When Doesn't Cokriging Outperform Kriging?
When Doesn't Cokriging Outperform Kriging?
复制标题
协同克里金法何时不优于克里金法？
DOI：
10.1214/15-sts518
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Wenxiang Cai
中科院分区：
文献类型：
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作者：
Hao Zhang;Wenxiang Cai
虽然理论上的共克里格法应该产生比克里格法更小或相等的预测方差，但在实践中有时很难看到这种优异的表现。这将激发对克里格金的理论研究。总的来说，关于共克里金的理论结果是缺乏的。在这项工作中，我们通过研究一些显式模型和具体的抽样方案，提供了一些理论结果来比较克里格金和克里格金。(arXiv: 1507.08017)
Although cokriging in theory should yield smaller or equal prediction variance than kriging, this outperformance sometimes is hard to see in practice. This should motivate theoretical studies on cokriging. In general, there is a lack of theoretical results for cokriging. In this work, we provide some theoretical results to compare cokriging with kriging by examining some explicit models and specific sampling schemes. [arXiv:1507.08017]