An Approach for Requirements Elicitation using Goal, Question, and Answer

Requirements elicitation is the first step in software development, methods such as data collection, questionnaire, interview, field observation are used in requirements elicitation, either way, the requirements from customer need to be properly extracted. For the interview, the accuracy of requirements elicitation depends on the dialog ability of software engineer (extractor) and customer (respondent). Among software engineers, there is a difference in the ability of requirements elicitation. Besides, it is difficult for experienced software engineers to extract customer requirements without fail. In this paper, in order to extract requirements without omission, the scope of the requirements is determined in advance, and a tree-like requirements decomposition structure is proposed for constructing the requirement questions. At last, a comparative experiment was carried out, and the effectiveness of the approach was positively supported by the experiment result.