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.li...@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.mattm...@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.mattm...@nasa.gov > WWW: http://sunset.usc.edu/~mattmann/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Adjunct Assistant Professor, Computer Science Department > University of Southern California, Los Angeles, CA 90089 USA > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >
