n
nicefa.
Advanced Proof

Correlated Defaults: Quantifying Portfolio Credit Risk and Joint Survival

Students often conflate the correlation of latent variables ρ \rho with the correlation of default events. These are distinct; ρ \rho governs the joint distribution of latent thresholds, but the resulting binary default correlations are non-linear transformations that depend heavily on the time horizon t t .
Institutional Reference: Advanced Stochastic Processes
View Full Proof →