HICAP: An Interactive Case-Based Planning Architecture and its Application to Noncombatant Evacuation Operations

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This paper describes HICAP , a general purpose planning architecture that we have developed and applied to assist military commanders and their staff with planning NEOs (Noncombatant Evacuation Operations). HICAP integrates a hierarchical task editor, HTE, with a conversational case-based planner, NaCoDAE/HTN. In this application, HTE maintains an agenda of tactical planning tasks that, according to military doctrine, must be addressed in a NEO. Military planning personnel select a task to decompose from HTE and then use NaCoDAE/HTN to interactively refine it into an operational plan by selecting and applying cases, which represent task decompositions from previous NEO operations. Thus, HICAP helps commanders by using previous experience to formulate operational plans that are in accordance with NEO doctrine.