建立了基于层次一主成分分析法的高等级公路安全综合评价模型，并给出评价案例。
The comprehensive evaluation model based on AHP and primary component analysis has been set up to evaluate the traffic safety and a relevant appraisal example is given in the paper.
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。
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.
评价指标体系建立以后，在确定评价指标权重的方法上，作者选用了层次分析法和主成分分析法相结合的方法。
After establishing evaluation index system, I select the method which combines the analytic hierarchy process with principal component regression in determining evaluation index weight method.
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