%T A parallel semantic net engine and its application to data modeling
%A Y. N. Lee
%E Stephen J. Turner
%B OUG\-12: Tools and Techniques for Transputer Applications
%X Although the use of Fourth Generation Languages has greatly
increased the efficiency of the system development process,
the validation of system specifications is still considered
to be complicated and time\-consuming. A "Parallel
Semantic Net Engine (PSNE)" has been developed as
part of a research project carried out in the Department of
Computer Science at Exeter University to investigate into
this area. This project was initiated by a software house,
Softwright Systems Ltd., which has made extensive use of
Fourth Generation Languages.The purpose of this project was
to construct an engine which would be fast enough to
validate a system specification in realtime, giving
immediate feedback to the user when constraints are
violated. The areas of knowledge representation and parallel
processing were explored. A Parallel Semantic Net Engine was
proposed in order to take advantage of the richness of
semantic networks in representing complicated relationships
and the power of transputers in speeding up the processing.
Figure 1 shows the general model of the PSNE.The model is
distributed over of a host PC and a network of transputers.
On the PC side, there are the application generator,
generated applications and a standard relational database
which stores the application data. A front\-end would be
developed running on the PC to act as the gateway for data
passing between the PC and the transputers.
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