Hi Alexandru,
Unfortunately I am not sure it's that simple.- The coordinates in the infobox
have indeed wrong in term of "absolute" values (i.e. wrong latitude but correct
longitude).- However, the coord. displayed at the top-right of the page are
correct (37_48_49_S_144_57_47_E) and Melbourne is correctly mapped.
This particular place uses the "Infobox_Australian_place" template [1], which
seems to be customized for Australian places (i.e. southern hemisphere). It
looks like those Australian places were populated with relative coordinates
(i.e. not absolute one), and it looks like Wikipedia is aware of this
peculiarity.
Re: DBpedia and other geo-extractors, they probably have to take those
peculiarities into account to get higher precision.=> Thoughts?
N.
Reference:[1]: http://en.wikipedia.org/wiki/Template:Infobox_Australian_place
On Monday, September 22, 2014 11:17 AM, Alexandru Todor
<to...@inf.fu-berlin.de> wrote:
Hi Nicolas,
From Wikipedia wiki source, the part where you press edit on top of the page
| latd =37 |latm =48 |lats =49
| longd =144 |longm =57 |longs =47
The correct entry in Wikipedia should be
| latd =-37 |latm =48 |lats =49
| longd =144 |longm =57 |longs =47
This is an error in Wikipedia not in DBpedia, you can correct it by editing
the source of the Melbourne Wiki page.
Cheers,
Alexandru
On 09/22/2014 07:45 PM, Nicolas Torzec wrote:
Hi, It looks like an old problem with the geoparsers in DBpedia is still not
resolved.
Back in 2012, the geo-coordinates extractors were not leveraging the
hemisphere information correctly [3], causing some places from the southern
hemisphere (e.g. Melbourne) to appear in the northern hemisphere. Apparently it
is still there...
Compare the coordinates for Melbourne in Wikipedia [1] and DBpedia [2].
[1]: http://sourceforge.net/p/dbpedia/mailman/message/29588905/
[2]: http://en.wikipedia.org/wiki/Melbourne
From Wikipedia: coordinates
={{Coord|37|48|49|S|144|57|47|E|type:city(4000000)_region:AU-VIC|display=inline,title}}
From DBpedia: | latd =37 |latm =48 |lats =49 | longd =144 |longm =57
|longs =47
Melbourne is correctly placed on Wikipedia but incorrectly placed in DBpedia.
Nicolas.
Reference: [3]: initial problem here http://live.dbpedia.org/page/Melbourne.
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