实验经济学实验室

报告题目：To pool or not to pool: Do we really need to make a choice?

报 告 人：Wendun Wang（王文敦）

报告时间：2016.05.16  9:30-11:00

报告地点：博学楼421

主办单位：科研处、实验经济学实验室、经济与社会发展研究院

【主讲人简介】

    王文敦，蒂尔堡大学经济研究中心博士，鹿特丹伊拉斯姆斯大学经济计量研究所助理教授，主要研究领域为计量经济学。其研究成果主要发表在Environmental & Resource Economics, Oxford Bulletin of Economics and Statistics, Econometric Reviews等国际期刊上。王文敦博士对应用计量经济学、高级计量经济学等有着丰富的教学经验。

【报告简介】

    This paper considers estimating the slope parameters in heterogeneous panel data regressions. We propose a novel optimal pooling averaging estimator that makes an explicit tradeoff between efficiency gains from pooling and bias due to heterogeneity. By theoretically and numerically comparing various estimators, we find that a uniformly best estimator does not exist and that our new estimator is superior in non-extreme cases. To decide which estimator to use, practical guidance is provided depending on features of data and models. As illustration we study the cross-country sovereign credit risk and shed new light on the determinants of sovereign credit default swap spreads.