spatial query造句
例句与造句
- 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 - Broadcast - based spatial queries
基于广播的空间数据查询 - Spatial query optimization
空间查询优化 - 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。 - 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。 - It's difficult to find spatial query in a sentence. 用spatial query造句挺难的
- 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。 - 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。 - 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。 - 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。 - 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。 - Because of its strong spatial query function and its support for various client platforms , we chose arcims as the webgis platform . the system uses the popular asp ( active server page ) method and the most - used webgis software - arcims to generate , release and transfer the disaster information
3 、对国外多个基于web的地图应用系统(国外有代表性的webgis网站)的浏览功能、使用方法、地图显示、功能、交互性、定制功能、特殊功能等几个方面做了比较。 - Based on lots of advanced results of computer graphics , modem mathematics , computer science and topography , etc . this thesis discussed the theory , techniques and arithmetic of three - dimensional terrain visualization in three - dimensional gis , such as terrain modeling techniques for digital elevation model , basic theory of three - dimensional terrain visualization , dynamical three - dimensional terrain display with simplified model , and spatial query methods within three - dimensional terrain maps . among these techniques , combined with concrete requirements for visualization in flood control decision - making system , this thesis emphasized on the following aspects : 1
本文在吸取了计算机图形学、现代数学、计算机科学、测绘学等众多领域大量先进理论成果的基础上，系统的论述了三维gis中地形三维可视化的理论、技术和算法，包括数字高程模型的地形表面建模技术、地形三维可视化的基本理论、基于模型简化的地形三维动态显示技术以及基于三维地形图的空间查询技术。 - While the application of the component gis technology in hydrogeology can build the hydrogeologic profile automatically and rapidly on the basic of special orderliness of hydrogeologic stratum . on the other hand , supported by gis , the system has superiority in spatial query , edition of profile and dynamic topological rebuilding
而组件式gis技术在水文地质中的应用，一方面可以利用组件式gis固有的特点，根据水文地质层的空间分布规律快速方便的自动构建水文地质剖面，另一方面，由于系统以gis技术为支撑，因此，它在空间查询，剖面编辑、动态拓扑重建方面具有独特的优势。 - The whole work in this paper is listed as followed : firstly , this paper set forth on management of spatial data and general mining process in spatial data mining ; secondly , the deficiency of gis spatial query on the database and the necessity of data ming are referred to and the source data is preprocessed ; thirdly , the single - dimension table is discussed including three parts : the theory of rough is talked about and is used to analyze the preprocessed data . also , the data is disposed by programming ; the disadvantages of the apriori algorithm are referred to . based on the original algorithm , advaced _ apriori algorithm is put forward to by perfecting the apriori algorithm
对rough集理论算法思想进行了论述，并编程实现了对gis属性数据的处理；讨论关联规则，指出了apriori算法的不足，在原算法的基础上改进了算法；与原算法对比， advanced _ apriori算法在算法复杂度(空间复杂度与时间复杂度)上具有很大的优越性；给出这三种方法( rough集理论、 apriori算法、 advanced _ apriori算法)在算法复杂度(时间复杂度和空间复杂度)的比较，并对优劣进行评定； 4 、多维表的处理：提出空间数据挖掘模型，采用sqlserver建立星形数据模式，以此建立空间数据立方体，采用dbminer进行数据挖掘； 5 、最后是本文的结论和展望；对前面各章的总结，得出几点结论，并指出需要进一步探讨的问题。 - Give the data structure of spatial data and categorical data , on which introduced object organizing and managing theory in oodb and template technology including data template and method template , mode oo data access model and spatial query and spatial analysis model
摘要给出了空间数据和属性数据的数据结构，在此基础上采用面向对象数据库( oodb )技术中的对象组织和管理思想，采用数据模板和方法模板技术建立面向对象的数据访问模型，并在此基础上建立了一种面向对象的空间查询和空间分析模型。
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