RISK-BASED CAPITAL (Final Rule, amended 2/13/2003), also, check out the amendments at OFHEO's Regulations and notices page.
FHA's Reading Room with tons of useful docs, particularly Actuarial Review for fiscal year 2007. Default and prepayment models are described in the Appendix A.
This is Argyn's blog. I comment on topics of my interests such as software, math, finance, and music. Also, I write about local events in Northern Virginia, USA and all things related to Kazakhstan