The affine arbitrage-free class of Nelson–Siegel term structure models
Nelson–Siegel 期限结构模型的仿射无套利类AI 解读 ↓
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Nelson–Siegel 期限结构模型的仿射无套利类AI 解读 ↓
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We derive the class of affine arbitrage-free dynamic term structure models that approximate the widely used Nelson-Siegel yield curve specification. These arbitrage-free Nelson-Siegel (AFNS) models can be expressed as slightly restricted versions of the canonical representation of the three-factor affine arbitrage-free model. Imposing the Nelson-Siegel structure on the canonical model greatly facilitates estimation and can improve predictive performance. In the future, AFNS models appear likely to be a useful workhorse representation for term structure research.
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