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The expected performances of six methods under the evaluation model 1 on the simulated data with unequal variances, where σ1 = 0.5, σ2 = 1. The expected Precision Rates and Recall Rates of six methods as well as their error limits on the simulated data with unequal variances (σ1 = 0.5, σ2 = 1) in the evaluation model 1, where the numbers of samples of class C1 and class C2 are fixed at 60, respectively.
