Dr. K  S Rajan and his students Nishith Maheshwari and Srishti Srivastava published an article on Development of an Indoor Space Semantic Model and Its Implementation as an Indoor GML Extension  in the special issue Multidimensional and Multiscale GIS’ of the ISPRS International Journal of Geo-Information on 27 July.

Geospatial data capture and handling of indoor spaces is increasing over the years and has had a varied history of data sources ranging from architectural and building drawings to indoor data acquisition approaches. While these have been more data format and information driven primarily for the physical representation of spaces, it is important to note that many applications look for the semantic information to be made available. This paper proposes a space classification model leading to an ontology for indoor spaces that accounts for both the semantic and geometric characteristics of the spaces. Further, a space semantic model is defined, based on this ontology, which can then be used appropriately in multiple applications. To demonstrate the utility of the model, they also present an extension to the IndoorGML data standard with a set of proposed classes that can help capture both the syntactic and semantic components of the model. It is expected that these proposed classes can be appropriately harnessed for use in diverse applications ranging from indoor data visualization to more user customised building evacuation path planning with a semantic overtone.

More details at: https://www.mdpi.com/2220-9964/8/8/333