Asymptotically Optimal Smoothing with ARCH Models
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Suppose an observed time series is generated by a stochastic volatility model-i.e., there is an unobservable state variable controlling the volatility of the innovations in the series. As shown by Nelson (1992), and Nelson and Foster (1994), a misspecified ARCH model will often be able to
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美国国家经济研究局创建时间:
1994-08-01



