We show how the most likely deformation can be assigned to a yield curve, consistent with subjetive views on a handful of key rates. We provide an inutive explanation for the solution, which is perhaps not what one might at first blush have expected. We draw analogies from physics that...

We present an essentially affine model with pricipal components as state variables. We show that, once no-arbitrage is imposed, this choice of state variables imposes some unexpected constraints on the reversionspeed matrix, whose N2 elements can be uniquely specified by its N eigenvalues. The...

We present an affine multifactor Gaussian term structure model, where we let factors be principal components of yields. Taking forward the affine-yield idea presented in Duffie and Kan (1996) we derive general expressions for the coefficients of a multidimensional affine Gaussian stochastic...