Many problems require the ability to find least squares projections onto convex regions. Here it is shown that if the constraint region can be expressed as a finite intersection of simpler convex regions, then one can obtain the projection onto the intersection by performing a series of projections only onto the simpler regions. This may facilitate finding least squares projections in more complicated spaces since the approach is valid for a general Hilbert space rather than just Rn.
CITATION STYLE
Boyle, J. P., & Dykstra, R. L. (1986). A Method for Finding Projections onto the Intersection of Convex Sets in Hilbert Spaces (pp. 28–47). https://doi.org/10.1007/978-1-4613-9940-7_3
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