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Machine learning-based Deepfake detection models have achieved impressive results on benchmark datasets, yet their performance often deteriorates significantly when evaluated on out-of-distribution data. In this work, we investigate an…

计算机视觉与模式识别 · 计算机科学 2025-07-09 Haroon Wahab , Hassan Ugail , Lujain Jaleel

Ensembling a neural network is a widely recognized approach to enhance model performance, estimate uncertainty, and improve robustness in deep supervised learning. However, deep ensembles often come with high computational costs and memory…

Deep ensembles have been empirically shown to be a promising approach for improving accuracy, uncertainty and out-of-distribution robustness of deep learning models. While deep ensembles were theoretically motivated by the bootstrap,…

机器学习 · 统计学 2020-06-26 Stanislav Fort , Huiyi Hu , Balaji Lakshminarayanan

The subpopulationtion shift, characterized by a disparity in subpopulation distributibetween theween the training and target datasets, can significantly degrade the performance of machine learning models. Current solutions to subpopulation…

Ensemble learning is a methodology that integrates multiple DNN learners for improving prediction performance of individual learners. Diversity is greater when the errors of the ensemble prediction is more uniformly distributed. Greater…

机器学习 · 计算机科学 2019-08-30 Ling Liu , Wenqi Wei , Ka-Ho Chow , Margaret Loper , Emre Gursoy , Stacey Truex , Yanzhao Wu

Machine learning methods provide a general framework for automatically finding and representing the essential characteristics of simulation data. This task is particularly crucial in enhanced sampling simulations. There we seek a few…

化学物理 · 物理学 2021-07-07 Jakub Rydzewski , Omar Valsson

Deep neural network ensembles hold the potential of improving generalization performance for complex learning tasks. This paper presents formal analysis and empirical evaluation to show that heterogeneous deep ensembles with high ensemble…

计算机视觉与模式识别 · 计算机科学 2023-10-04 Yanzhao Wu , Ka-Ho Chow , Wenqi Wei , Ling Liu

The rapid emergence of high-dimensional data in various areas has brought new challenges to current ensemble clustering research. To deal with the curse of dimensionality, recently considerable efforts in ensemble clustering have been made…

机器学习 · 计算机科学 2021-09-07 Dong Huang , Chang-Dong Wang , Jian-Huang Lai , Chee-Keong Kwoh

Ensemble learning has gain attention in resent deep learning research as a way to further boost the accuracy and generalizability of deep neural network (DNN) models. Recent ensemble training method explores different training algorithms or…

机器学习 · 计算机科学 2023-01-20 Jingchi Zhang , Huanrui Yang , Hai Li

Training reliable respiratory sound classification models remains challenging due to the limited size and subject diversity of datasets. Ensemble methods can improve robustness, but when base models are trained on identical data, models…

机器学习 · 计算机科学 2026-04-28 June-Woo Kim , Miika Toikkanen , Heejoon Koo , Yoon Tae Kim , Doyoung Kwon , Kyunghoon Kim

Ensembles of neural networks achieve superior performance compared to stand-alone networks in terms of accuracy, uncertainty calibration and robustness to dataset shift. \emph{Deep ensembles}, a state-of-the-art method for uncertainty…

机器学习 · 计算机科学 2022-02-23 Sheheryar Zaidi , Arber Zela , Thomas Elsken , Chris Holmes , Frank Hutter , Yee Whye Teh

Aggregating multiple learners through an ensemble of models aim to make better predictions by capturing the underlying distribution of the data more accurately. Different ensembling methods, such as bagging, boosting, and stacking/blending,…

机器学习 · 统计学 2020-11-03 Mohsen Shahhosseini , Guiping Hu , Hieu Pham

This work proposes a unified framework for portfolio allocation, covering both asset selection and optimization, based on a multiple-hypothesis predict-then-optimize approach. The portfolio is modeled as a structured ensemble, where each…

投资组合管理 · 定量金融 2025-11-19 Alejandro Rodriguez Dominguez , Muhammad Shahzad , Xia Hong

Ensembles are widely used in machine learning and, usually, provide state-of-the-art performance in many prediction tasks. From the very beginning, the diversity of an ensemble has been identified as a key factor for the superior…

机器学习 · 计算机科学 2022-02-17 Luis A. Ortega , Rafael Cabañas , Andrés R. Masegosa

Ensemble learning is gaining renewed interests in recent years. This paper presents EnsembleBench, a holistic framework for evaluating and recommending high diversity and high accuracy ensembles. The design of EnsembleBench offers three…

机器学习 · 计算机科学 2020-10-22 Yanzhao Wu , Ling Liu , Zhongwei Xie , Juhyun Bae , Ka-Ho Chow , Wenqi Wei

We address unsupervised dependency parsing by building an ensemble of diverse existing models through post hoc aggregation of their output dependency parse structures. We observe that these ensembles often suffer from low robustness against…

计算与语言 · 计算机科学 2025-04-22 Behzad Shayegh , Hobie H. -B. Lee , Xiaodan Zhu , Jackie Chi Kit Cheung , Lili Mou

Heterogeneous ensembles built from the predictions of a wide variety and large number of diverse base predictors represent a potent approach to building predictive models for problems where the ideal base/individual predictor may not be…

机器学习 · 计算机科学 2021-03-01 Ana Stanescu , Gaurav Pandey

Ensemble learning combines several individual models to obtain better generalization performance. Currently, deep learning architectures are showing better performance compared to the shallow or traditional models. Deep ensemble learning…

机器学习 · 计算机科学 2022-08-09 M. A. Ganaie , Minghui Hu , A. K. Malik , M. Tanveer , P. N. Suganthan

Ensembling is a popular method used to improve performance as a last resort. However, ensembling multiple models finetuned from a single pretrained model has been not very effective; this could be due to the lack of diversity among ensemble…

机器学习 · 计算机科学 2022-05-25 Sosuke Kobayashi , Shun Kiyono , Jun Suzuki , Kentaro Inui

This study proposes median consensus embedding (MCE) to address variability in low-dimensional embeddings caused by random initialization in nonlinear dimensionality reduction techniques such as $t$-distributed stochastic neighbor…

机器学习 · 统计学 2025-12-10 Yui Tomo , Daisuke Yoneoka
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