Nelson siegel model estimed by Kalman Filter

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Alberto
Alberto 2012-9-6
回答： asma noor 2019-7-3
Hi, I'm having some trouble in estimating the Nelson Siegel model with the Kalman Filter according to the metodology presented in the paper "The macroeconomy and the yield curve: a dynamic latent factor approach". Can I share some ideas with someone who is familiar with this approach.

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Horace
Horace 2013-12-1
Hi, I hope you're well.I'm working with the Nelson Siegel model as well.I'm wondering whether you have solved it and how you solved it.Thank you!
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Alberto
Alberto 2014-7-15
I was able to get convergence only with the exclusion of macroeconomic variables from the state equation. So in order to asses the link between state variable and macro I needed to estimante another model.

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Jonas Striaukas
Jonas Striaukas 2014-7-15
I have a code, but for me it does not converge when I have Q_t (3x3 measurement error matrix) positive definite and it does if I have diagonal matrix. Maybe someone had the same issue? i think is to do with initializing Kalman filter but not sure..
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Alberto
Alberto 2014-7-15
my personal experience is that starting values are a very tricky issue with the kalman filter. If you are trying to replicate a paper you may use the final estimed parameters of the paper as starting values for your problem.

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asma noor
asma noor 2019-7-3
i am also working with nelson siegle model estimated by kalman filter but its complex one anyone there who help me out how i can estimate that command.

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