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The semi-algebraic geometry of saturated optimal designs for the Bradley-Terry model (1901.02375v3)
Published 8 Jan 2019 in math.ST, math.OC, and stat.TH
Abstract: Optimal design theory for nonlinear regression studies local optimality on a given design space. We identify designs for the Bradley--Terry paired comparison model with small undirected graphs and prove that every saturated D-optimal design is represented by a path. We discuss the case of four alternatives in detail and derive explicit polynomial inequality descriptions for optimality regions in parameter space. Using these regions, for each point in parameter space we can prescribe a D-optimal design.
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