Minimum distance to the complement of a convex set: duality result
Journal of Optimization Theory and Applications
Convex sets as prototypes for classifying patterns
Engineering Applications of Artificial Intelligence
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We show that the minimum distance projection in the L1- norm from an interior point onto the boundary of a convex set is achieved by a single, unidimensional projection. Application of this characterization when the convex set is a polyhedron leads to either an elementary minmax problem or a set of easily solved linear programs, depending upon whether the polyhedron is given as the intersection of a set of half spaces or as the convex hull of a set of extreme points. The outcome is an easier and more straightforward derivation of the special case results given in a recent paper by Briec (Ref. 1).