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From Robert Vesse <rve...@yarcdata.com>
Subject Re: Implementing GeoSPARQL
Date Tue, 03 Apr 2012 18:23:04 GMT
So I think was Chris is asking is whether your implementation of GeoSPARQL is written in such
a way that it is easily divorce able from the spatial index backend i.e. could you contribute
the code that implements all the relevant functions in such a way that we could plug in alternative
backends and/or libraries for spatial representation and calculation?

Rob

On Apr 3, 2012, at 10:59 AM, Mattmann, Chris A (388J) wrote:

> Hey Rob,
> 
> Thanks for the FYI on this. I will check it out. I would still like to figure out how
to implement GeoSPARQL 
> with SIS if for nothing else than to harden SIS and to make it better in a SIS selfish
way :) I am out to make
> it an awesome ALv2 licensed spatial implementation.
> 
> Regarding Parliament, what are you guys using for your spatial library? Is it something
that is ALv2? If not,
> would you consider SIS as a potential alternative to whatever spatial library you guys
are using? Or, should I 
> ask, are you part of the Parliament project?
> 
> Thanks for the FYI again.
> 
> Cheers,
> Chris
> 
> On Apr 3, 2012, at 10:11 AM, Rob Battle wrote:
> 
>> Chris,
>> 
>> I just wanted to let you know that the Parliament [1] triple store (a triple store
that is built with a Jena interface) has a mostly complete implementation of GeoSPARQL.  We
have implemented the property functions and filter functions for GeoSPARQL on top of our existing
spatial index.  For more info, you can check out [2].  
>> 
>> [1] http://parliament.semwebcentral.org
>> [2] http://geosparql.bbn.com
>> 
>> -rob
>> 
>> On Apr 2, 2012, at 10:10 PM, Mattmann, Chris A (388J) wrote:
>> 
>>> Thanks for the FYI on this, Lewis!
>>> 
>>> Cheers,
>>> Chris
>>> 
>>> On Apr 2, 2012, at 4:29 AM, Lewis John Mcgibbney wrote:
>>> 
>>>> Hi,
>>>> 
>>>> Thought I would chime in here as it's a very interesting thread and I think
>>>> this is relevant.
>>>> 
>>>> On Mon, Apr 2, 2012 at 10:01 AM, Paolo Castagna <
>>>> castagna.lists@googlemail.com> wrote:
>>>> 
>>>>> 
>>>>> I see two main use cases here:
>>>>> 
>>>>> 1. Crawling the web and build a dataset of statements with locations.
>>>>> 2. Indexing a dataset with statements with locations and extend SPARQL
to
>>>>> perform queries over it.
>>>>> 
>>>>> For 1. you need Any23|Tika (and a crawler) and, eventually, an RDF store.
>>>>> 
>>>>> I will begin working on this once we release Any23 0.7.0-incubating and
>>>> the library is available on maven central. It will be a step in the right
>>>> direction to achieving (part) of an overall potential use case as above.
>>>> Any23/Tika wrapped plugin for Apache Nutch. It would be really great to
>>>> work towards the pluggable datastores as you said Paolo, and yes this is
>>>> also something which is required outside of RDF stores, but as you mention
>>>> this is another story which we need to focus on separately.
>>>> 
>>>> I'll certainly get in touch when the above is done to update you guys.
>>>> 
>>>> Lewis
>>> 
>>> 
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>> Chris Mattmann, Ph.D.
>>> Senior Computer Scientist
>>> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
>>> Office: 171-266B, Mailstop: 171-246
>>> Email: chris.a.mattmann@nasa.gov
>>> WWW:   http://sunset.usc.edu/~mattmann/
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>> Adjunct Assistant Professor, Computer Science Department
>>> University of Southern California, Los Angeles, CA 90089 USA
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>> 
>> 
> 
> 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Chris Mattmann, Ph.D.
> Senior Computer Scientist
> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
> Office: 171-266B, Mailstop: 171-246
> Email: chris.a.mattmann@nasa.gov
> WWW:   http://sunset.usc.edu/~mattmann/
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Adjunct Assistant Professor, Computer Science Department
> University of Southern California, Los Angeles, CA 90089 USA
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 


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