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Δs for Dirichlet mixtures found by the DP-sampler. Using parameters β = 400 and γ = 100, the DP-sampler was run on SUCSC for 1000 iterations. After every 10th iteration, the MDL principle was applied to the components returned, to find a DM with optimal Δ. Black crosses indicate Δs that are greater than those for all previous iterations; red circles, others. For iteration 10, Δ = 1.0666 is off the scale. DP, Dirichlet process; DM, Dirichlet mixture; MDL, minimum description length.
