Figure 2

Bias, variance, and RMS for several CoD estimators versus number of bins (b = 4, 8, 12 , and 16) under a Zipf model with , for actual CoD = 0.6 and varying sample size. Plot key: resubstitution (red), leave-one-out (blue), 0.632 bootstrap (green), 10-repeated 2-fold cross-validation (black). The curves for resubstitution and leave-one-out are exact; the curves for the other CoD estimators are approximations based on Monte Carlo sampling.