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一个三项LS共轭梯度方法 被引量:2

A Three-Term LS Conjugate Gradient Method
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摘要 给出一个三项LS共轭梯度方法,并在适当条件下获得此方法对一般函数的全局收敛性.该方法能保证搜索方向在不需要任何线搜索下具有充分下降性,而且比通常的LS方法更具竞争性. A three-term LS conjugate gradient method is proposed,which can ensure that the search direction possesses the sufficient descent property without any line search.Under suitable conditions,the global convergence of the general function will be established.Moreover,numerical results show that the new method is more competitive to the usual method.
作者 李向荣
出处 《广西科学》 CAS 2013年第4期348-351,共4页 Guangxi Sciences
基金 国家自然科学基金项目(编号:11261006) 广西大学科研基金项目(编号:XJZ110632) 广西高等学校特色专业及课程一体化建设项目(管理科学专业) 广西自然科学基金项目(编号:2012GXNSFAA053002)资助
关键词 三项共轭梯度 充分下降 全局收敛性 three-term conjugate gradient sufficient descent global convergence
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