How to use ACRE

A reader wishing to use ACRE should:
1) Determine acquisition needs: use all facets to determine the needs for
each acquisition session. The facets provide a useful checklist for
planning sessions: what is the purpose (bespoke, package selection,
procurement, or a combination); what knowledge can be acquired from
stakeholders and observed in the domain; what types of knowledge can
be observed; what types of knowledge can be provided by stakeholders
and what problems are likely when attempting to acquire this knowledge;
which stakeholders to observe or communicate with; what are the
practical constraints on each session (time, manpower etc.).
2) Choose acquisition method(s): an effective acquisition programme
must be defined, however this, in turn, depends on the methods chosen.
Again, more specific guidelines are needed: i) impose constraints
defined by the acquisition context to determine the possible range, scope
and number of acquisition sessions; ii) prioritise acquisition sessions
according to: (a) the importance of knowledge and requirements to be
acquired and: (b) problems might arise during acquisition; iii) choose
methods for planned sessions which acquire the most critical
requirements and knowledge. Use the look-up tables in this paper to
select methods with the best-fit. It is unlikely that one best fit method will
emerge, so compromises and payoffs are inevitable; iv) choose methods
for other sessions; v) check the acquisition programme against
constraints imposed by method interdependencies, and revise where

Reference: Reference: Neil Maiden (2011) Requirements Engineering Lecture Notes

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