OSSA: A modelling system for virtual realities based on conceptual graphs and production systems
The Ossa project is an attempt to develop an alternative conceptual modelling technique for virtual realities. This thesis identifies several problems with existing object-oriented modelling approaches used for virtual realities, and suggests some possible solutions. Ossa employs conceptual graphs and production system technology to create a modelling environment. The corresponding prototype of the Ossa system is discussed in detail and compared to the object-oriented approach.