Influence measures and robust estimators of dependence in multivariate extremes
Influence measures and robust estimators of dependence in multivariate extremes
复制标题
多元极端情况下的影响测量和稳健依赖性估计
DOI:
--
复制
发表时间:
2011
期刊:
影响因子:
--
通讯作者:
D. Dupuis
中科院分区:
文献类型:
--
作者:
Yu;D. Murdoch;D. Dupuis
We develop a simple influence measure to assess whether Bayesian estimators in multivariate extreme value problems are sensitive to outliers. The proposed measure is easy to compute by importance sampling and successfully captures two effects on the functional: the “data effect” and the “parameter uncertainty effect”. We also propose a new Bayesian estimator which is easy to implement and is robust. The methods are tested and illustrated using simulated data and then applied to stock market data.