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. 2021 Sep 29;211:106444. doi: 10.1016/j.cmpb.2021.106444

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Fig 3 — Specific steps of our proposed combined DES method for COVID-19 screening. k represents the number of clusters set for each time. k_max is the maximum number of clusters. B_i is the n samples randomly selected from the training set for the i-th time. L_i is the base classifier obtained by training with B_i, and m is the number of base classifiers.