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中文摘要：
针对许多共轭梯度算法的充分下降性都依赖于线搜索过程这一不足,给出了一个新的共轭梯度算法,并在步长搜索满足Zoutendijk条件下证明了算法的全局收敛性。
英文摘要：
The sufficient descent property is dependent on the line search in many conjugate gradient method. We thus proposed a new algorithm. The proposed algorithm can ensure that the sufficient descent property holds without any line searches. A global convergence result is proved when the Zoutendijk condition is met in the inexact line search.
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