Sean, I would agree that somehow agreeing on a complete set of global feature types is overambitious, but it is still important to capture local feature concepts and try to express mappings between them, both in space and in time. That said, any progress made in a common core of concepts will make such a set of tasks easier, and Geonames is as good a place as any to start. Perhaps starting by identifying those feature types which have the widest usage within Geonames itself.
-Josh On Jun 25, 2012, at 11:58 AM, Sean Gillies <sean.gill...@gmail.com> wrote: > Josh (and all), > > IIRC, in our gazetteering session at the 2011 AAG a panel concluded that the > era of global place or feature type taxonomies was over. Do you think that's > still a valid conclusion? Should schema.org be advised to stay away from this > area? > > On Sat, Jun 23, 2012 at 11:20 AM, Joshua Lieberman <j...@oklieb.net> wrote: > > > >> >> >> >> ... so what might we say of it in Schema.org? >> >> Well, maybe we would say it's an Island? Pretty tough, >> http://schema.org/Landform has Volcano and Continent but no island. >> Are there standard medium-sized lists of expected values we should be >> using here? > > From Geonames.org: > ISL island a tract of land, smaller than a continent, surrounded by water > at high water > ISLET islet small island, bigger than rock, smaller than island. > ISLF artificial island an island created by landfill or diking and > filling in a wetland, bay, or lagoon > ISLM mangrove island a mangrove swamp surrounded by a waterbody > ISLS islands tracts of land, smaller than a continent, surrounded by water > at high water > ISLT land-tied island a coastal island connected to the mainland by > barrier beaches, levees or dikes > ISLX section of island > ISTH isthmus a narrow strip of land connecting two larger land > masses and bordered by water > >> >> Ok so picking from http://schema.org/Place ... let's go with >> http://schema.org/TouristAttraction. Maybe we'll describe the island, >> and then use Place's containedIn relation to describe the city (also >> called Korcula) that's on the island. >> >> So, it's a thing of type http://schema.org/TouristAttraction ... it >> has a 'geo' property pointing to a thing that is of type >> http://schema.org/GeoShape ... which in turn has a 'polygon' property >> whose value is the Text, >> >> "17.052154541015, 42.984695434571 17.108459472656, 42.969589233399 >> 17.140045166015, 42.962722778321 17.166137695312, 42.942123413087 >> 17.181243896484, 42.929763793946 17.212829589844, 42.922897338868 >> 17.208709716797, 42.898178100587 17.177124023437, 42.898178100587 >> 17.090606689453, 42.895431518555 16.964263916015, 42.911911010743 >> 16.839294433594, 42.87208557129 16.833801269531, 42.888565063477 >> 16.732177734375, 42.895431518555 16.725311279297, 42.892684936524 >> 16.670379638672, 42.910537719727 16.656646728515, 42.896804809571 >> 16.618194580078, 42.927017211915 16.658020019531, 42.95997619629 >> 16.658020019531, 42.962722778321 16.603088378906, 43.001174926758 >> 16.658020019531, 43.008041381837 16.857147216797, 42.979202270508 >> 17.052154541015, 42.984695434571". >> >> As discussed earlier, the first and last pairs are identical. >> >> I could write this out long-hand in Microdata or RDFa Lite, but the >> basic model is the key concern. I think we're getting somewhere, >> thanks for your help! >> >> Nearby in the Web, Wikipedia has pages for both island and city, >> http://en.wikipedia.org/wiki/Kor%C4%8Dula and >> http://en.wikipedia.org/wiki/Kor%C4%8Dula_(town) >> >> It's also btw the alleged-birthplace-of >> http://en.wikipedia.org/wiki/Marco_Polo but let's get the basics >> working first :) >> >> cheers, >> >> Dan > > _______________________________________________ > Geowanking mailing list > Geowanking@geowanking.org > http://geowanking.org/mailman/listinfo/geowanking_geowanking.org > > > > > -- > Sean Gillies
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