DBpedia Bloopers
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Transcript of DBpedia Bloopers
Bloopers
Fariz Dararifadirra _a.t_ _d.o.t_ com
@mrlogix
Link to these slides: http://www.slideshare.net/fadirra/dbpedia-bloopers
CC BY - NC - ND
DBpedia Bloopers 2
Bloopers Types
• Redundant Properties• Incorrect Values• Confusing Properties• Different with Corresponding Wiki Pages
DBpedia Bloopers 3
Redundant Properties
• Properties that have the same intended meaning but are expressed differently
• Example: dbpprop:placeOfBurial vs dbpprop:placeofburial
DBpedia Bloopers 4
Redundant Properties (cont.)
http://dbpedia.org/page/Italy (24 Sep 13):
vs
dbpprop:placeOfBurial vs dbpprop:placeofburial
DBpedia Bloopers 5
Redundant Properties (cont.)
http://dbpedia.org/page/Italy (24 Sep 13):
dbpprop:title vs dbpprop:titles
DBpedia Bloopers 6
Redundant Properties (cont.)
http://dbpedia.org/page/Keema (24 Sep 13):
dbpedia-owl:type vs rdf:type
DBpedia Bloopers 7
Incorrect Values
• Good Subject, Good Predicate, Bad Object• Example (http://dbpedia.org/page/Johannesburg -
24 Sep 13):
DBpedia Bloopers 8
Incorrect Values (cont.)
• http://dbpedia.org/page/Indonesia (24 Sep 13):
“Flag of Indonesia.svg” should be an image URI
DBpedia Bloopers 9
Incorrect Values (cont.)
• http://dbpedia.org/page/Indonesia (24 Sep 13):
Not clear why “National ideology: Pancasila” is used as a value for dbpprop:nationalMotto
DBpedia Bloopers 10
Incorrect Values (cont.)
• http://dbpedia.org/page/Coca-Cola_Amatil (24 Sep 13):
Chief_executive_officer is too generalto be a value for keyPerson
DBpedia Bloopers 11
Incorrect Values (cont.)
• http://dbpedia.org/page/Komodo_Airport (24 Sep 13):
Indonesia should not be a city
DBpedia Bloopers 12
Incorrect Values (cont.)
• http://dbpedia.org/page/Stanley_Kubrick (24 Sep 13):
“Jack Nicholson” - Kubrick
DBpedia Bloopers 13
Incorrect Values (cont.)
• http://dbpedia.org/page/Monty_Python (24 Sep 13):
The strings “John Cleese” and “Terry Gilliam” are also its members
DBpedia Bloopers 14
Incorrect Values (cont.)
• http://dbpedia.org/page/Air_France_Flight_1611 (24 Sep 13):
Whereas on its corresponding Wiki page (http://en.wikipedia.org/wiki/Air_France_Flight_1611):
DBpedia Bloopers 15
Incorrect Values (cont.)
• http://dbpedia.org/page/Tom_Cat (24 Sep 13):
Should be clear why it is incorrect :)
DBpedia Bloopers 16
Incorrect Values (cont.)
• http://dbpedia.org/page/Farid_Kamil (24 Sep 13):
Male is an occupation? Nice, can I resign? :)
DBpedia Bloopers 17
Incorrect Values (cont.)
• Example (at http://dbpedia.org/page/Apa_Kata_Hati):*it’s a movie
It’s released on the 29 of [guess the month + year]
DBpedia Bloopers 18
Incorrect Values (cont.)
http://dbpedia.org/data/Apa_Kata_Hati.rdf (24 Sep 13):
http://dbpedia.org/data/Dewa_Cinta.rdf (24 Sep 13):
vs
Is Melayu = Malay? If so, why don’t just use Malay only?
DBpedia Bloopers 19
Confusing Properties
• Some properties are unclear, their intended meaning is not really described.
• Example at http://dbpedia.org/page/Italy - 24 Sep 13:
• What is dbpprop:titlebar? Anybody know?
DBpedia Bloopers 20
Confusing Properties (cont.)
• http://dbpedia.org/page/Italy (24 Sep 13):
DBpedia Bloopers 21
Confusing Properties (cont.)
• http://dbpedia.org/page/Diamond (24 Sep 13):
DBpedia Bloopers 22
Different with Wiki Pages
Wiki pages and their corresponding DBpedia data are sometimes quite different.
DBpedia Bloopers 23
Different with Wiki Pages (cont.)
• http://dbpedia.org/page/Aqua (24 Sep 13):
compared to ...
DBpedia Bloopers 24
Different with Wiki Pages (cont.)
• Wiki page (http://en.wikipedia.org/wiki/Aqua - 24 Sep 13):
DBpedia Bloopers 25
Different with Wiki Pages (cont.)
• http://dbpedia.org/page/Nasi_kebuli (24 Sep 13):
Here the (main) ingredient is only rice
compared to ...
DBpedia Bloopers 26
Different with Wiki Pages (cont.)
• Wiki page (http://en.wikipedia.org/wiki/Nasi_kebuli -
24 Sep 13):
Here the (main) ingredients are at least of three kinds: rice, minyak samin (ghee), and goat meat
DBpedia Bloopers 27
Notes
• DBpedia data is derived from Wikipedia. Consequently, errors on Wikipedia might still exist on DBpedia.
• Perhaps Natural Language techniques can help to improve DBpedia.
• After all, DBpedia is one of the coolest SemWeb applications!
DBpedia Bloopers 28
Credits
• Icons– https://www.iconfinder.com/icons/34248/download/png/128– http://wiki.dbpedia.org/images/dbpedia_logo.png
• dbpedia.org