A Graph-Based Method for IFC Data Merging

Table 3

Entity statistics for scenarios e and f.

	Revit				ArchiCAD
	e	f	e-f	e-f GUID	e	f	e-f	e-f GUID
File size (kb)	30	153	161	169	72	302	353	370
IfcProject	1	1	1	1	1	1	1	1
IfcSite	1	1	1	2	1	1	1	2
IfcBuilding	1	1	1	2	1	1	1	2
IfcBuildingStorey	1	1	1	2	1	1	1	2
IfcWall; IfcWallStandardCase	6	9	9	15	6	9	9	15
IfcSlab	1	0	1	1	1	0	1	1
IfcWindow	0	6	6	6	0	6	6	6
IfcDoor	0	4	4	4	0	4	4	4
IfcColumn	15	0	15	15	15	0	15	15
IfcTypeObject	2	6	8	8	3	6	9	9
IfcRelationship	45	75	97	120	112	104	187	216
IfcPropertySetDefinition	24	28	44	52	91	58	135	149
IfcRepresentationItem	155	2605	2627	2667	343	5958	6094	6186

IfcTypeObject represents the total of type entities of components. IfcRelationship represents the sum of all relational entities in an IFC file. IfcPropertyDefinition denotes the aggregation of attribute set entities in an IFC file. IfcRepresentationItem represents the sum of geometric representation entities in IFC files.