
102 Requirements Engineering for Software and Systems
In addition, various ratios can be formed using macro- and micro-level indi-
cators. No particular thresholds for the metrics are given (research is still being
conducted in this regard). However, at the end of this section, summary metrics for
56 NASA projects are given for comparison.
A description of the metrics and some excerpts from the ARM report for creat-
ing the Smart Home SRS document found in the appendix. e definitions are
derived from those reported by the tool and described by the authors of the tool in
a related report (Rosenberg et al.).
Table 5.2 Excerpt from NASA Procedural ...