Showing papers on "Conceptual schema published in 1975"

The representation of concepts in OWL

Abstract: This paper discusses the theoretical basis of the formalist used as a foundation for OWL, a system for representing and processing conceptual knowledge. This foraallsa attempts to capture the expressive power of natural language by adopting the underlying representational conventions and "conceptual models" of English. The foraallsa Is built around specialization, which is perceived to be the key organizing principle of English at a deep conceptual level. The use of specialization In combination with another low-level structural device, reference, leads to a slaple but powerful structure, the concept, which is ideal both for the representation of a broad spectrum of conceptual knowledge and for computation on existing machines equipped with large, high-speed, random-access areas.

Features of a conceptual schema

Abstract: Data Base Management Systems (DBMS's) can be divided in three main categories according to the basic data organization offered to their users. The three approaches are: hierarchical, network and relational. In future DBMS's all views may have to be offered to please a diverse population of users. Acknowledging this requirement a common facility has often been proposed under the name of a conceptual schema. The conceptual schema comprises a common denominator for all three DBMS approaches.

A conceptual framework for criminal justice planning

Abstract: This paper outlines a conceptual scheme for systematic analysis of the criminal justice policy-planning process. The major assumptions required to apply the concept of policy-planning in the substantive area of criminal justice are examined. Specification of critical aspects of the criminal justice system/environment relationship and elaboration of the roles played by various classes of key actors in relation to the need for, demand for, production of, and utilization of policy-planning analyses are central features of the analytic scheme.