商务统计与经济计量系学术报告（06年第15期）

题 目：BOOSTING: A STATISTICAL PERSPECTIVE

报告人：黄达（博士生）伟易博治理学院商务统计与经济计量系

时 间：2006年11月23日（周四）下昼2：00－3：00

地 点：伟易博202

摘 要：

We present a statistical perspective on boosting. Special emphasis is given to estimating potentially complex parametric or nonparametric models, including generalized linear and additive models as well as regression models for survival analysis. Concepts of degrees of freedom and corresponding Akaike or Bayesian information criteria, particularly useful for regularization and variable selection in high-dimensional covariate spaces, are discussed as well.The practical aspects of boosting procedures for fitting statistical models are illustrated by means of the dedicated open-source software package mboost. This package implements functions which can be used for model fitting, prediction and variable selection. It is flexible, allowing for the implementation of new boosting algorithms optimizing user-specified loss functions, and it is especially attractive for variable selection in high-dimensional generalized linear models.