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- W4296933650 abstract "Linear Mixed-Effects (LME) models are a fundamental tool for modeling clustered data, including cohort studies, longitudinal data analysis, and meta-analysis. The design and analysis of variable selection methods for LMEs is considerably more difficult than for linear regression because LME models are nonlinear. The approach considered here is motivated by a recent method for sparse relaxed regularized regression (SR3) for variable selection in the context of linear regression. The theoretical underpinnings for the proposed extension to LMEs are developed, including consistency results, variational properties, implementability of optimization methods, and convergence results. In particular we provide convergence analyses for a basic implementation of SR3 for LME (called MSR3) and an accelerated hybrid algorithm (called MSR3-fast). Numerical results show the utility and speed of these algorithms on realistic simulated datasets. The numerical implementations are available in an open source python package pysr3." @default.
- W4296933650 created "2022-09-24" @default.
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- W4296933650 date "2022-09-21" @default.
- W4296933650 modified "2023-10-16" @default.
- W4296933650 title "Analysis of Relaxation Methods for Feature Selection in Mixed Effects Models" @default.
- W4296933650 doi "https://doi.org/10.48550/arxiv.2209.10575" @default.
- W4296933650 hasPublicationYear "2022" @default.
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