Verification of uncertain knowledge-based systems: an empirical verification approach

Article Abstract:

An approach is developed for verifying the existence of anomalies in knowledge-based systems that use MYCIN uncertainty factors or weights. A case study is presented to demonstrate the use of the tests and approaches formulated for this purpose. A comparison is made between the distribution of weights in the MYCIN-like systems and in other systems. The weights are also examined in terms of the individual meanings to find out if any one of them possesses uncommon characteristics. Weight symmetries from rule pairs are likewise investigated to identify potential anomalies. The results of the analysis indicate that MYCIN-like systems are suboptimal and that Bayes' nets and other alternative formal probability approaches can better describe the probabilistic nature of knowledge.

Analysis, Knowledge-based systems, Uncertainty (Information theory), Rule-based systems, Rule based systems

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Planning information technology - knowledge worker systems

Article Abstract:

Companies planning information technology system purchases should consider the needs of the employees who are expected to use the equipment to improve their output. The time lag for training skilled employees to use the new systems and the preferences of those employees should be considered.

United States, Planning, Purchasing, Equipment and supplies, Information technology, Information systems, Knowledge workers

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