【摘要】 本文主要探讨了基于字典的矢量地图压缩中字典的设计问题,提出了一种新颖的基于聚类方式的字典设计方法,它可以使字典更好的近似于某种特定的数据集。实验证明只要字典结构适合,这种基于聚类方式的字典数据压缩技术可获得更好的压缩效果。更多还原

【Abstract】 This paper explores the problem of dictionary design for dictionary based vector map compression. We propose a novel clustering- based dictionary design which adapts the dictionary to a given dataset, yielding better approximation. Experimental evalua- tion shows that when the dictionary size is fixed, the proposed clustering- based technique achieves lower error compared with con- ventional dictionary compression approaches.更多还原