Spatial Data

Absrtact: February 14, 2014, the 2013-year survey and mapping Geographic Information Blue Book Conference was held in Beijing by the National Surveying and Mapping Geographic Information Bureau Surveying and Mapping Development Research Center. Experts introduced the wisdom of the Earth, wisdom of China, the wisdom of the city's connotation and development of the status quo, analyzed February 14, 2014, by the National Surveying and Mapping Geographic Information Bureau of Surveying and Mapping development of the "2013 Map of Geographical Information Blue Book Conference" held in Beijing. Experts introduced the wisdom of the Earth, wisdom of China, the wisdom of the city's connotation and development of the status quo, analysis of mapping geo-information in the wisdom of China ...

1, cloud computing Technology Ideas Cloud computing (Cloud Computing) is the 2006 by Google CEO Schmidt in the search engine conference first proposed the concept, it originated from Google senior engineer Christophe Bisciglia's "Google101" project, which is the 80 's mainframe computer to the client-server (client-server) ...

Spatial analysis in the age of large data Zhangxiaoxiang in recent years, large data are increasingly used to describe the coming era of information explosion, but also caused a high degree of attention by government departments. Firstly, the characteristics and latest development of large data and large space data are reviewed. Secondly, the core issues of three geo-information science, such as spatial analysis, spatial modeling and spatial optimization, are reviewed and reviewed from the perspective of GIS basic theory. On this basis, it extends the space philosophy and space thinking behind the space theory method. Finally, it points out the opportunity and challenge of the development of geo-information science in large data age. &nbs ...

Design of parallel algorithm for spatial sensitivity analysis based on MapReduce Li Fan He Honglin Jinghinli Zhang Lu Ying in the recent years, with the remote sensing spatial data widely used in the ecosystem, the development of the regional scale ecological Remote sensing parameter model has been promoted. Sensitivity analysis plays an important role in identifying key parameters of model, reducing model uncertainty and perfecting model. In the sensitivity analysis of the model parameters, the stand-alone environment can not meet the requirement of fast analysis because of the complex operation of spatial data. In order to improve the ecological remote sensing parameter model space ...

Query processing of large-scale vector spatial data selection based on Mapredue Tao Daiju Zheng Zezhong Liu Shuai for the efficient processing of large-scale vector space data, based on Hadoop parallel computing Framework mapredue, a distributed vector spatial data selection query processing method is realized. First of all, This paper analyzes the Key/value data model of OGC simple factor Standard and Hadoop, designs the vector file format which can be stored in Hadoop HDFs, secondly, according to the two-stage filtering-refining strategy, the map input data fragment, choose to search ...

Research on KNN algorithm based on MapReduce in spatial database Dalian Maritime University Liu Biao The first attempt is to design an inverted grid index in cloud environment and a spatial KNN query based on MapReduce on the basis of this index. The main work of this paper is as follows: (1) aiming at data points in two-dimensional space, this paper designs a distributed inverted grid indexing method, which conforms to the standard of spatial data index. Because the inverted grid index has a loose coupling and no shared special structure, the ...

The construction of Semantic spatial resource index and its query optimization algorithm based on object-oriented network Ma Wu Bin Liumingshing Dengsu Huanghongbin face the massive space resources in the Internet of things, introduce the method of semantic classification in the construction of Spatial resource Index, make the traditional IR tree have semantic feature, support the user's semantic query to the resource, A top-k semantic query optimization algorithm is proposed, and the validity of index structure and the correctness of query result are obtained through the use of actual data and experimental analysis, and the performance of the algorithm is evaluated from 3 indexes, such as index construction time, query time and query accuracy rate. Object-oriented Internet language ...

The Lyapunov stability analysis of multi-body adaptation in the ternary spatial domain of IoT Li Eliza is based on the environment of "Human (H)-Machine (M)-Object (T)" of the three types of main body corresponding to the {User requirements domain, three-dimensional architecture of information space domain, physical space domain}, and {control flow, data flow, perceptual flow In this paper, a multi-subject adaptive control algorithm for the ternary spatial domain of IoT is proposed by means of functional analysis and Lyapunov stability analysis, which is based on the dynamic system of the three-dimensional subject.

Abstract: In the domestic, most grassroots webmaster, the current main source of income, still rely on the advertising alliance, which in particular to Google AdSense for the most, only a small number of owners to put Taobao customers such as CPS, or such as major webmaster nets have fixed advertising revenue. At home, most grassroots webmaster, the current main source of income, still rely on the advertising alliance, which especially to Google AdSense for the most, only a small number of owners to put Taobao customers such as CPS, or such as the major webmaster nets have fixed advertising revenue. No matter what the profit model ...

This news (reporter Shing Philippine correspondent Shanhai) yesterday is the 19th National Survey Law propaganda Day, focusing on the propaganda theme of "Monitoring geographical conditions and serving scientific development" this year, the urban Planning and Land Commission convened a working conference on surveying and mapping the city with the theme of "deepening the digital Shenzhen construction and strengthening the geographical Tianshui monitoring". Strengthen in environmental protection, population management, intelligent public transport, electronic logistics and other fields of application City planning Land Committee Guo Renzhong deputy director, Shenzhen in the "Eleven-Five" period, surveying and mapping management system to further strengthen the construction of modern surveying and mapping system further improve ...