  Often during the requirements engineering (RE) process, the value of a
requirement is assessed, e.g., in requirement prioritisation, release planning,
and trade-off analysis. In order to support these activities, this research
evaluates Goal Oriented Requirements Engineering (GORE) methods for the
description of a requirement's value. Specifically, we investigate the
goal-to-goal contribution relationship for its ability to demonstrate the value
of a requirement, and propose that it is enriched with concepts such as
correlation, confidence, and utility.
