The structure of the index tree decides the average index number to be visited, but even regarding the same index structure, the average visit time is different if the broadcast sequence is different.
索引树的结构决定了平均访问索引节点的数目，但是即使对于相同的索引结构，如果采用不同的广播序列，则平均访问时间也不尽相同。
This paper introduces a newly generalized and dynamic structure for the similarity retrieval of high dimensional feature vectors called the recursive clustering index tree.
文章提出了一种新的适用于高维特征矢量相似检索动态聚类索引树结构。
R-tree is a dynamic index tree of space search. Its structure use multi-dimensional region to express spatial data object. R-tree is a valid way to visit rectangle.
树是空间搜索的动态索引树，它的结构是利用多个维中的区间来表示空间数据对象，它是矩形访问的一种有效方法。
A computer model of category index for Chinese thesaurus is designed by using a tree structure in this paper.
本文运用树形结构原理，对汉语主题词范畴索引进行了计算机模型设计。
The system's flexibility and generalization is greatly improved by the development of a maintenance modular of index coding in tree structure.
开发树状结构方式的指标编码维护模块，可以极大地提高系统的通用性和灵活性；
This paper classify a series of methods on spatial database index, and introduce the QR-tree index structure with very large spatial database.
在综述现有空间数据库索引技术的基础上，提出了一种面向大型空间数据库的QR-树索引方法。
The R-tree is a commonly used index structure of spatial data.
树是常用的空间数据索引结构。
On the basis of this model , the author put forward a R-tree based Composite Spatiotemporal Index (CST-TREE) and described its structure and mechanism.
并在此模型上提出了一个基于R树的复合时空索引（CST-TREE）机制，定义了节点结构，并分析、描述了此索引的结构及原理。
According to the characteristics of spatial index of grids and R-tree, a hybrid structure of spatial multilevel index is presented based on grid and R-tree.
结合网格索引和R树索引的特点，提出了一种基于网格与R树的多级混合索引。
QR-tree, a spatial index structure based on R-tree and a kind of space partition method using Quad-tree, is proposed. Its data structure and algorithms are also stated.
提出了一种基于R-树与“四叉树”空间层次划分的空间索引结构QR-树，给出了其数据结构和算法描述。
QR-tree, a spatial index structure based on R-tree and a kind of space partition method using Quad-tree, is proposed. Its data structure and algorithms are also stated.
提出了一种基于R-树与“四叉树”空间层次划分的空间索引结构QR-树，给出了其数据结构和算法描述。
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