Author/Editor		Cestnik, Bojan; Sušnik, Janko; Bizjak, Breda
Title		Rule base analysis: a case study in occupational medicine
Type		članek
Source		In: Kononenko I, Urbančič T, editors. CADAM-97. Zbornik Računalniška analiza medicinskih podatkov; 1997 nov 12; Bled. Ljubljana: Inštitut Jožef Stefan,
Publication year		1997
Volume		str. 46-55
Language		eng
Abstract		In this paper we present an analysis of a rule base of an expert system for the evaluation of work ability. The system is used in Medical Health Center in Žalec. Its data structure consists of three parts: a set of worker's health characteristics, a set of workplace's characteristics and a set of incompatibility rules that relates the former two sets. The incompalibility rules are segmented according to the subsystems of worker's characteristics: relevant medical experts provided the rules for each subsystem. In total, there are around 2700 rules segmented into 13 subsystems. Due to relatively high number of the rules and, more imporlantly, since they originate from different sources (experts) there is a need to rank the rules according to their rigor. In such way, the roles can be compared with respect to their relative severity and cliecked if the rank concurs with the common medical knowledge. The implications are twofold. First, some minor difierences between the views of experts for different subsystems can be revised. Second, when the knowledge about argonomic measures advances, the impact to the corresponding rules is relatively easy to trace. Thus, the presented analysis can be viewed as a convenient tool for the rule base maintenance.
Descriptors		WORKPLACE DISABILITY EVALUATION OCCUPATIONAL EXPOSURE TASK PERFORMANCE AND ANALYSIS WORKLOAD EXPERT SYSTEMS