The main goal of the paper is to present and advocate for the representation of the activity-centred graphs (ACGs, derived in our research from the classical conceptual graphs) as linguistic, structured and logically consistent semantIc network. We use these graphs within a project on developing a multidatabase CASE environment. Some general benefits for the ACG representation, are underlined: 1) to transcend from pure (complex) object representation to general concepts, meaning not only objects but also properties, events, states, points in time, expressions, structures, abstract knowledge, etc. 2) to unify the data, and the functional and control perspectives in information system modelling and processing 3) to supervise the concept and process interoperability 4) to increase the code and repository reusability. These benefits are mainly due to the ACG ability of representing both the role-like and operator-like dependencies among concepts and of extrapolating such software engineering principles as: abstraction, structuring, modularity, connectivity and encapsulation. The logical consistency and correctness of the ACG representation derives from its natural mapping to predicate calculus and from the natural implementation of the λ-abstraction mechanism.
Conceptual Modelling, Conceptual Graphs, Semantic Networks with Node and Link Specialization, Operator-like and Role-like Relationships among Concepts, Knowledge Structuing, Modularization, Connection, Encapsulation.
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