Re: Querying dbpedia from the command line?
Bob DuCharme wrote: > Doing it from a python/perl/etc. script and loading it into data > structures from these languages is the next step I want to pursue. If you are going out of shell scripting, you don't need to retrive the query with wget/curl, you have SPARQL support in many programming languages [1], including scripting languages such as Python. Take a look on that list. Cheers, [1] http://esw.w3.org/topic/SparqlImplementations -- Sergio Fernández - [EMAIL PROTECTED] R&D Deparment CTIC Foundation - www.fundacionctic.org Phone: +34 984 29 12 12 Fax: +34 984 39 06 12 Edificio Centros Tecnológicos Parque Científico Tecnológico 33203 Cabueñes - Gijón - Asturias - Spain
Re: SPARQL By Example presentation available
This is what I have been waiting for! Congrats and thanks! Juan Sequeda, Ph.D Student Research Assistant Dept. of Computer Sciences The University of Texas at Austin http://www.cs.utexas.edu/~jsequeda [EMAIL PROTECTED] Semantic Web in Austin: http://juansequeda.blogspot.com/ On Thu, Sep 18, 2008 at 1:27 PM, Lee Feigenbaum <[EMAIL PROTECTED]> wrote: > > Thanks to everyone who contributed in one way or another to these slides, > the queries in them, and the datasets & endpoints behind them. > > I'd love any feedback, suggestions for improvements or additions, etc: > > http://www.cambridgesemantics.com/2008/09/sparql-by-example/ > > I'd particularly be glad to hear of any use that anyone else gets out of > these slides. > > Lee > > PS I can't guarantee what I can do about it, but I'm also happy to receive > reports if the slides don't render well on particular browser/OS/display > combinations - I work & present mainly with Firefox 3 on WinXP with various > resolutions, fwiw. > >
Re: New LOD Cloud - Please send us links to missing data sources
- "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> > To: public-lod@w3.org > Sent: Friday, September 19, 2008 1:55:07 AM GMT +10:00 Brisbane > Subject: Re: New LOD Cloud - Please send us links to missing data sources > > Hello, > > > There doesnt seem to be any mention of the LiveJournal or any of the > livejournal powered blogging sites, such as: vox, friendfeed, hi5 to > name a few. I think they are implicitly in the FOAF cloud, for want of a better description of that node ;) Cheers, Peter
Re: New LOD Cloud - Please send us links to missing data sources
Hello, There doesnt seem to be any mention of the LiveJournal or any of the livejournal powered blogging sites, such as: vox, friendfeed, hi5 to name a few. And you are missing links from QDOS to dbpedia :) Cheers, Mischa On 17 Sep 2008, at 15:14, Anja Jentzsch wrote: Hi all, thanks for all the input. Find the updated LOD cloud attached. We added: 6. Surge Radio 7. MySpace Wrapper 8. BBC Programmes 9. BBC Placount Data and several new connections between the datasets We are still in contact with Kingsley on adding the mentioned wrappers to the cloud. Anything still missing? Anja Chris Bizer schrieb: Hi all, Anja and I are currently updating the LOD cloud for the ESW wikipage. Draft attached. Up till now we have added: 1.CrunchBase 2. LinkedMDB 3. YAGO 4. UMBEL 5. the PubGuide It nice to see that fitting everything into one diagram is getting increasingly difficult as the cloud grows :-) Did we forget any new data sources or links between data sources? As discussed before: A data source qualifies for the cloud, if the data is available via dereferencable URIs and if the data source is interlinked with at least one other source (meaning it references URIs within the namespace of the other source). Any feedback highly welcome. Cheers Chris -- Prof. Dr. Chris Bizer Freie Universität Berlin Phone: +49 30 838 55509 Mail: [EMAIL PROTECTED] Web: www.bizer.de ___ Mischa Tuffield Email: [EMAIL PROTECTED] Homepage - http://users.ecs.soton.ac.uk/mmt04r/ FOAF - http://users.ecs.soton.ac.uk/mmt04r/foaf.rdf
SPARQL By Example presentation available
Thanks to everyone who contributed in one way or another to these slides, the queries in them, and the datasets & endpoints behind them. I'd love any feedback, suggestions for improvements or additions, etc: http://www.cambridgesemantics.com/2008/09/sparql-by-example/ I'd particularly be glad to hear of any use that anyone else gets out of these slides. Lee PS I can't guarantee what I can do about it, but I'm also happy to receive reports if the slides don't render well on particular browser/OS/display combinations - I work & present mainly with Firefox 3 on WinXP with various resolutions, fwiw.
Re: Querying dbpedia from the command line?
Richard Cyganiak wrote: 1. SPARQL is great, but too verbose for the command line. I don't worry about this much, because I'm not interested in using it from the command line per se as much as the ability to use a script to retrieve data from a SPARQL endpoint, and doing it from the command line is the first step toward that. Doing it from a python/perl/etc. script and loading it into data structures from these languages is the next step I want to pursue. 3. We are all waiting for SPARQL processors that federate multiple SPARQL endpoints transparently into a single endpoint. Progress is being made in this area, but it's slow. Meanwhile, there is a very nice 80/20 solution to this problem: Andy Seaborne has implemented a SERVICE keyword for his extended variant of SPARQL, which allows you to address parts of a SPARQL query to a specific endpoint. This seems like an easy win for data integration demos. Definitely, and to help the concept of Linked Data live up to its name. I had been planning a blog post titled "Linking Linked Data" but wasn't sure how I was going to go about it. I look forward to playing with the SERVICE keyword. Bob
Re: Querying dbpedia from the command line?
On 18 Sep 2008, at 02:48, Bob DuCharme wrote: As a side note, I think this is going to be very big, because while Linked Data (and much of the semantic web) is theoretically about exposing data to programs instead of to eyeballs like the traditional web, most of the linked data and semantic web demos I see out there are about visual browsing of linked data--displaying it to eyeballs. When we can grab the results of a linked data SPARQL query with a script, then we can really start doing new and interesting things with it. I agree. Let me add some random thoughts on how to take this idea (retrieving data from RDF sources on the command line for further processing) into more powerful directions. 1. SPARQL is great, but too verbose for the command line. I would really like to use a single-line, XPath-style query language for RDF in situations like this. There are a couple of proposals for such a language out there, several of them are called "RDFPath" and there's Uche Ogbuji's Versa. It would be really great to see some progress in this area. The first one of these languages to get a well-packaged implementation on top of the Jena API will probably win. 2. I really like the idea behind the Semantic Web Client Library (part of NG4J) for exactly the reason you state above -- it makes it possible to get data from the sources out there for further processing. It has a command line tool that allows you to ask SPARQL queries against (potentially) the entire Web. Unfortunately, we never managed to get the library beyond a prototype stage, and a lot of work remains to be done on it. Still, the idea remains valid and is important, I think. 3. We are all waiting for SPARQL processors that federate multiple SPARQL endpoints transparently into a single endpoint. Progress is being made in this area, but it's slow. Meanwhile, there is a very nice 80/20 solution to this problem: Andy Seaborne has implemented a SERVICE keyword for his extended variant of SPARQL, which allows you to address parts of a SPARQL query to a specific endpoint. This seems like an easy win for data integration demos. Richard Bob
