Collaborative Creation of Semantic Pointsof Interest as Linked Data on the MobilePhone

The novel mobile application csxPOI (short for: collabora-tive, semantic, and context-aware points-of-interest) enables its usersto collaboratively create, share, and modify semantic points of interest(POI). Semantic POIs describe geographic places with explicit semanticproperties of a collaboratively created ontology. As the ontology includesmultiple subclassications and instantiations and as it links to DBpedia,the richness of annotation goes far beyond mere textual annotations suchas tags. With the intuitive interface of csxPOI, users can easily create,delete, and modify their POIs and those shared by others. Thereby, theusers adapt the structure of the ontology underlying the semantic annotationsof the POIs. Data mining techniques are employed to clusterand thus improve the quality of the collaboratively created POIs. Thesemantic POIs and collaborative POI ontology are published as LinkedOpen Data.[...]