A robust approach to the decision rules of NPV and IRR for simple projects

We propose a robust approach to the decision rules of Net Present Value (NPV) and Internal Rate of Return (IRR) by building an analogy between robust optimization approach proposed in the literature and decision rules of NPV and IRR by considering uncertainty in cash flows. As proposed in the literature, we assume that the parameters, cash inflows and cash outflows in our case, belong to a symmetric and bounded interval set, and define a series of decision rules of NPV and IRR by considering robustness.