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An Externalization of technical know-how and dicision-making processes in a geoscientific investigation; An Example of an estimation of uplift rate

Niizato, Tadafumi  ; Yasue, Kenichi; Doke, Ryosuke*; Nakayasu, Akio*

An expert obtain, handle, and analyze the multi-disciplinary and huge amount of geoscientific data by applying of the technical knowledge obtained through the long experience in the field of a geoscientific investigation, but technical know-how and decision-making processes in the work processes are almost implicit (tacit knowledge). To promote the sharing and inheriting of the knowledge down to the generations, the knowledge has to be externalized in a useful form. In this study, decision processes and technical know-how on an estimation of uplift rate by using a marine terrace have been clarified by the application of a knowledge engineering approach. Investigations and analyses for the estimation of uplift rate are classified into 8 units of task. A sequence of the task from extraction of pre-existing information to calculation of uplift rate has been illustrated as a task flow. The decision processes in each task have been illustrated as a flow diagram of decision-making process. The diagram shows input for a decision-making, decision point conducted the decision-making, and task and output resulting from the decision-making. This externalized tacit knowledge will be integrated into the IT-based expert system through the construction of an IF-THEN rule-base.

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