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ontologies for knowledge modeling in construction planning • vito getuli
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3.4 Research tasks in the ontology development
ontology being built? What type of information should be involved in the ontology? In order to give a clearly visible structure of the objectives, a graphical representation is proposed for each sub-ontology. 3. Definition of the overall framework of the ontology. In this step a list of the main selected concepts (classes) and their formal explanation are presented. 4. Definition of the topological relations and integration with other domain. The core of the ontologies is here presented. Classes and class hierarchies are defined in detail, relationships between classes are established and properties and attributes are identified according to the objectives. 5. Ontology specifications and computation in the ontology editing environment. The presented ontologies have been modelled by using Protégé (Horridge, 2011). In order to design a correct and not redundant ontology, the consistency of the ontology has been checked using an automated tool. 3.2 Modelling domains When building an ontology for knowledge mapping of a particular domain of interest, it is important to reflect on the different variable the domain depends on. In the presented case, the problem of modelling the construction process for construction workspaces planning and construction activities scheduling is the result of a complex process involving many decision variables, defined as modelling domains5. As a first step for developing 5 (Heijst et al., 1997) distinguish different types of ontologies, e.g. domain ontologies, which express conceptualizations for particular domains; and generic ontologies, whose concepts are considered to be common to many domains.
