scholarly journals Variable Selection in a Log–Linear Birnbaum–Saunders Regression Model for High-Dimensional Survival Data via the Elastic-Net and Stochastic EM

Technometrics ◽  
2016 ◽  
Vol 58 (3) ◽  
pp. 383-392 ◽  
Author(s):  
Yukun Zhang ◽  
Xuewen Lu ◽  
Anthony F. Desmond

2021 ◽  
Author(s):  
Mu Yue

In high-dimensional data, penalized regression is often used for variable selection and parameter estimation. However, these methods typically require time-consuming cross-validation methods to select tuning parameters and retain more false positives under high dimensionality. This chapter discusses sparse boosting based machine learning methods in the following high-dimensional problems. First, a sparse boosting method to select important biomarkers is studied for the right censored survival data with high-dimensional biomarkers. Then, a two-step sparse boosting method to carry out the variable selection and the model-based prediction is studied for the high-dimensional longitudinal observations measured repeatedly over time. Finally, a multi-step sparse boosting method to identify patient subgroups that exhibit different treatment effects is studied for the high-dimensional dense longitudinal observations. This chapter intends to solve the problem of how to improve the accuracy and calculation speed of variable selection and parameter estimation in high-dimensional data. It aims to expand the application scope of sparse boosting and develop new methods of high-dimensional survival analysis, longitudinal data analysis, and subgroup analysis, which has great application prospects.



2021 ◽  
Author(s):  
Ali Hussain AL-Rammahi ◽  
Tahir R. Dikheel


2017 ◽  
Vol 91 ◽  
pp. 159-167 ◽  
Author(s):  
Julia Gilhodes ◽  
Christophe Zemmour ◽  
Soufiane Ajana ◽  
Alejandra Martinez ◽  
Jean-Pierre Delord ◽  
...  






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