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arXiv 1609.02609math.OC
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非凸二次约束二次规划的一种迭代法

An Iterative Method for Nonconvex Quadratically Constrained Quadratic Programs

Chuangchuang Sun, Ran Dai

摘要:

研究了非凸二次约束二次规划(QCQP)问题的迭代法.现有的求解非凸QCQP问题的方法之一是将对未知矩阵的秩1约束松弛为半定约束,从而得到最优值的上界,但没有找到精确解。通过重新考虑秩一矩阵,提出了一种逐步逼近秩一约束的迭代秩最小化方法。每一次迭代都被表示为一个带半定约束的凸问题。为了提高算法的可扩展性和计算效率,提出了一种增广拉格朗日方法--扩展Uzawa算法。仿真实例使用所提出的方法和比较结果从其他方法提供和讨论。

英文摘要:

This paper examines the nonconvex quadratically constrained quadratic programming (QCQP) problems using an iterative method. One of the existing approaches for solving nonconvex QCQP problems relaxes the rank one constraint on the unknown matrix into semidefinite constraint to obtain the bound on the optimal value without finding the exact solution. By reconsidering the rank one matrix, an iterative rank minimization (IRM) method is proposed to gradually approach the rank one constraint. Each iteration of IRM is formulated as a convex problem with semidefinite constraints. An augmented Lagrangian method, named extended Uzawa algorithm, is developed to solve the subproblem at each iteration of IRM for improved scalability and computational efficiency. Simulation examples are presented using the proposed method and comparative results obtained from the other methods are provided and discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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