Positive forward rates in the maximum smoothness framework

Details Positive forward rates in the maximum smoothness framework Positive forward rates in the maximum smoothness framework

2003-05-21

arxiv.org/abs/math/0305307v2

Mathematics

Optimization and Control

Typos corrected, two main figures changed

Scientific paper

In this article we present a non-linear dynamic programming algorithm for the computation of forward rates within the maximum smoothness framework. The algorithm implements the forward rate positivity constraint for a one-parametric family of smoothness measures and it handles price spreads in the constraining dataset. We investigate the outcome of the algorithm using the Swedish Bond market showing examples where the absence of the positive constraint leads to negative interest rates. Furthermore we investigate the predictive accuracy of the algorithm as we move along the family of smoothness measures. Among other things we observe that the inclusion of spreads not only improves the smoothness of forward curves but also significantly reduces the predictive error.

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