Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Olaf Hartig
On Sunday 18 October 2009 18:50:50 Hugh Glaser wrote: > [...] > In the current practice, the site minted a URI for the book, and then > asserted owl:sameAs to other URIs - hopefully including mine, hidden in the > RDF about the site's URI. > > In the current SWCL, for example, (I think) if I ask ab

Demo Link: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Kingsley Idehen
All, Sponger based description of the book: Weaving the Web: The Original Design and Ultimate Destiny of the World Wide Web The main sponger page (a description of the actual HTML doc) is at: http://tr.im/Cemx . The foaf:primarytopic's value is the URI of a GoodRelations offering: http:/

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Kingsley Idehen
Martin Hepp (UniBW) wrote: I don't think so, because this would require that Sindice crawled the whole regular web and checked the Spongers for each URL (sic!). Martin, Or crawls the deeper Web of Linked Data via our proxy/wrapper URIs and ends up achieving what? The shallow Web is still chall

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Kingsley Idehen
Frederick Giasson wrote: Hi all, The Web of Linked Data shouldn't be about mass crawling (search engine style) etc... It has to be. How would you answer a query like "all offers for a book written by a German author" without crawling the relevant data sets? First question would be: w

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Kingsley Idehen
Olaf Hartig wrote: Hey, On Sunday 18 October 2009 09:37:14 Martin Hepp (UniBW) wrote: [...] So it will boil down to technology that combines (1) crawling and caching rather stable data sets with (2) distributing queries and parts of queries among the right SPARQL endpoints (whatever actual D

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Kingsley Idehen
Hugh Glaser wrote: Hi Guys, I am puzzled by the whole discussion, so will try to summarise to find out if I have some misunderstanding. It really is "just" about finding where the URIs are, and search engines are the game in town. We need to make it really easy for people to find the Linked Data

Re: ANN: alternative to cURL for debugging URIs

2009-10-18 Thread Olaf Hartig
Hello, Great to read all your comments on- and off-list. Thanks. We fixed the bug with ampersands in URIs and the problems that occured with browsers other than Firefox. We would also like to thank for your ideas and feature requests. We're discussing which of them we'll implement. Greetings,

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Hugh Glaser
On 18/10/2009 17:12, "Olaf Hartig" wrote: > On Sunday 18 October 2009 17:50:58 Hugh Glaser wrote: >> The SWCL-style approach works pretty well as long as the RDF you want about >> the URIs is the stuff you get by resolving. > > Right, that's the fundamental assumption. And that's what Linked D

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Olaf Hartig
On Sunday 18 October 2009 17:50:58 Hugh Glaser wrote: > The SWCL-style approach works pretty well as long as the RDF you want about > the URIs is the stuff you get by resolving. Right, that's the fundamental assumption. And that's what Linked Data is about. ;-) > It can be much more problematic

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Hugh Glaser
The SWCL-style approach works pretty well as long as the RDF you want about the URIs is the stuff you get by resolving. It can be much more problematic if the URI is in some site such as (a wrapped) Amazon, saying what is the price of a book identified by a publisher's URI. There are ways round th

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Olaf Hartig
Hey Giovanni, On Sunday 18 October 2009 16:01:41 Giovanni Tummarello wrote: > I'd say, if i understand well > > that that works only for queries where you need the extra dereferenced > data just "additionally" e.g. to add a label to your result se I'm not sure what you mean be "additionally" here

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Giovanni Tummarello
> A) The wrapper's Semantic Sitemap points you at the original Sitemap, and > says how it is doing the wrapping. And because you know how the wrapper is > behaving, you can process the standard Sitemap to get the information you > want about what the wrapping site provides. > Actually, the "slicing

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Hugh Glaser
Hi. On 18/10/2009 14:56, "Giovanni Tummarello" wrote: > Hi Hugh, thanks for your contribution > > > .. it turns out this discussion is in fact very very important and Agreed. > such feedback is indeed very useful > > if i just get a sitemap from sponger (which is wrapping a sitemap from > ano

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Giovanni Tummarello
I agree wihtt this, a combination of the 2, without into unrealistic services descriptions, is exactly its the question. its great to be talking about this. I'd be gladly have a chat about all this at ISWC for those who are there? Cheers Giovanni On Sun, Oct 18, 2009 at 8:37 AM, Martin Hepp (U

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Giovanni Tummarello
I'd say, if i understand well that that works only for queries where you need the extra dereferenced data just "additionally" e.g. to add a label to your result se if you need the remote, on the fly reference data to e.g. sort by price you'd have to fetch all from the remote site .. Gio On Sun

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Olaf Hartig
Hey, On Sunday 18 October 2009 09:37:14 Martin Hepp (UniBW) wrote: > [...] > So it will boil down to technology that combines (1) crawling and > caching rather stable data sets with (2) distributing queries and parts > of queries among the right SPARQL endpoints (whatever actual DB > technology th

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Giovanni Tummarello
Hi Hugh, thanks for your contribution .. it turns out this discussion is in fact very very important and such feedback is indeed very useful if i just get a sitemap from sponger (which is wrapping a sitemap from another site) then all i can do is really just crawling that sitemap which would cal

Re: The Power of Virtuoso Sponger Technology

2009-10-18 Thread Martin Hepp (UniBW)
Guys, the Web of Data cannot rely on mass data crawling of the whole Web but must combine cached data with federated on-demand queries. Structured data requires much faster update cycles than typical text-based Web indices. For example, Google and Yahoo can rely on the fact that "http://www.cn