On Recovery Guarantees for Angular Synchronization
On Recovery Guarantees for Angular Synchronization
复制标题
论角度同步的恢复保证
DOI:
10.1007/s00041-021-09834-1
复制
发表时间:
2020
影响因子:
1.2
通讯作者:
O. Melnyk
中科院分区:
文献类型:
--
作者:
F. Filbir;F. Krahmer;O. Melnyk
The angular synchronization problem of estimating a set of unknown angles from their known noisy pairwise differences arises in various applications. It can be reformulated as an optimization problem on graphs involving the graph Laplacian matrix. We consider a general, weighted version of this problem, where the impact of the noise differs between different pairs of entries and some of the differences are erased completely; this version arises for example in ptychography. We study two common approaches for solving this problem, namely eigenvector relaxation and semidefinite convex relaxation. Although some recovery guarantees are available for both methods, their performance is either unsatisfying or restricted to the unweighted graphs. We close this gap, deriving recovery guarantees for the weighted problem that are completely analogous to the unweighted version.
DOI:
10.1137/17m1122025
发表时间:
2017-03
期刊:
SIAM J. Optim.
影响因子:
--
作者:
Yiqiao Zhong;Nicolas Boumal
通讯作者:
Yiqiao Zhong;Nicolas Boumal
影响因子:
2.5
作者:
Singer, A.
通讯作者:
Singer, A.
影响因子:
3
作者:
Lerman, Gilad;Shi, Yunpeng
通讯作者:
Shi, Yunpeng