Some mathematical models are given about crop growth and fertilization quantity, by using the methods of regression analysis, grey dependent degree and analytical hierarchy process.
利用回归分析、灰色关联度和层次分析方法建立了施肥量对农作物生长的数学模型。
These methods include the Principle component analysis, the Regression analysis, the Grey cognate analysis, the Delphi, the Ordering method, the Analytical Hierarchy Process, Fuzzy method.
目前学术界对土地等级评价所使用的主要方法有：主成分分析法、回归分析法、灰色关联度分析法、特尔斐法、排序法、层次分析法、模糊综合评价法。
A new synthetic assessment method based on the analytical hierarchy process (AHP) and grey correlation method was put forward to evaluate the stability of the underground mined-out areas.
为了对地下采空区稳定性进行评价，提出一种基于层次分析法和灰色关联法的综合评价方法。
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