37 citations · 48 across the 9 of their papers we have counts for
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stat.ML2026
Just add noise: Debiasing tree-based variable importance in mixed data
Jiahe Li, Omar Melikechi
Variable importance scores from tree-based methods such as random forests favor continuous predictors over categorical ones. We present a theoretical analysis of this bias and prop…
stat.ML2024
Nonparametric IPSS: Fast, flexible feature selection with false discovery control
Omar Melikechi, David B. Dunson, Jeffrey W. Miller
Feature selection is a critical task in machine learning and statistics. However, existing feature selection methods either (i) rely on parametric methods such as linear or general…
stat.ML2023★ 5 cited
Ellipsoid fitting with the Cayley transform
Omar Melikechi, David B. Dunson
We introduce Cayley transform ellipsoid fitting (CTEF), an algorithm that uses the Cayley transform to fit ellipsoids to noisy data in any dimension. Unlike many ellipsoid fitting…