A novel potential outlier recognition approach considering local heterogeneity enhancement to improve the quality of soil datasets
文献类型：期刊论文
| 作者 | Wang, Yongji5; Yang, Mingjun5; Wang, Meizi4; Lv, Jiayang5; Yuan, Shuhao5; Li, Shaoqi5; Wang, Zihan5; Zhang, Jipeng5; Qi, Qingwen2,3; Ye, Yanjun1 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 454页码:117200 |
| 关键词 | Digital soil mapping (DSM) Quality of soil datasets Soil samples Soil map product Outlier recognition Local heterogeneity enhancement |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2025.117200 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Soil datasets, including soil sample data and soil map products, often contain outliers that can lead to inaccurate modeling and analysis of various soil-related issues. Existing methods for identifying potential outliers in soil datasets rely on simple statistical approaches and tend to overlook the geographical characteristics of the soil. Local indicators of spatial association (LISA) can address this limitation by examining the local spatial structures inherent in soil data. However, distinguishing some outliers remains challenging because of the varying levels of heterogeneity across different soil regions. In this paper, we present a novel method for recognizing potential outliers through local heterogeneity enhancement, which is aimed at improving the quality of soil datasets. In this method, stratified soil variations are first balanced to mitigate the effects of spatial discrepancies in different soil regions. Second, local heterogeneity enhancement is conducted to modify the outlier scores associated with abnormal soils exhibiting low heterogeneity. Third, a frequency histogram of outlier scores is applied to determine a suitable threshold at which to recognize potential abnormal values in soil datasets. To validate the proposed method, it was compared with the LISA and box-plot methods. Simulation data and soil data were adopted in the experiment, incorporating two types of irregular points and spatially continuous surfaces. The comparative experiments demonstrated that the proposed method more effectively identifies potential outliers by analyzing and balancing the local spatial structure of the soil than traditional methods do. It can be concluded that local heterogeneity enhancement is beneficial for recognizing potential outliers in soil datasets. |
| URL标识 | 查看原文 |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001422449800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/212343]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Wang, Meizi |
| 作者单位 | 1.Hebei Univ Engn, Sch Earth Sci & Engn, Handan 056038, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China; 4.Henan Agr Univ, Coll Plant Protect, Zhengzhou 450002, Peoples R China; 5.Zhengzhou Univ, Sch Geosci & Technol, Zhengzhou 450001, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Yongji,Yang, Mingjun,Wang, Meizi,et al. A novel potential outlier recognition approach considering local heterogeneity enhancement to improve the quality of soil datasets[J]. GEODERMA,2025,454:117200. |
| APA | Wang, Yongji.,Yang, Mingjun.,Wang, Meizi.,Lv, Jiayang.,Yuan, Shuhao.,...&Ye, Yanjun.(2025).A novel potential outlier recognition approach considering local heterogeneity enhancement to improve the quality of soil datasets.GEODERMA,454,117200. |
| MLA | Wang, Yongji,et al."A novel potential outlier recognition approach considering local heterogeneity enhancement to improve the quality of soil datasets".GEODERMA 454(2025):117200. |
入库方式： OAI收割
来源：地理科学与资源研究所
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