Search Results for author: Richard Baumgartner

Found 7 papers, 0 papers with code

Challenges in Variable Importance Ranking Under Correlation

no code implementations5 Feb 2024 Annie Liang, Thomas Jemielita, Andy Liaw, Vladimir Svetnik, Lingkang Huang, Richard Baumgartner, Jason M. Klusowski

Recently, several adjustments to marginal permutation utilizing feature knockoffs were proposed to address this issue, such as the variable importance measure known as conditional predictive impact (CPI).

Feature Correlation Interpretable Machine Learning

Target alignment in truncated kernel ridge regression

no code implementations28 Jun 2022 Arash A. Amini, Richard Baumgartner, Dai Feng

We show that for polynomial alignment, there is an \emph{over-aligned} regime, in which TKRR can achieve a faster rate than what is achievable by full KRR.

regression

A Framework for an Assessment of the Kernel-target Alignment in Tree Ensemble Kernel Learning

no code implementations19 Aug 2021 Dai Feng, Richard Baumgartner

Kernels ensuing from tree ensembles such as random forest (RF) or gradient boosted trees (GBT), when used for kernel learning, have been shown to be competitive to their respective tree ensembles (particularly in higher dimensional scenarios).

(Decision and regression) tree ensemble based kernels for regression and classification

no code implementations19 Dec 2020 Dai Feng, Richard Baumgartner

We elucidate the performance and properties of the RF and GBT based kernels in a comprehensive simulation study comprising of continuous and binary targets.

General Classification regression

Random Forest (RF) Kernel for Regression, Classification and Survival

no code implementations31 Aug 2020 Dai Feng, Richard Baumgartner

We elucidate the performance and properties of the data driven RF kernels used by regularized linear models in a comprehensive simulation study comprising of continuous, binary and survival targets.

Classification General Classification +1

A deep learning-facilitated radiomics solution for the prediction of lung lesion shrinkage in non-small cell lung cancer trials

no code implementations5 Mar 2020 Antong Chen, Jennifer Saouaf, Bo Zhou, Randolph Crawford, Jianda Yuan, Junshui Ma, Richard Baumgartner, Shubing Wang, Gregory Goldmacher

Herein we propose a deep learning-based approach for the prediction of lung lesion response based on radiomic features extracted from clinical CT scans of patients in non-small cell lung cancer trials.

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