%0 Journal Article
%T A DIRECT ALGORITHM WITH n-STEP QUADRATIC CONVERGENCE<br>一个具有 n 步二次收敛性的直接法算法
%A XU YI-FAN
%A <br>徐以汎
%J 系统科学与数学
%D 1991
%I 
%X A modifiel PY method is proposed.Its main character is that the rotation transformationand Gram-Schmidt orthogonalizing process are used to rectify the set of search directions.Hence,the algorithm remains not only the quadratic termination,but also the n-step quardra-tic convergence for the objective function which is uniform convex.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=0CD45CC5E994895A7F41A783D4235EC2&aid=377F1327E2B83883CE7C03DE32982736&yid=116CB34717B0B183&vid=708DD6B15D2464E8&iid=38B194292C032A66&sid=FD7C952458BFB5D8&eid=5B5B75F4854B8331&journal_id=1000-0577&journal_name=系统科学与数学&referenced_num=0&reference_num=0