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cs.IT2022
The sample complexity of sparse multi-reference alignment and single-particle cryo-electron microscopy
Tamir Bendory, Dan Edidin
Multi-reference alignment (MRA) is the problem of recovering a signal from its multiple noisy copies, each acted upon by a random group element. MRA is mainly motivated by single-p…
cs.IT2022
On the Role of Channel Capacity in Learning Gaussian Mixture Models
Elad Romanov, Tamir Bendory, Or Ordentlich
This paper studies the sample complexity of learning the unknown centers of a balanced Gaussian mixture model (GMM) in with spherical covariance matrix $σ^2\math…