下降单纯形法(downhill simplex method)
http://blog.csdn.net/u013007900/article/details/46524381
https://wenku.baidu.com/view/b524035e650e52ea551898a0.html
http://blog.csdn.net/u013007900/article/details/46524381
https://wenku.baidu.com/view/b524035e650e52ea551898a0.html