Hi, see below > Hello Xwikians, > > Vincent Massol wrote: >> On Aug 30, 2008, at 11:56 PM, Artem Melentyev wrote: >> >>> Jonas von Malottki wrote: >>>> Hello Devs, >>>> >>>> by reading that another Question crossed my mind: >>>> Have you ever thought of giving XWiki also some semantic >>>> capabilities? >>>> >>>> I mean the Idea of Semantic Wikis is not new: >>>> http://en.wikipedia.org/wiki/Semantic_wiki >>>> >>>> In Xwiki you could just put a Link in a 2-tuple form for letting it >>>> fulfil the "subject - predicate - object"-Association, with the >>>> Subject >>>> as the Site where the link is set and the Object the Site where the >>>> link >>>> is pointing to, so only the predicate is missing. >>>> >>>> And sometimes I really think it could make Sense. Especially in Xwiki >>>> where you could exploit Information stored that way directly via >>>> Scripts >>>> and Applications developed in XWiki itself. >>> The question is not relevant to this topic (Query Language), so you'd >>> better to start new tread. >>> But anyway, there are some effort, I think >>> nepomuk.semanticdesktop.org as possible example. But I don't know >>> much >>> on it. >>> About links, this question to Vincent: >>> can we add some meta data to link? So we can use these links later for >>> semantic needs? :) >>> for example (semantic-mediawiki) http://semanticweb.org/wiki/London : >>> [[capital of::England]] >>> "capital of" is predicate, England is target page. >> >> The answer is yes. I was about to send a proposal to modify links >> since I have that need internally in order to support linking to images. >> The idea is to have this new format: >> >> [[label>reference>property1=value1 property2 = value2...]] >> >> For now the "known" properties would be target and image: >> [[label>reference>target="_new" image="myimage.png"]] >> >> But it supports any number of properties. >> >> Will that fit your use case? > > Yes, indeed it would. The only Thing is that this would not be always > easy to understand for the average user (who will use the WYSWIG-Editor) > But generally the above Example would translate to: > Somewhere on a London Xwiki page: > [[UK>United Kingdom>predicate="capital_of"]] > (correct ?)
The subject, London, is implied in your example. I don't think this is good. What about: [[London>LondonURL>capitalOf="ukURL"]] but the predicate is not uniquely identified by a namespace. It would be nice to be able to write: [[London>LondonURL>o:capitalOf="ukURL"]] where "o" is defined elsewhere, as the URI of the ontology defining the capitalOf predicate, but I'm not sure this will be supported. In your example I think you're trying to represent a triple using the link syntax. If you are interested in searching for the capital of UK then a better solution would be to store the triples in a knowledge base (as objects attached to a page for instance) and then just bind the "London" string to the London concept using the link syntax. > > In OWL the Fact would be expressed via the triple: > "London"-URL "capital of"-URL "UK"-URL > All URL whould point to Concepts, while the Capital of Url would point > to a Concept that is of the type "Object Property". > http://en.wikipedia.org/wiki/Web_Ontology_Language > > The thing why this came to my mind was, that at some point you would > like to ask the Wiki: "What is the capital of UK?". Or in corporate > environments maybe: "Who is responsible for Product A?" > Surely there has to be done a lot more, specifically in the query > language. > > There are some Research Prototypes in Semantic Wikis, whilst the most > appealing Java one seems to be IkeWiki for me now > http://ikewiki.salzburgresearch.at/ > Another even more structured system is freebase: > http://www.freebase.com/view/en/xwiki > Maybe it can give a short hinge what is possible and feasible. > > While I thought Nepomuk just used XWiki for a "CMS" it turns out that > they also do research on the topic but I still cannot find any XWiki > "branch" there. > > > Greetings > Jonas > > _______________________________________________ > devs mailing list > [email protected] > http://lists.xwiki.org/mailman/listinfo/devs > _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
