| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T128 |
0-133 |
Sentence |
denotes |
There were no specific standards in the field of indoor geospatial modelling until the OGC standard IndoorGML was introduced in 2014. |
| T129 |
134-295 |
Sentence |
denotes |
The OGC IndoorGML intentionally focused on modelling indoor spaces using connected dual graphs for navigation purposes whilst considering various semantics [46]. |
| T130 |
296-428 |
Sentence |
denotes |
OGC IndoorGML standard specifies an open data model and Extensible Markup Language (XML) schema for indoor spatial information [46]. |
| T131 |
429-567 |
Sentence |
denotes |
Indoor space is comprised of connected constructs such as rooms, corridors, stairs, and elevators, all of which can be considered “Cells”. |
| T132 |
568-756 |
Sentence |
denotes |
This sets it apart from other standards in the field of 3D modelling, such as CityGML or IFC, as they model the building features (e.g., walls, windows) instead of the indoor space itself. |
| T133 |
757-831 |
Sentence |
denotes |
They also do not consider the connectivity and semantics of indoor spaces. |
