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一种采用Hilbert曲线网格划分聚类算法
Grid-partition Clustering Algorithm Based on Hilbert Curve
【摘要】 Hilbert曲线能够线性填充数据空间,将数据空间分割成大小相等的网格,从而将位于网格中的点映射到线性空间中.本文利用Hilbert曲线的数据聚类性质,提出一种基于Hilbert曲线网格划分聚类算法,详细叙述算法的执行过程,并给出每一步的理论依据.算法首先以网格为单位合并出面积较小的聚集,然后将小聚集经过若干次合并形成较大聚集,最终使得聚集最优.实验结果表明该算法的执行时间少于经典聚类算法k-m eans和基于网格聚类算法CLIQUE.
【Abstract】 Hilbert curve can fill the data space linearly,divide it into equal-size grids and map points lying in grids into the linear space.Using the quality of the clustering of Hilbert curve,the paper presents a grid-partition clustering algorithm based on Hilbert curve.First,the algorithm merges numerous small clusters based on the grids.Then it merges the clusters again and again.Finally,it gets large clusters.According to the test,the algorithm is better than the clustering algorithm k-means and CLIQUE.
【Key words】 Hilbert curve; grid partition; reduction of dimensionality; clustering algorithm;
- 【文献出处】 小型微型计算机系统 ,Journal of Chinese Computer Systems , 编辑部邮箱 ,2010年10期
- 【分类号】TP311.13
- 【被引频次】6
- 【下载频次】300