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 We also have an unpublished article [5] which describes GeoSPARQL, 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/
