主题：Empirical asset pricing via the conditional quantile variational autoencoder
主讲人：朱柯（香港大学）
主持人：王国长（暨南大学）
会议时间：2022年11月4日（周五）下午3：00-4：30
会议工具：腾讯会议（ID：305-837-475）
★摘要★
We propose a new asset pricing model that is applicable to the big panel of return data.Our model aims to explain the conditional mean of the return from the conditional distribution of the return,which is approximated by a step distribution function constructed from conditional quantiles of the return.To study conditional quantiles of the return,we propose a new conditional quantile variational autoencoder (CQVAE) network.The CQVAE network specifies a factor structure for conditional quantiles with latent factors learned from a VAE network and nonlinear factor loadings learned from a multi-head network.Under the CQVAE network,we allow the observed covariates such as asset characteristics to guide the structure of latent factors and factor loadings.Furthermore, we provide a two-step estimation procedure for the CQVAE network.Finally, we apply our CQVAE asset pricing model to analyze a 60-year US equity return data set.Compared with the benchmark conditional autoencoder model,the CQVAE model not only delivers much larger values of out-of-sample total and predictive R^2s,but also earns at least 30.9% higher values of Sharpe ratios for both long-short and long-only portfolios.
★主讲人简介★
朱柯博士2011年获得香港科技大学统计学博士学位，同年进入中国科学院数学与系统科学研究院从事研究工作，历任助理研究员、副研究员。2016年加入香港大学任助理教授、副教授。朱柯博士的研究兴趣包括统计建模、金融时间序列分析、计量经济、金融大数据、因果推断等领域。朱柯博士2015年获得中国科学院数学与系统科学研究院的“陈景润未来之星奖”，他的一系列论文发表在国际统计学和计量经济学顶级杂志Annals of Statistics,Journal of the Royal Statistical Society (Series B), Journal of American Statistics Association,Journal of Econometrics和Journal of Business & Economic Statistics。
