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Re: Streamlining the OA Model oax:range vs, endIndex

From: Paolo Ciccarese <paolo.ciccarese@gmail.com>
Date: Fri, 21 Sep 2012 08:17:33 -0400
Message-ID: <CAFPX2kDBH6-rQa7Y7way1n9QRn2pTN_uoz36wQzmqJJC-ka2Ug@mail.gmail.com>
To: Sebastian Hellmann <hellmann@informatik.uni-leipzig.de>
Cc: Randall Leeds <randall.leeds@gmail.com>, Robert Sanderson <azaroth42@gmail.com>, public-openannotation <public-openannotation@w3.org>
Hi Sebastian,
that observation has been made many times by people in the text mining
It really seems expensive to calculate the 'end' through the range given
the high number of annotations that can be machine generated.

I think I am in favor of that change at this point.

Maybe we can introduce a new selector with begin/end so that who has
already implemented begin and offset will be still ok?


On Fri, Sep 21, 2012 at 3:38 AM, Sebastian Hellmann <
hellmann@informatik.uni-leipzig.de> wrote:

> Hi all,
> the meeting was really interesting and I learned a lot. For NIF 2.0, I
> will draft such a document specifying a mapping, between the two models.  I
> think the most difficult part here are the mappings between the selectors.
> Here is an initial question:
> In http://www.openannotation.org/**spec/extension/#SelectorOffset<http://www.openannotation.org/spec/extension/#SelectorOffset>was there any strong reason to use oax:range instead of something like end
> index.
> When querying with SPARQL, you can:
> with range: order all selections by length, get all selection of a
> specific length, query if any annotation begin at a certain position
> with begin, end index: query if any annotation are within a certain
> region, query for overlaps and locality of annotations, i.e. is there an
> annotation in this paragraph?
> Addition/subtraction is quite an expensive aggregate. So what do you think
> is the more common use case. I would vote for begin and end index and
> querying overlaps and inclusion. Maybe, we can do it similar to Apache
> Stanbol, which also uses endIndex.
> Any opinions on this? Should I copy/paste and open an issue in the Wiki?
> Or could there be consensus right the first time?
> Sebastian
> Am 15.09.2012 00:54, schrieb Randall Leeds:
>> On Wed, Aug 1, 2012 at 1:18 PM, Robert Sanderson <azaroth42@gmail.com>
>> wrote:
>>> I would like to propose a joint work item to create a mapping document
>>> between NIF and OA, if you think that would be useful?
>> I think it would be invaluable to people discovering OA and NIF to
>> have such a document.
>> +1
> --
> Dipl. Inf. Sebastian Hellmann
> Department of Computer Science, University of Leipzig
> Events:
> * http://sabre2012.infai.org/**mlode <http://sabre2012.infai.org/mlode>(Leipzig, Sept. 23-24-25, 2012)
> * http://wole2012.eurecom.fr (*Deadline: July 31st 2012*)
> Projects: http://nlp2rdf.org , http://dbpedia.org
> Homepage: http://bis.informatik.uni-**leipzig.de/SebastianHellmann<http://bis.informatik.uni-leipzig.de/SebastianHellmann>
> Research Group: http://aksw.org

Dr. Paolo Ciccarese
Biomedical Informatics Research & Development
Instructor of Neurology at Harvard Medical School
Assistant in Neuroscience at Mass General Hospital
+1-857-366-1524 (mobile)   +1-617-768-8744 (office)

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Received on Friday, 21 September 2012 12:18:04 UTC

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