arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.00242math.OCmath.PR
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具有线性不等式的线性半定问题的随机投影

Random projection of Linear and Semidefinite problem with linear inequalities

Pierre-Louis Poirion, Bruno F. Lourenço, Akiko Takeda

摘要:

约翰逊-林登施特劳斯引理指出,存在线性映射,将向量空间的一组点投影到一个低得多的维度的空间中,使得这些点之间的欧几里得距离近似保持。这个引理以前已经被用来证明,我们可以随机聚合,使用一个随机矩阵,其条目是从零均值亚高斯分布,线性规划(LP)的等式约束,同时保持近似的问题的值。在本文中,我们将这些结果的不等式的情况下,通过引入一个随机矩阵的非负条目,允许随机聚合的LP的不等式约束,同时保持约值的问题。通过对偶性,我们提出的方法允许减少约束的数量和问题的维数,同时获得最优值的一些理论保证。我们还将展示我们的结果扩展到某些半定规划实例。

英文摘要:

The Johnson-Lindenstrauss Lemma states that there exist linear maps that project a set of points of a vector space into a space of much lower dimension such that the Euclidean distance between these points is approximately preserved. This lemma has been previously used to prove that we can randomly aggregate, using a random matrix whose entries are drawn from a zero-mean sub-Gaussian distribution, the equality constraints of an Linear Program (LP) while preserving approximately the value of the problem. In this paper we extend these results to the inequality case by introducing a random matrix with non-negative entries that allows to randomly aggregate inequality constraints of an LP while preserving approximately the value of the problem. By duality, the approach we propose allows to reduce both the number of constraints and the dimension of the problem while obtaining some theoretical guarantees on the optimal value. We will also show an extension of our results to certain semidefinite programming instances.

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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