Penalized Q-Learning for Dynamic Treatment Regimens.
Penalized Q-Learning for Dynamic Treatment Regimens.
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DOI:
10.5705/ss.2012.364
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发表时间:
2015-07
影响因子:
1.4
通讯作者:
Kosorok MR
中科院分区:
文献类型:
--
作者:
Song R;Wang W;Zeng D;Kosorok MR
A dynamic treatment regimen incorporates both accrued information and long-term effects of treatment from specially designed clinical trials. As these trials become more and more popular in conjunction with longitudinal data from clinical studies, the development of statistical inference for optimal dynamic treatment regimens is a high priority. In this paper, we propose a new machine learning framework called penalized Q-learning, under which valid statistical inference is established. We also propose a new statistical procedure: individual selection and corresponding methods for incorporating individual selection within penalized Q-learning. Extensive numerical studies are presented which compare the proposed methods with existing methods, under a variety of scenarios, and demonstrate that the proposed approach is both inferentially and computationally superior. It is illustrated with a depression clinical trial study.