Semantic Networks for VLSI Design

This old IBM paper from 1989 was used during our discussions of how a semantic network database could be used for real-world applications.

The Abstract:

Tool developers for Computer Aided Design and Manufacturing (CAD/CAM) applications arc experimenting with some new techniques that could he useful to other kinds of applications. Hierarchical-design techniques and semantic-network databases appear to he a synergistic pair. Each helps the other to provide systems which have less complexity, more flexibility, and which avoid problem size limitations due to main memory size. In this paper, definitions are constructed for organizing the semantic network, and are used to express a general purpose hierarchical database schema complete with rules. That schema is also the basis for the inheritance of both rules and common facts. The rules may include application algorithms as well as data management functions. The tracing of a wire-net through a hierarchical design is Screenshot 2013-12-19 10.08.06demonstrated, focusing on the character of interface port instances and definitions. The semantic network is also used to track and identify versions of designs in the hierarchy. Then the synergism of versioncd hierarchical dnta manngement and a single data-model implementation of semantic networks is described. A list of aggravations which impede acceptance of hierarchical design also suggests resolutions to these problems.

Here is a link to the full report done by Robert Griffith at IBM.


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