Somecreative theories and relevant algorithms will be put forward such as first layer gridauto-selection algorithm based on normal distribute, multi-layers rotate coding,single-layer grid files, in-out-block algorithm to improve the performance of query.
针对二者的优缺点,本文提出了的基于正态分布的第一层网格长、宽自动调配、多层螺旋式索引块编码、单层网格空间索引技术、利用内外块提高查询效率等有创造性的理论和相关算法。
参考来源 - 改进的层次网格空间索引技术研究与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
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