Figure 7
From: BicSPAM: flexible biclustering using sequential patterns
Strategies to deal with varying noise relaxations. Three strategies are illustrated. First, a relaxation is achieved by reducing the number of items of the alphabet from 4 to 3 items. Second, a lower support (sup=2) is combined with closing options to compose the final biclusters. In this example, this lower support leads to ({x1,x2,x3},{y1,y2}) and ({x2,x3},{y1,y2,y3}) biclusters, which can be extended or merge as a single larger bicluster ({x1,x2,x3},{y1,y2,y3}). Third, multiple items can be assigned per element using the distance between its value and the centroid of items. Illustrating, let a1,1=0.5, the centroid of items 0 and 1 be respectively 0.2 and 1.1, and the distance threshold be 0.7, then a1,1 is assigned to both 0 and 1 items (1.1 -0.7<a1,1<0.2+0.7).