Reference & User Manual
|Release Level||7.0||Release Date||2016 12||Revision Level||beta|
|Last modified on: Monday, 15-Aug-16 16:42 CEST|
Descriptors: object attributes
The facts (data, variables) of expert systems XPS and RTXPS are stored in DESCRIPTORs.
A value is assigned to a DESCRIPTOR either by direct editing or by starting the rule-based inference, that will recursively compile information from the data base including asking the user where necessary, to assign a value to the target (Descriptor) of the inference.
The system then uses a set of alternative methods enumerated in the DESCRIPTOR definition to obtain or update the DESCRIPTOR value in the current context. The inference engine compiles all necessary information for the appropriate Backward Chaining Rules' input conditions recursively, evaluates the Backward Chaining Rules, and eventually updates the target DESCRIPTOR.
Descriptor syntax and descriptions
Descriptors are defined in terms of:
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