邻近次梯度法求解弱凸问题的收敛率分析

Journal of Mianyang Teachers' College(2018)

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Abstract
邻近次梯度算法是求解两个凸函数和的经典方法.本文对凸问题的目标函数做了适当的推广,在有限维欧几里得空间中,提出了利用邻近次梯度算法求解弱凸函数与凸函数和的优化问题,在目标函数具有尖性的假设下,证明了取Polyak步长时算法线性收敛.本文得到的结果,是对Cruz和Davis等人结果的推广.
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