Examples of two-mode and one-mode networks. The example two-mode network on the left side has links only between cancers and genes. On the right side, one-mode networks of genes (upper) or cancers (lower) are derived from the two-mode network. The number on each link corresponds to the number of shared cancers between the genes in the upper network and the number of shared genes between the cancers in the lower. The number within each node is the maximal value for the links connected to the node.