由于实际问题的精确极小点一般是不知道的, 因此初始点的选取给算法的实
际操作带来了很大的困难. 为了克服这一困难, 可引入线搜索技术以得到大范围
收敛的算法, 即所谓的阻尼牛顿法(Since the exact minimum points of the actual problem are generally unknown, the selection of the initial points is given to the algorithm
In order to overcome this difficulty, line search technique can be used to obtain large range
The convergence of the algorithm, called the damped Newton method, is presented)