On grouping effect of elastic net

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On the Stability of Feature Selection Algorithms (2017, background): “L2-regularization (ridge regression), is known to have a grouping effect: correlated features will have similar coefficients (Zhou, 2013).”
Aperiodic parameters of the fMRI power spectrum associate with preterm birth and neonatal age (2026, unknown): “In contrast, elastic net accomplishes a grouping effect via l2-regularization, which is known to correct the instability-inducing tendency for arbitrary choice between correlated predictors 101 and is considered a standard predictive algorithm in machine learning based neuroimaging studies 86 .”