- From: Danny Ayers <danny.ayers@gmail.com>
- Date: Thu, 2 Jul 2009 16:10:46 +0200
- To: "Linde, A.E." <ael13@leicester.ac.uk>
- Cc: "public-lod@w3.org" <public-lod@w3.org>, semantic-web at W3C <semantic-web@w3c.org>
2009/7/2 Linde, A.E. <ael13@leicester.ac.uk>: > Could someone summarise this thread in a single (unbiased?) post, please? I'll try to answer the questions, even though I've only skimmed the thread... > a) what is/are the blocks on LOD via RDF The vast majority of publication tools and supporting services are geared towards publishing HTML. While a key piece of Web architecture is the the ability to publish multiple representations of a given resource (e.g. both HTML and RDF/XML format documents with a single URI through content negotiation), the mechanisms needed to do this are often unavailable from regular hosting services. Similarly the redirect handling needed to provide a description of a resource that cannot appear directly on the Web - things, people etc - is also not possible. Typically these would be done through using .htaccess files on Apache. > b) how does RDFa help and what are its own failings; RDFa allows the RDF to be published in a HTML document, so content negotiation isn't needed. You get two representations in one. Again tool support is a problem, although with RDFa being a new spec the situation is bound to improve. GRDDL may also be a useful alternative if the source data is available in an XML format. > c) what are the recipes for making data discoverable, linkable and usable there are recipes at: http://www4.wiwiss.fu-berlin.de/bizer/pub/LinkedDataTutorial/ though perhaps a cheat sheet would be a good idea? > if i) one has full access to a server; this is pretty well documented, e.g. as above > ii) one has only user directory acccess to a server; while this may often be the same as i) generally I'd suggest it's a case-by-case thing, depending on the web server configuration iii) one does not know or care what a server is. Depending on the nature of the data, it may be possible to use one of the semweb-enabled document-first publishing tools (a semantic wiki or CMS). Alternately a relational DB to RDF mapping tool may help. But best bet right now though would be to have a word with someone offering linked data publishing services - Talis or OpenLink, may be others. I've no doubt missed a lot of points and alternate approaches, but I these were top of my own mental heap :) Cheers, Danny. -- http://danny.ayers.name
Received on Thursday, 2 July 2009 14:11:27 UTC