Fig. 2
The overall schema of the proposed repair operator for a small example with ten genes. The number of clusters is set to three. The initial set of selected genes is \({\varvec{G}} = \left\{ {{\varvec{G}}_{1} ,\user2{ G}_{3} ,\user2{ G}_{7} ,\user2{ G}_{10} \user2{ }} \right\}\) that all of them belong to cluster 1 and 2 and no gene has been selected from cluster 3. After performing the repair operator, a gene with the lowest Fisher score (G7) is removed from the initial set of selected genes, and a gene from cluster 3 with the highest Fisher score (G9) is added to the final set of selected genes