arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2102.13608math.OCcs.NAmath.NA
收藏

内点方法的稀疏逼近

Sparse Approximations with Interior Point Methods

Valentina De Simone, Daniela di Serafino, Jacek Gondzio, Spyridon Pougkakiotis, Marco Viola

摘要:

寻求稀疏解的大规模最优化问题已经变得无处不在。它们通常用各种专门的一阶方法来解决。虽然这些方法通常很快,但它们通常难以处理条件不那么良态的问题。在本文中,专门的变种的内点-邻近方法的乘数提出和分析这一类的问题。计算经验的各种问题,即,多周期的投资组合优化,分类的数据来自功能磁共振成像,恢复图像破坏的泊松噪声,并通过正则化逻辑斯谛回归分类,提供了大量的证据表明,内点方法,配备了适当的线性代数,可以提供一个显着的优势,一阶的方法。

英文摘要:

Large-scale optimization problems that seek sparse solutions have become ubiquitous. They are routinely solved with various specialized first-order methods. Although such methods are often fast, they usually struggle with not-so-well conditioned problems. In this paper, specialized variants of an interior point-proximal method of multipliers are proposed and analyzed for problems of this class. Computational experience on a variety of problems, namely, multi-period portfolio optimization, classification of data coming from functional Magnetic Resonance Imaging, restoration of images corrupted by Poisson noise, and classification via regularized logistic regression, provides substantial evidence that interior point methods, equipped with suitable linear algebra, can offer a noticeable advantage over first-order approaches.

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。

↑