计算机应用与软件2015，Vol.32Issue(5)：42-45,4.DOI:10.3969/j.issn.1000-386x.2015.05.010
异构环境下的 GML 空间数据高效集成研究
RESEARCH ON EFFICIENT INTEGRATION OF GML BASED SPATIAL DATA IN HETEROGENEOUS ENVIRONMENT
摘要
Abstract
GML ( Geography Markup Language) has become a de facto standard for geospatial data encoding, exchanging and integration in heterogeneous environment.GML documents are bulky, because they contain a great deal of redundant information and the GML-based spatial data have the property of mass, which affects the integration performance of the system.In this paper, we propose a compression tech-nology-based efficient integration method.It separates the structure and data in GML documents, for structural data in documents it uses phrase-based dictionary compression method to compress, and for coordinate data the delta encoding method for precision removal is used to compress.Experimental results show that the method defeats conventional methods in compression performance and can obviously improve the integration performance of GML-based spatial data.关键词
异构环境/GML空间数据/压缩/增量编码/集成Key words
Heterogeneous environment/GML-based spatial/data Compression/Delta encoding/Integration分类
信息技术与安全科学引用本文复制引用
李文全,戴经国,段琢华,李丹..异构环境下的 GML 空间数据高效集成研究[J].计算机应用与软件,2015,32(5):42-45,4.基金项目
国家自然科学基金项目( 61101134 ) （ 61101134 ）
广东省青年创新人才类项目(2014KQNCX209)广东高校优秀青年创新人才培养计划项目(LYM11116) . （2014KQNCX209）
