A popular class of yield curve models is based on the Nelson and Siegel approach of 'fitting' yield curve data with simple functions of maturity. However, such models cannot be consistent across time. This article addresses that deficiency by deriving an intertemporally consistent and...

This paper presents a new approach to interest rate dynamics. We consider the general family of arbitrage-free positive interest rate models, valid on all time horizons, in the case of a discount bond system driven by a Brownian motion of one or more dimensions. We show that the space of such...

This paper considers the dynamics for interest rate processes within the Heath, Jarrow and Morton (1992) specification. It is well known that one of the difficulties in using this specification for estimation is the non-Markovian nature of the dynamics. The paper focuses on a fairly broad family...