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- 2017
顾及手机基站分布的核密度估计城市人群时空停留分布
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Abstract:
为了减小人群在连续空间上停留分布的估计误差，结合手机基站的空间的分布特点，根据基站间的邻近性来计算带宽控制参数，使搜索带宽随着基站的分布而变化；利用最小二乘交叉验证和对数概率两种方法来评价其估计效果，结果表明变化带宽比固定带宽的核密度估计效果更优。以深圳市手机位置数据为例，利用改进方法估计了几个典型时段城市人群停留的时空分布差异，反映了城市人群对城市不同区域的使用情况及其随时间变化情况
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