Also relevant to the discussion I think, 'dynamic' classes generated from metadata.
http://www.eclipse.org/eclipselink/documentation/2.4/moxy/dynamic_jaxb001.htm On Tue, Nov 3, 2015 at 9:56 PM, Stephen Cameron <[email protected]> wrote: > I cannot help much there, but looking about myself I see that some are > using Neo4j to visualise ontologies [1]. > > In terms of building applications using linked data as the foundation, I > have come across Callimachus [2], but no experience as yet. > > My interest has come from the database and data management side, more than > the business application side. In that respect I know that linked data is > starting to take off and those that I respect like it alot [3][4]. > > I would say the best ontologies are in the medical realm. a quick search > results in [5] > > [1] https://github.com/SciGraph > [2] http://callimachusproject.org/ > [3] http://www.marklogic.com/what-is-marklogic/features/semantics/ > [4] > http://blogs.avalonconsult.com/blog/search/semantics-search-marklogic-7-gets-rdf/ > [5] https://github.com/OGMS/ogms > > On Tue, Nov 3, 2015 at 9:15 PM, Dan Haywood <[email protected]> > wrote: > >> was just poking around for an example ontology that one might play with... >> the BBC looks like a good bet [1]. >> >> I suspect that there's some way to access the semantic web that drives its >> web pages in a machine processable form. This guy [2] seems to have >> published some useful stuff in this area (works for the Beeb). >> >> Dan >> >> [1] http://www.bbc.co.uk/ontologies/bbc >> [2] http://raimond.me.uk/pubs/ >> >> >> On 3 November 2015 at 02:16, Stephen Cameron <[email protected]> >> wrote: >> >> > On Tue, Nov 3, 2015 at 11:24 AM, Dan Haywood < >> [email protected] >> > > >> > wrote: >> > >> > > On 2 November 2015 at 23:27, Stephen Cameron < >> [email protected] >> > > >> > > wrote: >> > > >> > > > >> > > > What relevance of this too Apache Isis? Well you nearly got it >> straight >> > > > off, that the Isis meta-model is a model that maybe can be exported >> as >> > > OWL. >> > > > I don't think so as its more of logical model than a conceptual >> one. I >> > am >> > > > thinking the other way around, that a conceptual model in OWL, or >> > > something >> > > > else, could be the basis of the Isis meta-model. >> > > > >> > > > >> > > > Also very interesting. I think this would be doable... further >> > thoughts >> > > below. >> > > >> > > >> > > >> > > >> > > >> > > > The thing that led me to Isis was that half of this picture is >> already >> > > > done, the model to UI part, I thought maybe I could add the other >> half >> > > > (person to model)? >> > > >> > > >> > > Yes, perhaps... >> > > >> > > Now that we have view models as first-class citizens, I could imagine >> an >> > > Isis application where every semantic resource could be surfaced as an >> > view >> > > model (@DomainObject(nature=EXTERNAL_ENTITY) is probably how I would >> > model >> > > it). >> > > >> > > Or, an alternative would be treat them as regular persisted entities >> via >> > > DataNucleus, and use DN's Store API to know how to query a semantic >> web >> > of >> > > resources. However, that's one extra layer to worry about which may >> or >> > may >> > > not work. Sticking with Isis view models is probably easier. >> > > >> > > >> > > >> > >> > > >> > > >> > > >> > > > Also the meta-model in Isis is a OO model, which is >> > > > nearly what you want perhaps? >> > > >> > > >> > > >> > > As you know, the way in which Isis builds up its metamodel is quite >> > > flexible (the FacetFactory API). In Isis' default programming model >> > > there is a "special" FacetFactory called >> > > "PropertyOrCollectionIdentifyingFacetFactory" that is used to infer >> the >> > > initial "know-what" structure of each domain class. I could imagine a >> > > similar facet factory for the semantic web that queried the OWL >> metamodel >> > > (?) to ask which triples exist for a particular resource. >> > > >> > > >> > > >> > >> > > >> > > > That is what I want to get a handle on via >> > > > this course. >> > > > >> > > > >> > > Good stuff; will hear back presently no doubt! >> > > >> > > Thx >> > > Dan >> > > >> > > >> > > Encouraging, I have browsed around in the meta-model code, but very >> > casually! >> > >> > I am hoping that others might like to work through a design on this >> mailing >> > list, hence my suggestion of doing the course, so we are all on the same >> > page (mostly) at the start. >> > >> > Open-source CMS systems have gone down the semantic path a bit, such as >> > semantic wikis. The idea of using a conceptual model as the interface >> to a >> > database has a long history but never seems to make it as a mainstream >> > thing (See for example Object-Role-Modeling). Microsoft has Entity >> > Framework but that still seems a logical model to me, a tool to help >> > programmers. >> > >> > But I believe DDD has this conceptual model idea at its core in terms of >> > the Ubiquitous Language. That by being precise about the meaning of >> terms >> > new insights are gained. >> > >> > That OWL is widely used might make it a good choice. What the user sees >> > does not necessarily have to be lots of URIs, these are essentially just >> > names within namespaces (same as class names within a package names), >> its >> > just a means of classification. >> > >> > Cheers >> > >> > >> > >> > >> > > >> > > > Regards >> > > > Steve >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > On Tue, Nov 3, 2015 at 6:25 AM, Dan Haywood < >> > > [email protected]> >> > > > wrote: >> > > > >> > > > > Thanks for the precis, Cesar... very interesting. >> > > > > >> > > > > Clearly in Isis we have a lot of the information in our metamodel >> > that >> > > > > could be the input for a semantic web ontology; I'd appreciate >> > > > > understanding how this information is "exported" such that an Isis >> > app >> > > > can >> > > > > also be considered as a "semantic web app" (if that's even a >> term...) >> > > > > >> > > > > cheers >> > > > > Dan >> > > > > >> > > > > >> > > > > On 2 November 2015 at 15:59, Cesar Lugo <[email protected] >> > >> > > > wrote: >> > > > > >> > > > > > Dan, I think this is an important and very interesting topic. I >> > have >> > > > some >> > > > > > basic knowledge of the semantic web concepts, and I have done >> some >> > > > > > significant prototyping using semantic web tools, just far from >> > being >> > > > an >> > > > > > expert or knowledgeable person. As far as I k now, the semantic >> web >> > > > > concept >> > > > > > was developed by the father of the www, and it adds semantics to >> > the >> > > > web >> > > > > > content, and to the web applications as well. This has also been >> > > called >> > > > > the >> > > > > > Web 3.0, and the semantic web technologies go from adding >> semantics >> > > to >> > > > > the >> > > > > > web pages, to build entire semantic applications. >> > > > > > >> > > > > > On the UI web pages side, it adds semantics embedded within the >> > HTML >> > > > with >> > > > > > semantic extensions, so a browser would be able to know more >> > > > information >> > > > > > about the semantics of that page. For example, when you look at >> an >> > > > > amazon's >> > > > > > web page and find a book, you know that you are looking at a >> book, >> > > you >> > > > > know >> > > > > > what a book is, you know it's about growing apples, and you know >> > some >> > > > > > numbers besides it are the different prices of the book, and the >> > text >> > > > > > besides it is an overview of the book's contents. The browser, >> > > > currently >> > > > > in >> > > > > > web 2.0, does not know any of those semantics, but just the page >> > > > content >> > > > > in >> > > > > > terms of things like fields, controls and links. The semantic >> web >> > > lets >> > > > > the >> > > > > > browser infer all those semantics from the web page, buy using >> > > > ontologies >> > > > > > and extended dictionaries (they are currently creating >> ontologies >> > > based >> > > > > on >> > > > > > Wikipedia content, but structured so the systems can understand >> and >> > > > infer >> > > > > > meaning, not just content). The idea is that having the browser >> > know >> > > > the >> > > > > > semantics, it will help interact among other systems in a more >> > > > semantical >> > > > > > way, like, for example, if you are interested in growing apples, >> > then >> > > > you >> > > > > > might also be interested in growing some kinds of organic food. >> > > > > > >> > > > > > Then, at the domain logic layer, you use ontologies (expressed >> in >> > > RDFs) >> > > > > to >> > > > > > represent your domain, which allows you to re-use existing >> > ontologies >> > > > for >> > > > > > common topics like a customer, a vendor, a company, the >> > relationship >> > > > > among >> > > > > > people (like the FOAF friend of a friend ontology), a product, >> and >> > > > more. >> > > > > > Then, there is a language called SPARQL, similar to SQL, but >> works >> > at >> > > > the >> > > > > > ontology level. All that and more lets you create your apps with >> > > > semantic >> > > > > > content all over the app, not only at the UI. Your application >> will >> > > be >> > > > > more >> > > > > > knowledgeable about the semantics of the topics (domain objects) >> > > within >> > > > > it, >> > > > > > so you can use knowledge management methods to define and manage >> > your >> > > > > > domain logic and your exposed content, and interact with other >> > > systems >> > > > > at a >> > > > > > semantic level. >> > > > > > >> > > > > > Cesar. >> > > > > > >> > > > > > -----Original Message----- >> > > > > > From: Dan Haywood [mailto:[email protected]] >> > > > > > Sent: Monday, November 2, 2015 2:52 AM >> > > > > > To: users >> > > > > > Subject: Re: Course of Interest >> > > > > > >> > > > > > Shall be interested to hear your thoughts on this... not a >> subject >> > I >> > > > have >> > > > > > any knowledge of. >> > > > > > >> > > > > > cheers >> > > > > > Dan >> > > > > > >> > > > > > On 2 November 2015 at 02:40, Stephen Cameron < >> > > > [email protected] >> > > > > > >> > > > > > wrote: >> > > > > > >> > > > > > > Hello Apache Isis Community, >> > > > > > > >> > > > > > > I am about to start an free online course on Semantic Web >> > > > > > > Technologies. At the moment the connection to Isis is not >> clear, >> > > but >> > > > I >> > > > > > > have ideas. I am doing this course to see if my ideas have any >> > > > > > > relationship to reality, specifically in regard to conceptual >> > > models. >> > > > > > > >> > > > > > > https://open.hpi.de/courses/semanticweb2015?locale=en >> > > > > > > >> > > > > > > Regards >> > > > > > > Steve Cameron >> > > > > > > >> > > > > > >> > > > > > >> > > > > > --- >> > > > > > This email has been checked for viruses by Avast antivirus >> > software. >> > > > > > https://www.avast.com/antivirus >> > > > > > >> > > > > > >> > > > > >> > > > >> > > >> > >> > >
