Distributed Collaborative Geographic Modeling Task Decomposition Method Based on HTN Planning
Hui Jia Yang, LV Guo-Nian, Cheng Ye-Hua · Acta Geodaetica et Cartographica Sinica · 2013
In order to effectively realize the cooperative planning and resources sharing in distributed collaborative geographic modeling environment,several decomposition principles of geographic modeling tasks such as function structure,computational complexity,organization multiplicity,and spatiotemporal scales were proposed after analyzing the decomposable process of distributed collaborative geographic modeling tasks.And then a formalized expression based on hierarchical task network(HTN) planning was adopted for the geographic modeling tasks.A recursive decomposition algorithm of modeling tasks based on ordered task decomposition(OTD) was designed.Then,the modeling tasks were tessellated,decomposed and expanded into subtask network to reflect the thinking of cooperative task planning by experienced domain experts.With the adoption of SWAT model as an experimental case,HTN-based geographic modeling task planner is developed to provide a new thought for dynamic decomposition method of distributed collaborative geographic modeling tasks.