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v2007.11.26 - Convex Optimization

v2007.11.26 - Convex Optimization

v2007.11.26 - Convex Optimization

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E.9. PROJECTION ON CONVEX SET 631∂H −C(a)P C xH −H +κaP ∂H− xx(b)Figure 125: Dual interpretation of projection of point x on convex set Cin R 2 . (a) κ = (a T a) −1( a T x − σ C (a) ) (b) Minimum distance from x toC is found by maximizing distance to all hyperplanes supporting C andseparating it from x . A convex problem for any convex set, distance ofmaximization is unique.

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