Sensitivity Analysis in Portfolio Interval Decision Analysis

Techniques enabling decision makers to identify a set of non-mutually exclusive projects (or alternatives) constituting a portfolio, while allowing for imprecise information with respect to projects’ benefits, costs, and overall resource constraints, have emerged as an area of great applicability. To reach applicability, reasonable and computationally meaningful decision evaluation methods are needed. In this paper, we propose an embedded form of sensitivity analysis for portfolio interval decision analysis building upon the concept of interval contraction. Both a priori sensitivity analysis and a posteriori sensitivity analysis for portfolio interval decision analysis are supported by the approach.