Towards a Theory of Requirements Elicitation: Acceptability Condition for the Relative Validity of Requirements

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Executive Summary

A requirements engineering artifact is valid relative to the stakeholders of the system-to-be if they agree on the content of that artifact. Checking relative validity involves a discussion between the stakeholders and the requirements engineer. This paper proposes a language for the representation of information exchanged in a discussion about the relative validity of an artifact; the acceptability condition, which, when it verifies in a discussion captured in the proposed language, signals that the relative validity holds for the discussed artifact and for the participants in the discussion; and reasoning procedures to automatically check the acceptability condition in a discussions captured by the proposed language.

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