The analysis of variance (ANOVA) showed that the contribution of quadraticmodel was significant for the responses.
通过方差分析显示，二次模型对反应的贡献率具有统计学意义。
2
A quadraticmodel of predicting helical milling force was researched. The effects of spindle speed, feed per tooth, and axial and radial depth of cut were analyzed.
Since the homogeneous model can approximate the objective function better than the quadraticmodel, the new algorithm is superior to the classical trust region algorithm.