Human influences During the requirements elicitation phase which is heavily

Human influences during the requirements elicitation

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Human influences During the requirements elicitation phase, which is heavily influenced by the stakeholders, good communication is essential. In order to assure high-quality communication between the requirements engineer and stakeholders, it is important to determine the type of requirement, the desired level of detail, and the experience of the requirements engineer and the interviewees with different elicitation techniques. Social, group-dynamic, and cognitive capabilities of the stakeholders also influence the choice of suitable elicitation techniques significantly.
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3.3 Elicitation Techniques 25 Another influence factor is whether the elicited knowledge is explicit (consciously known) by each individual stakeholder or if it is implicit or unconscious (i.e., covert). Organizational influences Organizational risk factors the project faces need to be investigated as well. Among other things, this comprises the distinction between fixed price contracts and service contracts, whether the system to be built is a new development or an extension of a legacy system, and spatial and tem- poral availability of the stakeholders. Operational influences of the content In addition, it is necessary to consider the operational content of the requirements. If the system is very complex, it is advisable to employ a structuring approach during elicitation in order to deconstruct the opera- tional contents into understandable parts. Combine techniques with regard to your particular situation to lower risks. Another influencing factor on the choice of elicitation techniques is the desired level of detail of the requirements. Abstract requirements can be elicited rather well using creativity techniques. With the stakeholders, a vision of the system or its important properties can be created or collected. Inquisitive (survey) techniques or observational techniques can aid in elic- iting requirements of a medium level of detail [Robertson 2002] . Finely detailed requirements can be elicited well by making use of document- centric techniques, i.e., techniques that use existing documents because information up to an arbitrary level of detail can be extracted from these. It is advisable to combine different techniques because this minimizes many of the risks inherent to the project. Weaknesses and pitfalls of a par- ticular technique can be balanced out through the use of another tech- nique whose strong points lie where the first technique may have deficits. 3.3.2 Survey Techniques Eliciting explicit knowledge Survey techniques aim at eliciting as precise and unbiased statements as possible from stakeholders regarding their requirements. All survey tech- niques assume that the respondent is capable of explicitly expressing his or her knowledge and that he or she is committed to investing time and effort for the elicitation. Survey techniques are usually driven by the require- ments engineer because she asks the questions. This, however, might result in the fact that stakeholder concerns are forgotten, superseded, or disre- garded.
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