“Squeezing the most out of ridge”
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If you have a question about this talk, please contact Alison Quenault.
Ridge regression is nowadays regarded as a somewhat old-fashioned technique: most statisticians prefer sparse models, while machine learners use non-linear, multi-layer prediction algorithms. The aim of this talk is to endorse ridge by illustrating its strengths, from a methodological, computational and applied perspective, including:
Flexibility (in terms of output and type of covariates)
Bayesian counterpart facilitates empirical Bayes estimation of penalty parameter(s)
Differential penalization for multi-modal (e.g. multi-omics) data
Penalty weights moderated by (external) information on the features:
Co-data
Effective posterior feature selection
Computational efficiency
Performance in clinical (omics) prediction problems
These strengths will be illustrated on a cancer multi-omics prediction problem.
This talk is part of the MRC Biostatistics Unit Seminars series.
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