Hello Sebastian,
thanks for the pointers, this is indeed a very interesting project that tie in neatly with what we want to achieve in Wikidata. I didn't read your paper in detail, but merely skimmed it, so I hope I have a reasonable understanding of your proposal.
We have not yet written down the use cases, and we are aware that this still needs to happen. I do think that your approach - especially with the context-hash-based URIs - is very promising.
We aim to start with a simple website-level scope for Web references, but personally I would be very happy if we could move down to the more fine-grained level that your tools support in the first year already, down to the very sentence that supports a statement in Wikidata. If we get this far, your approach seems like a very strong contender for representing this.
Just a few questions - as you note, it is easier if we all use the same standards, and so I want to ask about the relation to other related standards: * I understand that you dismiss IETF RFC 5147 because it is not stable enough, right? * what is the relation to the W3C media fragment URIs? Did not find a pointer there. * any plans of standardizing your approach?
We would strongly prefer to just use a standard instead of advocating contenders for one -- if one exists.
Cheers, Denny
2012/5/18 Sebastian Hellmann hellmann@informatik.uni-leipzig.de
Hello again, maybe the question, I asked was lost, as the text was TL;DR
I heard that, it is planned to track provenance of facts. e.g. Berlin has 3,337,000 citizens found here: http://www.worldatlas.com/**citypops.htmhttp://www.worldatlas.com/citypops.htm Do you have a place where the use case and the requirements are documented for this? Or is it out of scope? Will it be course grained, i.e. website level ? Or fine grained, i.e. text paragraph level? See e.g. how Berlin is highlighted here: http://pcai042.informatik.uni-**leipzig.de/~swp12-9/** vorprojekt/index.php?**annotation_request=http%3A%2F%** 2Fwww.worldatlas.com%**2Fcitypops.htm%23hash_4_30_** 7449e732716c8e68842289bf2e6667**d5_Berlin%2C%2520Germany%2520-**%25203%2Chttp://pcai042.informatik.uni-leipzig.de/~swp12-9/vorprojekt/index.php?annotation_request=http%3A%2F%2Fwww.worldatlas.com%2Fcitypops.htm%23hash_4_30_7449e732716c8e68842289bf2e6667d5_Berlin%2C%2520Germany%2520-%25203%2C in this very early prototype.
Could you give me a link were I can read more about any Wikidata plans towards this direction? Sebastian
On 05/16/2012 09:10 AM, Sebastian Hellmann wrote:
Dear all, (Note: I could not find the document, where your requirements regarding the tracking of facts on the web are written, so I am giving a general introduction to NIF. Please send me a link to the document that specifies your need for tracing facts on the web, thanks)
I would like to point your attention to the URIs used in the NLP Interchange Format (NIF). NIF-URIs are quite easy to use, understand and implement. NIF has a one-triple-per-annotation paradigm. The latest documentation can be found here: http://svn.aksw.org/papers/**2012/WWW_NIF/public/string_**ontology.pdfhttp://svn.aksw.org/papers/2012/WWW_NIF/public/string_ontology.pdf
The basic idea is to use URIs with hash fragment ids to annotate or mark pages on the web: An example is the first occurrence of "Semantic Web" on http://www.w3.org/**DesignIssues/LinkedData.htmlhttp://www.w3.org/DesignIssues/LinkedData.html as highlighted here: http://pcai042.informatik.uni-**leipzig.de/~swp12-9/** vorprojekt/index.php?**annotation_request=http%3A%2F%** 2Fwww.w3.org%2FDesignIssues%**2FLinkedData.html%23hash_10_**12_** 60f02d3b96c55e137e13494cf9a02d**06_Semantic%2520Webhttp://pcai042.informatik.uni-leipzig.de/~swp12-9/vorprojekt/index.php?annotation_request=http%3A%2F%2Fwww.w3.org%2FDesignIssues%2FLinkedData.html%23hash_10_12_60f02d3b96c55e137e13494cf9a02d06_Semantic%2520Web
Here is a NIF example for linking a part of the document to the DBpedia entry of the Semantic Web: <http://www.w3.org/**DesignIssues/LinkedData.html#**offset_717_729http://www.w3.org/DesignIssues/LinkedData.html#offset_717_729
a str:StringInContext ; sso:oen <http://dbpedia.org/resource/**Semantic_Web<http://dbpedia.org/resource/Semantic_Web>>.
We are currently preparing a new draft for the spec 2.0. The old one can be found here: http://nlp2rdf.org/nif-1-0/
There are several EU projects that intend to use NIF. Furthermore, it is easier for everybody, if we standardize a Web annotation format together. Please give feedback of your use cases. All the best, Sebastian
-- Dipl. Inf. Sebastian Hellmann Department of Computer Science, University of Leipzig Projects: http://nlp2rdf.org , http://dbpedia.org Homepage: http://bis.informatik.uni-**leipzig.de/SebastianHellmannhttp://bis.informatik.uni-leipzig.de/SebastianHellmann Research Group: http://aksw.org
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