| 1. | Integrated processing strategies for spatial query and path search 空间查询和路径搜索的集成处理策略 |
| 2. | Broadcast - based spatial queries 基于广播的空间数据查询 |
| 3. | Spatial query optimization 空间查询优化 |
| 4. | Spatial index is a indispensable part of spatial database , and can dramatically improve efficiency when doing a spatial query 空间索引作为空间数据库中的重要组成部分,可以加快对空间对象的检索。 |
| 5. | In this paper , the broadcast - based spatial query processing methods are presented for the location - based services 在这种无线计算环境下,数据广播方式是发布空间数据对象支持空间查询处理的有效方法。 |
| 6. | In this paper , we focus on the structure of r - tree and bucketfile , and the algorithm of three kinds of spatial queries 本文重点讨论了r树、 bucketfile两种空间索引的基本结构及三类空间查询在其上的算法实现。 |
| 7. | We summarize that spatial index system should provides three kinds of spatial query , they are , spatial range query , nearest neighbor query , spatial join query 本文总结出空间索引系统应提供的三类空间查询:空间范围查询、最近邻居查询、空间连接查询。 |
| 8. | This dissertation addresses the geo - spatial data service integration and distributed spatial query issues under web environment from the points of spatial database and information retrieval 论文从空间数据库和信息检索的角度研究了web环境下地理空间数据服务集成和分布式查询问题。 |
| 9. | 17 theodoridis y , stefanakis e , sellis t k . efficient cost models for spatial queries using r - trees . tkde , 2000 , 12 : 19 - 32 . 18 brinkhoff t . a framework for generating network - based moving objects 第二,基于这个预测模型,我们提出了一个新的存取方法anr树adaptive network r - tree ,它可以支持高效的预测查询,并且适应频繁的更新。 |
| 10. | The first international conference on mobile and ubiquitous systems : networking and services , boston , massachusetts , 2004 , pp . 22 - 26 . 9 zheng b , lee w c , lee d l . spatial queries in wireless broadcast systems . wireless networks , 2004 , 10 : 723 - 736 在该机制中,服务器广播的空间数据对象信息包括数据对象的标识以及其位置坐标,在组织广播数据时,数据对象按照其坐标位置进行排序,因此广播数据序列中的数据对象是依据其坐标有序的。 |