Line Search For Generalized Alternating Projections

Understand

This paper is about line search for the generalized alternating projections (GAP) method.

• This method is a generalization of the von Neumann alternating projections method, where instead of performing alternating projections, relaxed projections are alternated.
• The method can be interpreted as an averaged iteration of a nonexpansive mapping.
• Therefore, a recently proposed line search method for such algorithms is applicable to GAP.