Hi, nrl:maxCardinality is important for performance. If you know that an instance can have only one value for a property, set the maxCardinality to 1. Otherwise you don't need to set it, by default properties are multivalued.
tracker:weight boost the results found on that property, but it is relevant only for full text search IIRC. I would let it to the very end, once you have the ontology and insert some data in tracker, try some search and fine-tune the weight if needed. Regards, Ivan On Wed, Feb 12, 2014 at 6:12 AM, Alan Pater <alan.pa...@gmail.com> wrote: > Great, thanks for the detailed reply! > > Another question. Do I need to use fields like nrl:maxCardinality and > tracker:weight? Those appear in the dc.ontology, but I am not 100% > clear on what they are used or needed for. > > Alan > > On Wed, Feb 12, 2014 at 3:57 AM, Philip Van Hoof <phi...@codeminded.be> > wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Alan Pater schreef op 12/02/2014 2:35: > >> I am creating an ontology for Darwin Core (DwC) XMP metadata. > >> > >> What steps are needed to enable a new ontology in tracker? > > > > - - git branch dwc-ontology > > - - git checkout dwc-ontology > > - - Write the ontology in our Turtle format. Call it 94-dwc.ontology > > - Ensure that nao:lastModified is correct in the > > tracker:Ontology stuff and that it's at the top of > > the file right underneath the @prefix lines. > > > > - - Write a 94-dwc.description file > > - - Put it in data/ontologies > > - - Adapt Makefile.am (add to config_DATA) > > - - make && make install > > - - Restart tracker-store with -v 3, you should see your > > ontology being added and created. > > - - Test thoroughly with tracker-sparql. Noticing that making > > changes afterwards is not always possible; depending on what > > kind of changes you make you might have to add ontology change > > coping infrastructure (which is a horror in complexity). > > - - git add 94-dwc.description 94-dwc.ontology Makefile.am > > - - git commit > > - - git format-patch master > > > > Kind regards, > > > > Philip > > > > -----BEGIN PGP SIGNATURE----- > > Version: GnuPG v2.0.20 (MingW32) > > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > > > iQEcBAEBAgAGBQJS+zeUAAoJEEP2NSGEz4aDo3oH/jUm2ICf239sKo0Z71SRnxgg > > BJ2V+Me47wuuhEd2whufc0lhmcNk6EjDWI5YklpmtUD0Y3YQ3ME0n4wkf/X11Wq/ > > O6WRyGZajLSET4FtSiRCdqoLUqOkp4BViy6qywTMCDMIYAW8WEMqKkchhBLEV6Gy > > RpPQJFOEo18lbNJSn17cJPZZf+sScvE641wnRz4T2Gh7xY0tkCHda0XYj5NUQstG > > vsG76RzXl+qWEm8UhvHps4hp1PzyUrOqF4yZ5VkAv0hup3aWI8yLlpxaCjydTM6E > > bdzaT7E9r7l3j+KQvykjb+EOIuJrsVeItHJH4VUqRUDALcSt5iyUpSICLsKo5Vo= > > =jlMS > > -----END PGP SIGNATURE----- > _______________________________________________ > tracker-list mailing list > tracker-list@gnome.org > https://mail.gnome.org/mailman/listinfo/tracker-list >
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