Sherman Monroe wrote:
Hugh,

On Fri, May 15, 2009 at 5:18 PM, Hugh Glaser <[email protected] <mailto:[email protected]>> wrote:

    I have difficulty in interpreting what you say - we are looking at
    the same "linked data browser" page?:
    http://ec2.monrai.com:8890/facets/
    All I can see is a page that says: "Lookup things named "" " So
    the only possibility of linked data browsing is to put in
    something with a name.
    So I put something topical in (from this list).
    Since I see
    ...
     <Station rdf:about="http://ontologi.es/rail/stations/gb/MAN";>
       <foaf:name xml:lang="en">Manchester Piccadilly</foaf:name>
    ...
    I try "Manchester Piccadilly" and get some response, but nothing
    leads me to
    http://ontologi.es/rail/stations/gb/MAN.rdf or any of the data I
    find there.
    Similarly topical from this list, I find no way of browsing
    http://foaf.qdos.com/lastfm/people/keithalexander#me or getting to
    that page by searching for "Keith Alexander".



It appears you're right in this instance. However, here is some info we have on Manchester Piccadilly (Stations) <http://www.razorbase.com/?qid=10000101242426667642>. And here are records we have for People named Keith Alexander <http://www.razorbase.com/?qid=10000091242426317534>. We don't claim to have visability over the entire Linked Data cloud, but to say we are a browser of the Linked Data cloud is, I believe, as accurate as to say my car is a car although it hasn't been every place a car can go :) Google admits it may never be able to index a very large portion of the web <http://en.wikipedia.org/wiki/Dark_internet>, but that doesn't make them any less of a web search engine.

I've had conversations with Kingsley about this distinction, and based on his insight re. warehousing all this data, I can identity at least three LOD clouds (or at least three segments of it):

- warehouses (produced from published RDF dump archives)
- dynamic (sponged)
- crawled where you sponge/crawl progressively across the likes of PTSW, Sindice etc.. that receive pings and crawl data

Even a 4th where people publish linked data, expose an sparql endpoint but don't release archives. Better methods of advertising their SPARQL endpoints and RDF servers once they come online would greatly help us expand coverage.

-sherman
Sherman,

Hugh's key point is that you are not behaving like ODE, Zitgist, Marbles, Tabulator, etc..

Also, this simply means: use the Sponger that comes with your Virtuoso instance :-)

Kingsley



    I also see no way of doing "3. Raw URI Lookup" of this URI.


Yes, this is a feature that is pending in the razorbase UI, but will be added.

    I assert that if this is a "linked data browser", then since
    http://ontologi.es/rail/stations/gb/MAN.rdf conforms (I think) to
    "How to Publish Linked Data on the Web", then I should be able to
    browse it using the browser.
    If I can't, then it is not a "linked data browser".


Hmm, Internet Explorer doesn't implement some portions of the Javascript and CSS standards, but no one argues that IE is a W3C compliant browser and CSS/JS client. But I do understand your point, and it's something worth keeping in mind.


    Of course, this browser is very capable of browsing your excellent
    single site, but that is not the same thing, I am sorry to say.



Thanks so much for all your insight, feedback is always welcomed :)


--

Thanks,
-sherman

I pray that you may prosper in all things and be healthy, even as your soul prospers
(3 John 1:2)


--


Regards,

Kingsley Idehen       Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO OpenLink Software Web: http://www.openlinksw.com





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