Semantic validation of GML-based geospatial data

General awareness for data quality of virtual 3d city models is increasing with more complex application scenarios. Investigations and algorithms for validation of geometric properties show the importance of clearly specified data quality of geometry features for downstream applications such as simulation or building energy demand estimation. Beyond geometry, semantic information is a relevant part of information models (such as CityGML or XPlanGML) and has a wide influence on the usability of the data. In this paper, approaches to specify and validate rules and restrictions for semantic information according to the conformance requirements of the CityGML 2.0 standard and XPlanGML are discussed. In addition, a sample use case referring to the product specification for 3D models of AdV (German working group of surveying authorities) is presented.