A multi-threshold, internal rule representation form used to support user modifiable knowledge-based systems

A flat file (i.e., tabular) internal rule representation suitable for storing expert system rules that can make use of a spread-sheet-like user interface is presented. The representation handles individual rule thresholds, different knowledge evidence procedures, and rule structures which can be represented as network graphs. Such representations: (a) help a system's rule structure to be made relatively accessible for those without significant artificial intelligence training, (b) allow for clear understanding of the extent and nature of a rule, and (c) provide opportunities for consistency checking.