Linked Data

Technical Report that documents the EXPRESS-to-OWL conversion routine that the BuildingSMART Linked Data Working Group (LDWG) proposes to the standardisation committee of BuildingSMART. PDF document icon 20151014_LDWG_EXPRESS-to-OWLrecommendation.pdf — PDF document, 620 kB (635815 bytes)

Express-to-OWL conversion

Previous ifcOWL versions

The following documents have been used throughout the first meetings of the group (starting from the kick-off meeting on 29 May 2015). The IFC4_ADD1.exp schema has been used as a reference schema in developing an appropriate conversion approach.

Singapore ifcOWL ontology proposal (25 Sep. 2015) IFC4_ADD1.owl - IFC4_ADD1.ttl (Singapore proposal) IFC4.owl - IFC4.ttl (Singapore proposal) IFC2X3_TC1.owl - IFC2X3_TC1.ttl (Singapore proposal) IFC2X3_Final.owl - IFC2X3_Final.ttl (Singapore proposal) Draft ifcOWL ontology files (17 Sep. 2015) IFC4_ADD1.owl - IFC4_ADD1.ttl (previous version) IFC4.owl - IFC4.ttl (previous version) IFC2X3_TC1.owl - IFC2X3_TC1.ttl (previous version) IFC2X3_Final.owl - IFC2X3_Final.ttl (previous version) Draft ifcOWL ontology files (22 May 2015) IFC4_ADD1.owl - IFC4_ADD1.ttl (previous version) IFC4.ttl (previous version) IFC2X3_TC1.ttl (previous version) IFC2X3_Final.ttl (previous version) In the above ifcOWL draft ontology files, a number of open issues (PDF) has been identified relating to the EXPRESS-to-OWL mapping. These open issues form a minimal set of issues that needed to be resolved in the first meetings of the Linked Data Working Group (March - October 2015).

LDWG Charter

The Charter that has been proposed on 15 October 2015 in the BuildingSMART Standards Summit (Singapore) for official initiation of the Working Group. PDF document icon 20151021_LDWG_charter.pdf — PDF document, 379 kB (388349 bytes)