Mixed image cells decomposition algorithm based on principle component analysis is a widely used algorithm, but the large computation amount and less flexibility are its main drawbacks.
基于主分量分析的混合像元分解算法是一种较为成熟的算法，但它存在着计算量大，适应性差等缺点。
2
The simulative experiment demonstrates that this new kind of mixed optimal algorithm is simple in computation, rapid in convergent speed and good in robustness of initial value.
仿真实验研究表明：这种新型混合优化算法，计算简单，收敛速度快，初值鲁棒性好。
3
The multiple-points method was used for computation of mixed-mode stress intensity factor.