Abstract
We establish a region of convergence for the proto-typical non-convex Douglas–Rachford iteration which finds a point on the intersection of a line and a circle. Previous work on the non-convex iteration Borwein and Sims (Fixed-point algorithms for inverse problems in science and engineering, pp. 93–109, 2011) was only able to establish local convergence, and was ineffective in that no explicit region of convergence could be given.
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Bauschke H.H, Combettes P.L, Luke D.R: Phase retrieval, error reduction algorithm, and Fienup variants: a view from convex optimization. J. Opt. Soc. Am. A 19(7), 1334–1345 (2002)
Borwein, J.M., Sims, B.: The Douglas–Rachford Algorithm in the Absence of Convexity. In: Fixed-Point Algorithms for Inverse Problems in Science and Engineering, Springer Optimization and its Applications 49, pp. 93–109 (2011)
Borwein J.M, Zhu Q.J: Techniques of Variational Analysis. Springer, New York (2005)
Elser V., Rankenburg I., Thibault P.: Searching with iterated maps. Proc. Natl. Acad. Sci. 104, 418–423 (2007)
Goebel K., Kirk W.A: Topics in Metric Fixed Point Theory. Cambridge University Press, Cambridge (1990)
Gravel S., Elser V.: Divide and concur: a general approach constraint satisfaction. Phys. Rev. E 78(036706), 1–5 (2008)
Lions P.L, Mercier B.: Splitting algorithms for the sum of two nonlinear operators. SIAM J. Numer. Anal. 16(6), 964–979 (1979)
Opial Z.: Weak convergence of the sequence of successive approximations for nonexpansive mappings. Bull. Am. Math. Soc. 73, 591–597 (1967)
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Aragón Artacho, F.J., Borwein, J.M. Global convergence of a non-convex Douglas–Rachford iteration. J Glob Optim 57, 753–769 (2013). https://doi.org/10.1007/s10898-012-9958-4
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DOI: https://doi.org/10.1007/s10898-012-9958-4