very nice! On Tue, Sep 13, 2011 at 11:46 AM, Rob Battle <[email protected]> wrote: > It is open sourced under the BSD License > On Sep 13, 2011, at 11:43 AM, Marco Neumann wrote: > >> what's your license model for Parliament? >> >> >> On Tue, Sep 13, 2011 at 11:37 AM, Rob Battle <[email protected]> wrote: >>> Parliament implements the Jena graph interface. Query access to the >>> indexes is provided via ARQ property functions. Data is added to the >>> indexes via a mechanism that wraps a Jena GraphListeners In fact, our >>> indexes should be work on non-Parliament graphs, although we do some query >>> optimization that relies on information provided by our Parliament graph. >>> >>> >>> -rob >>> >>> On Sep 13, 2011, at 11:34 AM, Marco Neumann wrote: >>> >>>> I've organized a session with Dave Kolas at MIT/ W3C [1] earlier this >>>> year and Parliament looks indeed great, it already uses PostGIS for >>>> the spatial queries. I am not sure how Parliament relates to the Jena >>>> API though. >>>> >>>> [1] http://www.vimeo.com/23850413 >>>> >>>> >>>> On Tue, Sep 13, 2011 at 11:28 AM, Rob Battle <[email protected]> wrote: >>>>> Hi, >>>>> >>>>> As Dave mentioned, Parliament [1] supports geospatial and temporal >>>>> indexing. We index data using the geo-owl ontologies [2] for geospatial >>>>> data and OWL time [3] for temporal data (although only ProperIntervals >>>>> and DateTimeIntervals are supported, not DateTimeInstants). The spatial >>>>> index supports predicates corresponding to RCC-8 and OGC simple features >>>>> as property functions and can use PostGIS or a memory-mapped r-tree as an >>>>> index. >>>>> >>>>> If you are interested, Parliament also has preliminary support for the >>>>> proposed OGC GeoSPARQL [4] standard for geospatial queries over RDF (note >>>>> that this is different from http://www.geosparql.org). >>>>> We also have an unpublished article [5] which describes GeoSPARQL, >>>>> evaluates some existing research/implementations in the geospatial >>>>> semantic web, and describes the GeoSPARQL implementation in Parliament. >>>>> >>>>> The Parliament geosparql branch is located at [6] >>>>> >>>>> -rob >>>>> >>>>> [1] http://parliament.semwebcentral.org >>>>> [2] http://www.w3.org/2005/Incubator/geo/XGR-geo/#owl >>>>> [3] http://www.w3.org/TR/owl-time/ >>>>> [4] http://portal.opengeospatial.org/files/?artifact_id=44722 >>>>> [5] >>>>> http://semwebcentral.org/scm/viewvc.php/*checkout*/branches/geosparql/paper/swjarticle.pdf?root=parliament >>>>> [6] https://projects.semwebcentral.org/svn/parliament/branches/geosparql >>>>> (username/password anonsvn) >>>>> >>>>> On Sep 13, 2011, at 8:17 AM, Dave Reynolds wrote: >>>>> >>>>>> There is also Parliament [1] which offers both geospatial and temporal >>>>>> indexing graphs. >>>>>> >>>>>> Dave >>>>>> >>>>>> [1] http://parliament.semwebcentral.org/ >>>>>> >>>>>> >>>>>> On Tue, 2011-09-13 at 13:08 +0100, Paolo Castagna wrote: >>>>>>> Hi Alex, >>>>>>> great to hear that, you are welcome. >>>>>>> >>>>>>> Something similar using Lucene Spatial capabilities instead of >>>>>>> a proper GIS is here (it's just a less than two days hack): >>>>>>> https://github.com/castagna/GeoARQ >>>>>>> >>>>>>> I was planning to post something along the lines of "making >>>>>>> easier to plug LARQ or similar into ARQ", but unfortunately I do >>>>>>> not a good idea (yet). >>>>>>> >>>>>>> It would be good to enable third parties to add their own property >>>>>>> functions (that's possible) which use custom indexes and need to >>>>>>> update those indexes as triples/quads are added/removed to the >>>>>>> underlying RDF store. >>>>>>> >>>>>>> More on this later, in the meantime: welcome. >>>>>>> >>>>>>> Paolo >>>>>>> >>>>>>> Alexander Dutton wrote: >>>>>>>> -----BEGIN PGP SIGNED MESSAGE----- >>>>>>>> Hash: SHA1 >>>>>>>> >>>>>>>> Hi all, >>>>>>>> >>>>>>>> We've currently got a lot of (simple) geospatial data in >>>>>>>> <http://data.clarosnet.org/> (served behind the scenes by Fuseki). >>>>>>>> >>>>>>>> We'd like to do some geospatial indexing magic, and were wondering >>>>>>>> about writing something a bit like LARQ that will pull out things like >>>>>>>> geo:Points and WKT literals, place them in a PostGIS-flavoured DB, and >>>>>>>> then implements something like GeoSPARQL (<http://geosparql.org/>). >>>>>>>> >>>>>>>> Has anyone started doing this or something similar? I'm happy to give >>>>>>>> it a go and I'm sure my employer would be happy to contribute it back >>>>>>>> to Jena and the ASF. My plan was to go through the LARQ codebase to >>>>>>>> work out how it hooks itself in, and use that as a model. >>>>>>>> >>>>>>>> Yours, >>>>>>>> >>>>>>>> Alex >>>>>>>> >>>>>>>> - -- >>>>>>>> Alexander Dutton >>>>>>>> Metamorphoses Project Developer, Claros >>>>>>>> Oxford University Computing Services, ℡ 01865 (6)13483 >>>>>>>> -----BEGIN PGP SIGNATURE----- >>>>>>>> Version: GnuPG v1.4.11 (GNU/Linux) >>>>>>>> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ >>>>>>>> >>>>>>>> iEYEARECAAYFAk5vQbgACgkQS0pRIabRbjC9QACfTZtTcFIhDXjWPR+MpEWunKkt >>>>>>>> 38oAnR5n+oi1nuTZAfRdOrF2mcOac2Ck >>>>>>>> =r1dj >>>>>>>> -----END PGP SIGNATURE----- >>>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> -- >>>> Marco Neumann >>>> KONA >>>> >>>> --- >>>> Join us at the Semantic Web Media Summit in New York City for an >>>> exciting event on 14 September 2011 >>>> http://www.lotico.com/evt/swmsNYC2011/ >>> >>> >> >> >> >> -- >> Marco Neumann >> KONA >> >> --- >> Join us at the Semantic Web Media Summit in New York City for an >> exciting event on 14 September 2011 >> http://www.lotico.com/evt/swmsNYC2011/ > >
-- Marco Neumann KONA --- Join us at the Semantic Web Media Summit in New York City for an exciting event on 14 September 2011 http://www.lotico.com/evt/swmsNYC2011/
