报告题目:Economic Forecasting in a Data-rich and Unstable Environment
报告人:李海奇
时间:11月20日(周三)下午15:00-16:00
地点:西安交通大学创新港涵英楼8121会议室
报告人简介:
李海奇,湖南大学金融与统计学院教授、博士生导师、副院长,曾任美国康奈尔大学经济学系访问学者(2014.8-2015.8)。目前研究方向为金融计量经济学、金融工程和数字经济,研究成果发表于经济学国际顶尖和权威期刊以及中文重点期刊,如Journal of Econometrics,Econometric Reviews,《数量经济技术经济研究》《统计研究》《中国管理科学》等。曾主持湖南省自然科学基金杰出青年项目、国家自然科学基金项目、教育部人文社科规划基金项目等多项国家和省部级科研项目。曾获得湖南大学科研标兵、湖南大学优秀教师等荣誉或奖励。
摘要:
Economic forecasting in a data-rich environment encounters several challenges. First, using high-dimensional variables for prediction makes traditional econometric methods ineffective. Second, investors face model uncertainty. Finally, many variables exhibit structural changes. In this talk, I will introduce two novel methods, which can address the model uncertainty and parameter instability issues in a data-rich environment. One is “time-varying forecast combination for factor-augmented regression,” and the other is “time-varying complete subset averaging.” Their large sample properties are established. Two empirical applications show the merits of these two methods.
经济与金融学院
2024年11月13日