accessible...
View ArticleLinked Data... singular or plural?
Should the phrase "Linked Data" be considered singular or plural in the general case? Linked Data are published... Linked Data is published... ...which do you think?
View ArticleProperty intersection (im)possible in OWL 2 Full?
Question: Is it or is it not possible to model property intersections in OWL 2 Full? (If so, how?) What I mean by property intersections would be to model the following type of inference for all ?x/?y:...
View ArticleWhat's the problem with inverse-functional datatype properties?
...inverse-functional datatype properties are not allowed in OWL 2 DL although they are common in vocabularies such as FOAF (e.g., foaf:mbox_sha1sum). Anyone know the technical reason why they are not...
View ArticleVirtuoso/DBpedia behaviour correct? [Re: SPARQL fallback property]
This question is a follow up to @morphyn's question and his answer on "SPARQL fallback property". On the DBpedia SPARQL endpoint, this returns results for ?name: SELECT DISTINCT * WHERE {...
View ArticleURIs vs. IRIs in Semantic Web standards and tools
So, IRIs generalise URIs to allow further unicode support. Cool. However, it seems that different Semantic Web standards make different choices here. If I understand correctly RDF(S) uses URIs, RDF 1.1...
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