Information is All You Need: Requirements Engineering Quality Reframed

Abstract

Why do low-quality requirements specifications sometimes produce functional software while some projects with high-quality specifications fail? A common answer to this anomaly is that it depends on the context, which is neither expressive nor actionable. To move beyond this vague appeal to context, this vision proposes a novel holistic theory of requirements engineering (RE) quality. This theory models how information particles, i.e., discrete pieces of domain knowledge, are transferred between roles and artifacts. Since the RE process is ultimately an information transfer, holistic RE quality depends on the properties of information flow, i.e., how effectively and efficiently information is transferred from sources (like stakeholders) to targets (like developers and testers), uniting both artifact- and process-based perspectives on RE quality. In an exemplary simulation of the theory we illustrate why a highquality specification gets bypassed in an agile context, thereby demonstrating that a simulation can provide actionable insights into calibrating the RE process to optimize the information flow. Beyond organizational applications, we envision that the theory can serve as a coherent theoretical framework for understanding the success or failure of RE processes and artifacts.