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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi all,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The key to Linked Data is obviously the links, but I don’t think any of us quite know how the links actually work.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In theory, I imagine having a record (ie a set of triples), in a local triplestore, which links to records available on the Internet. Periodically, those records are downloaded, and stored in a local triplestore as a cache. Then we somehow follow the links as they are stored in our local triplestore and have a set of string literals which we can show to users on a web page.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In practice, I don’t know how that would work. I can see us getting a list of record subjects in our local triplestore, and then iterating through each one to download the links in its objects. But I don’t know where we’d put that content. I also don’t know if we’d recurse into that content to follow more links or not. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Let’s say that we store that content in named graph called “cache”. When it comes time to re-trace the links for our list of record subjects, how do we know what local content to delete? In theory, we could use the URI from the object, but many records contain many subjects, so even if we did delete that subject from “cache”, we haven’t deleted the other subjects that it links to internally in the triplestore.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m going to ask around to see if anyone can enlighten me. I’m hoping Petter might be able to shed light on how Oslo Public Library makes it work, especially in the context of ls.ext interfacing with Koha!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>David Cook<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Systems Librarian<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Prosentient Systems<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>72/330 Wattle St<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Ultimo, NSW 2007<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Australia<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Office: 02 9212 0899<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-AU'>Direct: 02 8005 0595<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>