Algorithm equivalence table

A table comparing the algorithm details of commonly named algorithms.

Common Name	Batch size	Search direction	Step method	Objective	Other
ePIE	1
Difference Map
LSQ-ML	any	steepest descent	least squares	maximum likelihood
cgrad	full	conjugate gradients	line search	maximum likelihood

Notes

LSQ-ML

Phase retrieval and object/probe sub-problems are solved separately in an alternating fashion.