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 We also have an unpublished article [5] which describes GeoSPARQL, 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