Representing Dynamic Skill Knowledge.

摘要

Intelligent computer Aided Instruction (ICAI) requires machine understanding of student knowledge and skills. Methods for representing knowledge about a coherent set of tasks, dynamic skill tasks, are presented. A formal system appropriate to the representation of temporality, events, and actions is adopted. A semantic composition method naturally promotes a 'degrees of specificity' approach to the representation of knowledge. Some, presumably widely held, elements of dynamic skill knowledge are domain-independent. Others are specific to particular task domains. Many task-specific representations can be seen as instantiations of more generic representations. Student explanations of a variety of dynamic skill tasks are analyzed in this framework. An experimental computer-based dynamic skill task is used to permit detailed observation of student performances that are analyzed in terms of the proposed representation format.