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地理学报  2007 

基于案例推理的元胞自动机及大区域城市演变模拟

DOI: 10.11821/xb200710009, PP. 1097-1109

Keywords: 元胞自动机,案例推理,k,近邻算法,动态转换规则

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Abstract:

元胞自动机(CA)被越来越多地用于复杂系统的模拟中。许多地理现象的演变与其影响要素之间存在着复杂的关系,并往往具有时空动态性。在研究区域较大和模拟时间较长时,定义具体的规则来反映这种复杂关系有较大的困难。为了解决CA转换规则获取的瓶颈问题,提出了基于案例推理(CBR)的CA模型,并对CBR的k近邻算法进行了改进,使其能反映转换规则的时空动态性。将该模型应用于大区域的珠江三角洲城市演变中。实验结果显示,其模拟的空间格局与实际情况吻合较好。与常规的基于Logistic的CA模型进行了对比,所获得的模拟结果有更高的精度和更接近实际的空间格局,特别在模拟较为复杂的区域时有更好的模拟效果。

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