An example that compares the features of combo1 and combo2 score functions. (a) An intermediate layout of CCB-grid layout algorithm. In this layout, all six nodes have the same attribute. (b) The next candidate layout that is generated from (a) by moving node vf below node vd. Combo scores of (a) and (b) are the same with combo1 score function. Instead, the combo score of (b) will be better than (a) with combo2 score function.
Kojima et al. BMC Bioinformatics 2007 8:76 doi:10.1186/1471-2105-8-76