结合实地调查数据与最大似然分类算法进行对比实验，表明该模型比最大似然总体分类精度高16%。
In comparison with the maximum likelihood classification by field survey data, the classification precision of this model heightens 16%.
论文利用河北和河南两省的实地调查数据，分析了中国北方地区地下水市场特征的地区差异，及其与当地水资源禀赋的关系。
The overall goal of this paper is to have better understanding of the characteristics of groundwater markets and its relationship with water endowments in northern China.
通过实地调查，收集数据，并进行加工整理，得到服务系统运行的参数和最佳指标，并对服务系统进行改进和优化。
Through field surveys, data collection, processing and finishing, access to services system operation parameters and the best indicators, and services to improve and optimize the system.
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