arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1802.00517stat.MEstat.AP
收藏

零调整Birnbaum-Saunders回归模型

Zero-adjusted Birnbaum-Saunders regression model

Vera Tomazella, Juvêncio S. Nobre, Gustavo H. A. Pereira, Manoel Santos-Neto

摘要:

本文介绍了零调整的Birnbaum-Saunders回归模型。这个新模型推广了至少七个Birnbaum-Saunders回归模型。这种建模的思想是将零处的退化分布与Birnbaum-Saunders分布混合。除了考虑多余零的能力之外,零调整的Birnbaum-Saunders分布还为右偏数据产生了一个有吸引力的建模结构。在该模型中,Birnbaum-Saunders分布的平均值和精度参数以及零的概率可以通过链接函数与线性和/或非线性预测因子相关。我们推导出一种类型的残差进行诊断分析和扰动计划,以确定那些观察施加不寻常的影响估计过程。最后,两个实际数据的应用程序显示了该模型的潜力。

英文摘要:

In this paper we introduce the zero-adjusted Birnbaum-Saunders regression model. This new model generalizes at least seven Birnbaum-Saunders regression models. The idea of this modeling is mixing a degenerate distribution at zero with a Birnbaum-Saunders distribution. Besides the capacity to account for excess zeros, the zero-adjusted Birnbaum-Saunders distribution additionally produces an attractive modeling structure to right-skewed data. In this model, the mean and precision parameter of the Birnbaum-Saunders distribution and the probability of zeros can be related to linear and/or non-linear predictors through link functions. We derive a type of residual to perform diagnostic analysis and a perturbation scheme for identifying those observations that exert unusual influence on the estimation process. Finally, two applications to real data show the potential of the model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑