A rigorous definition of robustness analysis

Robustness Analysis (RA) is a problem structuring method for flexible planning. This paper presents a revised definition of RA which is based on earlier presentations of RA as well as new results derived from empirical research. This paper first identifies the basic concepts that are necessary for a rigorous definition of RA and relationships between these concepts. On this foundation, this paper constructs new definitions of robustness score and discusses their uses.