The PEER PBEE framework enabled probabilistic seismic hazard, risk and recovery evaluation of individual elements (buildings, bridges) of the built environment. In research, we tackle regional hazard, risk and recovery problems using an extension of this framework. In practice, seismic hazard models are widely accepted (and are continually refined). Regional risk models are also used, but to a lesser extent. Regional recovery models are knocking at the door, driven by simulation environments like the SimCenter tools pipeline or the IN-CORE integrated app.

Acceptance of resilience models in practice is stalled at the validation gate. We need to do this, but how? The scope is large: technical, social, economic, environmental… The time scale is long, on par with those of the built inventory evolution and the technological revolutions. Assessing the predictive ability of regional resilience models is key.

To move forward, we must define the validation process and acceptance criteria for regional disaster resilience models. Professor Stojadinovic propose using concepts of integral and separate effects testing from the technical side, internal and cross-model tests from the economic side and data reproducibility from the social side, Professor Stojadinovic advocate rational and feasible acceptance criteria, and will look forward to a productive discussion.