计算机应用与软件2015，Vol.32Issue(5)：228-230,245,4.DOI:10.3969/j.issn.1000-386x.2015.05.055
一种针对海洋数据的空间抽样方法
A SPATIAL SAMPLING APPROACH FOR MARITIME DATA
摘要
Abstract
Sampling method is an effective means in improving the efficiency of processing and operation of environmental investigation, data mining and visualisation display in regard to massive maritime data.However, the classical sampling methods ( such as simple, system-atic, stratified and clustering and so on) are set up targeted at the traditional industrial products, when directly applied in maritime data, there will be the problems such as low efficiency, redundant information and uneven spatial distribution, etc.To solve these problems, we propose a spatial sampling method suitable for the maritime data.In this method, we first stratify the studying regions using the correlation of maritime data;Then, based on the spatial variation of maritime data, we design the optimised systematic spatial sampling method.Experi-mental results show that the new spatial sampling method balances the decrease of sample information redundancy and the spatial distribution of sample points.The method can effectively obtain the information of uniformly distributed positions of sample points, and takes the variabili-ty between the sample points into account as well, it also well retains the characteristics change information in the region.关键词
海洋数据/分层抽样/空间系统抽样Key words
Maritime data/Stratified sampling/Spatial systematic sampling分类
信息技术与安全科学引用本文复制引用
王睿晗,黄冬梅,王振华,周雪楠..一种针对海洋数据的空间抽样方法[J].计算机应用与软件,2015,32(5):228-230,245,4.基金项目
国家自然科学基金项目( 61272098 ) （ 61272098 ）
上海高校优秀青年教师培养项目( B -5409-11-0012 ) （ B -5409-11-0012 ）
国家重点基础研究发展计划项目(2012CB316200) （2012CB316200）
海洋赤潮灾害立体监测技术与应用国家海洋局重点实验室开放研究基金课题(MATHAB201307). （MATHAB201307）
