KNOWLEDGE ELICITATION METHODS Knowledge Elicitation involves extracting expert knowledge from the domain expert about the problem at hand. Many Knowledge Elicitation (KE) methods have been used to obtain the information required to solve problems. These methods can be classified in many ways. One common way is by how directly they obtain information from the domain expert. Direct methods involve directly questioning a domain expert on how they do their job. In order for these methods to be successful, the domain expert has to be reasonably articulate and willing to share information. The information has to be easily expressed by the expert, which is often difficult when tasks frequently performed often become 'automatic.' Indirect methods are used in order to obtain information that can not be easily expressed directly. One other way of classifying methods are by how they interact with the domain expert. Other factors that influence the choice of KE method are the amount of domain knowledge required by the knowledge engineer and the effort required to analyze the data. KE Methods by Interaction Type Interviewing (Direct) Interviewing consists of asking the domain expert questions about the domain of interest and how they perform their tasks. The success of an interview session is dependent on the questions asked (it is difficult to know which questions should be asked, particularly if the interviewer is not familiar with the domain) and the ability of the expert to articulate their knowledge. The expert may not remember exactly how they perform a task, especially if it is one that they perform automatically". Some interview methods are used to build a particular type of model of the task. The model is built by the knowledge engineer based on information obtained during the interview and then reviewed with the domain expert. In some cases, the models can be built interactively with the expert, especially if there are software tools available for model creation. Case

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