In November 2021, we organized a roundtable regarding the application of expert judgment and overrides in behavioral modeling of prepayments and savings, including interest rates, COVID-19, and elasticity of savings.

We have identified six key questions for decision-making with respect to using datasets from external providers. The approach focuses on six key questions regarding definition of default, granularity, scope of application, data sample, number of defaults in the dataset and the availability and quality of the explanatory variables.