Based on the implication matrix it is in principle possible to draw a map which shows all the cognitive categories which resulted from the coding process,and in which two cognitive categories are linked whenever the corresponding cell in
the implication matrix has a non-zero entry.In practice,this is seldom possible
or desirable,because of the large number of non-zero entries in the typical
implication matrix (often several hundreds).
In practice,one tries to find a hierarchical value map that includes the ‘most important’ links.This is achieved by specifying a cutoff level