A range violation error is a problem when an object of a triple does not have a type required by the range of the triple's predicate. Based on our observation, 18.7% of DBpedia triples whose predicate is a mapping-based object property with a defined range are suffering from this kind of error. These errors could be probably due to
- The predicate is incorrect and should be replaced
- The range of the predicate is incorrect and should be refined
- The object is incorrect and should be replaced
- The object misses the correct (required) type
In this work, we focus only on erroneous triples that are due to incorrect objects. For example,
| Subject | Predicate | Object | Required Type |
|---|---|---|---|
| dbr:Sedo | dbo:locationCountry | dbr:Cologne | dbo:Country |
| dbr:Safi_Airways | dbo:targetAirport | dbr:New_Delhi | dbo:Airport |
| dbr:Stewart_Steven | dbo:employer | dbr:Daily_Mail | dbo:Organisation |
One way to fix these errors is replacing the incorrect objects with the correct objects which have the required types. For instance,
- dbr:Cologne ⇒ dbr:Germany
- dbr:New_Delhi ⇒ dbr:Indira_Gandhi_International_Airport
- dbr:Daily_Mail ⇒ dbr:Daily_Mail_and_General_Trust
Datasets
The eight datasets we publish on this page were used to evaluate our work [1]. Each of them is a csv file containing one hundred erroneous triples of a particular object property p (in DBpedia) together with their correct objects ans which we manually find based on the information from corresponding Wikipedia pages. The eight properties and their ranges are
| Property p | Range (rp) |
|---|---|
| dbo:locationCountry | dbo:Country |
| dbo:language | dbo:Language |
| dbo:targetAirport | dbo:Airport |
| dbo:routeEnd | dbo:RouteOfTransportation |
| dbo:formerTeam | dbo:SportsTeam |
| dbo:college | dbo:EducationalInstitution |
| dbo:employer | dbo:Organisation |
| dbo:birthPlace | dbo:Place |
File Format
s,p,o,answer
Download
Contact
Piyawat Lertvittayakumjorn: 
Ryutaro Ichise: 
Reference
- Piyawat Lertvittayakumjorn, Natthawut Kertkeidkachorn, Ryutaro Ichise. Resolving Range Violations in DBpedia. In Proceedings of 7th Joint International Semantic Technology Conference (JIST). 2017