Check the spelling of the keywords related to "B" concern (and its sub-concerns), as well as those related to the software requirements; Check the possibility of adding new keywords to the "B" concern (or its sub-concerns); or.
The type of relationship addressed by the concept "Composition" describes the idea of decomposition of a concern into sub-concerns.
Justification: the fact that "A" depends on "B" means that for that "A" exists, "B" (or any of its sub-concerns) must exist too.
Justification: the fact that "A" contributes positively to "B" provides evidences that if "B" was identified, "A" (or any of its sub-concerns) should also be.
The suggestions of the remaining heuristics may be found in [24]: Check the spelling of the keywords related to "B" concern (and its sub-concerns), as well as those related to the software requirements; Check the possibility of adding new keywords to the "B" concern (or its sub-concerns); or Check the possibility of rewriting the description of some software requirements.
Heuristic 4 Description: if a non-functional concern "A" was found in the software requirements, then "A" (or any of its sub-concerns) is related to one or more functional requirements.
Heuristic 2 Description: if there is a "positive contribution" relationship "rel" that binds the concerns "A" (source) and "B" (target) and "B" was found in the software requirements, then "A" or any of its sub-concerns was identified too.
Heuristic 3 Description: if there is a "dependency" relationship "rel" that binds the concerns "A" (source) and "B" (target) and "A" was found in the software requirements, then "B" or any of its sub-concerns was identified too.
There may be the "Authorization" sub-concern in a specific software but not the "Encryption" sub-concern.
Added to this is the complexity of so called "sub threshold" concerns where a candidate may cause some concern on a number of assessments but none, on its own, is sufficient to trigger action [ 3].
Last, the third sub dimension concerns the collective monitoring and, in particular, the exchange of feedback on performance in practice.
