Semiparametric ARCH Models
半参数 ARCH 模型AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要采用 ARMA 与 ARCH 刻画条件矩,并应用于日度股票收益和汇率,直接对应金融波动率建模与时间序列方法。
半参数 ARCH 模型AI 解读 ↓
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A semiparametric ARCH model is introduced with conditional first and second moments given by ARMA and ARCH formulations, and a conditional density that is approximated by a nonparametric density estimator. For several densities, the relative efficiency of the quasi-maximum likelihood estimator is compared with maximum likelihood under correct specification. These potential efficiency gains for a fully adaptive procedure are compared in a Monte Carlo experiment with the observed gains from using the semiparametric procedure, and it is found that the estimator captures a substantial proportion of the potential. The estimator is applied to daily stock returns and to the British pound/dollar exchange rate.
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