The comparison is made among forward selection method in the stepwise regression and PLS as well as ORS methods through the example of QSAR (quantitative structure activity relationship).
用该法处理构效关系问题，并与逐步回归正向选择法及PLS回归法进行了比较，得到满意的结果。
Through the comparison of the content selection and ways to develop ability, this paper makes a contrast of the realization methods of knowledge and ability goals.
文章通过对知识内容的选择及能力培养的途径的对比，比较两版教科书对知识与能力目标的实现方式；
Conclusion: the forecasting system of limit test is quick and simple to handle, and favours the methods comparison and selection.
结论：检测限预测系统操作快速、简便，有利于方法的比较与选择。
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