Function or value | Description |
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Nelson-Siegel is a curve fitting model that is frequently applied in finance to fit smoothed yield curves. xData: The periods of available yield rates (time). yData: The observed yields.
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Nelson-Siegel-Svensson is a curve fitting model that is frequently applied in finance to fit smoothed yield curves and extends the Nelson Siegel model by a term introducing a second hump. xData: The periods of available yield rates (time). yData: The observed yields.
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