Measuring Internal Product Attributes ◾ 391
Many owgraph-based measures have been proposed as measures of
structural complexity. Many of these measures are hierarchical, so they
can be dened easily within our framework. By viewing each of them
in the context of the three necessary and sucient conditions, M
1
, M
2
,
and M
3
, we can see how such measures may be computed automatically.
Furthermore, we can see easily what level of subjectivity has crept into
the denition of the measure, and we can compare it with the notion
of complexity in the real, empirical world that the measure is trying to
capture.
In particular, we can isolate the three aspects of subjectivity in the mea-
sure’s denition, namely
1. What is the “complexity” of the di ...