Local scale models: state space alternative to integrated GARCH processes
State space alternative to autoregressive conditional heteroskedasticity models are proposed. The initial model, which is labelled the Gaussian local scale model, has a measurement density which is Gaussian, conditional on the unobservable precision. The precision is assumed to be a gamma variable w...
主要作者: | Shephard, N |
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格式: | Journal article |
語言: | English |
出版: |
Elsevier
1994
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主題: |
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