TL;DR本文研究含二次方程的稀疏解的凸优化计算方法,证明了对于下限为 O (log n (m)^(1/2)) 的朴素凸松弛方法是准确的。
Abstract
In this paper we consider a system of quadratic equations ||^2 = b_j,
j = 1, ..., m, where x in R^n is unknown while normal random vectors z_j in R_n
and quadratic measurements b_j in R are known. The system is assumed to be
underdetermined, i.e., m < n. We prove that if there