An information-fusion method to identify pattern of spatial heterogeneity for improving the accuracy of estimation
文献类型：EI期刊论文
| 作者 | Li Lianfa; Zhong Ershun |
| 发表日期 | 2008 |
| 关键词 | Decision making Decision support systems Decision theory Decision trees Estimation Fusion reactions Information management Nuclear physics Search engines Set theory Surveys Trees (mathematics) |
| 英文摘要 | While spatial autocorrelation is used in spatial sampling survey to improve the precision of the feature's estimate of a certain population at area units, spatial heterogeneity as the stratification frame in survey also often have a considerable effect upon the precision. Under the context of increasingly enriched spatiotemporal data, this paper suggests an information-fusion method to identify pattern of spatial heterogeneity, which can be used as an informative stratification for improving the estimation accuracy. Data mining is major analysis components in our method: multivariate statistics, association analysis, decision tree and rough set are used in data filter, identification of contributing factors, and examination of relationship; classification and clustering are used to identify pattern of spatial heterogeneity using the auxiliary variables relevant to the goal and thus to stratify the samples. These methods are illustrated and examined in the case study of the cultivable land survey in Shandong Province in China. Different from many stratification schemes which just uses the goal variable to stratify which is too simplified, information from multiple sources can be fused to identify pattern of spatial heterogeneity, thus stratifying samples at geographical units as an informative polygon map, and thereby to increase the precision of estimates in sampling survey, as demonstrated in our case research. © Springer-Verlag 2007. |
| 出处 | Stochastic Environmental Research and Risk Assessment
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| 卷 | 22期:6页:689-704 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/24819]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Li Lianfa,Zhong Ershun. An information-fusion method to identify pattern of spatial heterogeneity for improving the accuracy of estimation. 2008. |
入库方式： OAI收割
来源：地理科学与资源研究所
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