Unrolled algorithms for group synchronization. (arXiv:2207.09418v1 [eess.SP])

The group synchronization problem involves estimating a collection of group
elements from noisy measurements of their pairwise ratios. This task is a key
component in many computational problems, including the molecular
reconstruction problem in single-particle cryo-electron microscopy (cryo-EM).
The standard methods to estimate the group elements are based on iteratively
applying linear and non-linear operators. Motivated by the structural
similarity to deep neural networks, we adopt the concept of algorithm
unrolling, where training data is used to optimize the algorithm. …

algorithms arxiv synchronization