An Approach for Integrating the Prioritization of Functional and Nonfunctional Requirements

Table 1

Steps of IPA for integrating the prioritization of FRs and NFRs.

Step number	Description
1	Determine candidate FRs and NFRs
2	Construct the decision matrix
3	Elicit the importance degree of each NFR with respect to each FR
4	Calculate NFRs final ranking with respect to all FRs using triangular fuzzy numbers and alpha cut approach
5	Compute FRs final ranking using weighted average decision matrix and weights determined in Step 4