Indicating that CBMC does not satisfy the monotonic property in terms of th
e number of interactions, Xu and Zhou proposed an augmented definition of C
BMC by adopting cut set instead of glue methods. The augmented CBMC clearly
satisfies the monotonic property. However, CBMC is designed to overcome th
e problem with respect to the number of interactions and, therefore, focuse
s, on the interaction pattern, especially, member connectivity. Consequentl
y it does not make sense to mention the monotonic property of CBMC with res
pect to interaction number. Moreover, the notion of glue methods allows sev
eral interpretations on the design quality of a class. However, that meanin
gful interpretation is not possible for the augmented definition due to the
removal of the notion of glue methods. Copyright (C) 2001 John Wiley & Son
s, Ltd.