Adaptive Bayesian estimation of conditional discrete-continuous distributions with an application to stock market trading activity
Adaptive Bayesian estimation of conditional discrete-continuous distributions with an application to stock market trading activity
复制标题
条件离散连续分布的自适应贝叶斯估计及其在股票市场交易活动中的应用
DOI:
10.1016/j.jeconom.2021.11.004
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发表时间:
2022
影响因子:
6.3
通讯作者:
Pelenis, Justinas
中科院分区:
文献类型:
--
作者:
Norets, Andriy;Pelenis, Justinas
We consider Bayesian nonparametric estimation of conditional discrete-continuous distributions. Our model is based on a mixture of normal distributions with covariate dependent mixing probabilities. We use continuous latent variables for modeling the discrete part of the distribution. The marginal distribution of covariates is not modeled. Under anisotropic smoothness conditions on the data generating conditional distribution and a possibly increasing number of the support points for the discrete part of the distribution, we show that the posterior in our model contracts at frequentist adaptive optimal rates up to a log factor. Our results also imply an upper bound on the posterior contraction rate for predictive distributions when the data follow an ergodic Markov process and our model is used for modeling the Markov transition distribution. The proposed model performs well in an application to stock market trading activity.
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DOI:
--
发表时间:
2012
期刊:
影响因子:
--
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影响因子:
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DOI:
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