Boţ Radu Ioan, Grad Sorin-Mihai
Faculty of Mathematics, University of Vienna, Vienna, Austria.
Faculty of Mathematics and Computer Science, Babeş-Bolyai University, Cluj-Napoca, Romania.
Optimization. 2018 Feb 20;67(7):959-974. doi: 10.1080/02331934.2018.1440553. eCollection 2018.
We propose two forward-backward proximal point type algorithms with inertial/memory effects for determining weakly efficient solutions to a vector optimization problem consisting in vector-minimizing with respect to a given closed convex pointed cone the sum of a proper cone-convex vector function with a cone-convex differentiable one, both mapping from a Hilbert space to a Banach one. Inexact versions of the algorithms, more suitable for implementation, are provided as well, while as a byproduct one can also derive a forward-backward method for solving the mentioned problem. Numerical experiments with the proposed methods are carried out in the context of solving a portfolio optimization problem.
我们提出了两种具有惯性/记忆效应的前向后向近端点型算法,用于确定向量优化问题的弱有效解,该向量优化问题是在给定的闭凸尖锥下,对一个真锥凸向量函数与一个锥凸可微函数之和进行向量最小化,这两个函数均从希尔伯特空间映射到巴拿赫空间。还给出了算法的不精确版本,更适合于实现,同时作为副产品,还可以推导出一种用于解决上述问题的前向后向方法。在所提出的方法的背景下,针对一个投资组合优化问题进行了数值实验。