Figure 10

Bicluster building. This figure shows how three simple biclusters (B₁, B₂, B₃) are represented. Observe that g₁ is in the three biclusters, and that c₁ and g₄ are in two of them. a) The method generates an internal edge structure by building complete graphs for each subset of nodes corresponding to a bicluster. This structure places close nodes in the same biclusters when the force layout is applied, moving g₁ to the center of the three biclusters, since it is shared by all of them. A similar behavior occurs with c₁ and g₄, shared each one by two different biclusters. b) When displayed, edges are omitted and instead hulls with limits defined by splines surrounding the outermost nodes of each bicluster are drawn. Hulls are transparent, so their overlap forms solider colors, highlighting g₁ more than c₁ and g₄, and these ones more than the rest.