Evaluating the Validity of a Knowledge-Based System for Proactive Knowledge Transfer for Caregiving Relatives.

: The evaluation of the validity of a knowledge-based system is of great importance during its development. It determines whether the system represents the experts' knowledge correctly. This is highly important, but also particularly difficult, if the expert knowledge is not explicit, but only implicit and tacit. In the following the validity's evaluation of a system for education of caregiving relatives is presented. To evaluate the system's knowledge delivery strategy against the experts' opinion, several fictious characters were created. The evaluation revealed inconsistencies in the knowledge base. After resolving these, the experts' opinion is represented to a large extent by the system. Nevertheless, the used evaluation approach is not capable of detecting all inconsistencies. Therefore, a strong need of a system's learning capacity to integrate feedback from a larger group of real caregiving relatives exists. In addition, a rule-based component, representing disease specific knowledge, should be implemented.