Re: [Dbpedia-discussion] Problem with geo-coordinate extraction in DBpedia

2014-09-25 Thread Dimitris Kontokostas
On Tue, Sep 23, 2014 at 9:06 PM, Nicolas Torzec wrote: > So it confirms that the data is coming from the Infobox template and > handled directly at the template level... > > I agree with the necessity of interpreting templates recursively in > Infoboxes. We actually had to add a similar feature i

Re: [Dbpedia-discussion] Problem with geo-coordinate extraction in DBpedia

2014-09-23 Thread Nicolas Torzec
So it confirms that the data is coming from the Infobox template and handled directly at the template level... I agree with the necessity of interpreting templates recursively in Infoboxes.  We actually had to add a similar feature in our Wikipedia structured data extraction pipeline. It has gre

Re: [Dbpedia-discussion] Problem with geo-coordinate extraction in DBpedia

2014-09-22 Thread Dimitris Kontokostas
Looking at the template source we find the following: {{Geobox coor|{{*#expr:abs*({{{latitude|{{{latd|}})}}|{{{latm|}}}|{{{lats|}}}| *S* which means that they don't care about the sign, they just take the absolute value and add 'S' at the end and later they embed the coordinates template.

Re: [Dbpedia-discussion] Problem with geo-coordinate extraction in DBpedia

2014-09-22 Thread Alexandru Todor
Hi Nicolas, I don't think the geo information you see in the top-right corner of the parsed wiki page actually comes from the article. I think it actually comes from another wikimedia project or geonames. I see 2 possible ways for us to fix it 1) Correct the information in wikipedia by restructur

Re: [Dbpedia-discussion] Problem with geo-coordinate extraction in DBpedia

2014-09-22 Thread Nicolas Torzec
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 i

Re: [Dbpedia-discussion] Problem with geo-coordinate extraction in DBpedia

2014-09-22 Thread Alexandru Todor
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 Wiki

[Dbpedia-discussion] Problem with geo-coordinate extraction in DBpedia

2014-09-22 Thread Nicolas Torzec
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