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Isotonic distributional regression (IDR) is a powerful nonparametric technique for the estimation of conditional distributions under order restrictions. In a nutshell, IDR learns conditional distributions that are calibrated, and…

统计方法学 · 统计学 2021-09-29 Alexander Henzi , Johanna F. Ziegel , Tilmann Gneiting

We propose a reinforcement learning method for estimating an optimal dynamic treatment regime for survival outcomes with dependent censoring. The estimator allows the failure time to be conditionally independent of censoring and dependent…

统计方法学 · 统计学 2022-05-13 Hunyong Cho , Shannon T. Holloway , David J. Couper , Michael R. Kosorok

Ensemble learning methods are designed to benefit from multiple learning algorithms for better predictive performance. The tradeoff of this improved performance is slower speed and larger size of ensemble learning systems compared to single…

机器学习 · 计算机科学 2021-01-22 Abolfazl Nadi , Hadi Moradi , Khalil Taheri

The perspective of developing trustworthy AI for critical applications in science and engineering requires machine learning techniques that are capable of estimating their own uncertainty. In the context of regression, instead of estimating…

机器学习 · 计算机科学 2026-05-14 Quentin Duchemin , Guillaume Obozinski

Despite attractive theoretical guarantees and practical successes, Predictive Interval (PI) given by Conformal Prediction (CP) may not reflect the uncertainty of a given model. This limitation arises from CP methods using a constant…

机器学习 · 统计学 2023-06-01 Salim I. Amoukou , Nicolas J. B Brunel

Random Forest (RF) is a widely used ensemble learning technique known for its robust classification performance across diverse domains. However, it often relies on hundreds of trees and all input features, leading to high inference cost and…

机器学习 · 计算机科学 2025-07-08 Sijan Bhattarai , Saurav Bhandari , Girija Bhusal , Saroj Shakya , Tapendra Pandey

We present a novel tuning procedure for random forests (RFs) that improves the accuracy of estimated quantiles and produces valid, relatively narrow prediction intervals. While RFs are typically used to estimate mean responses (conditional…

统计方法学 · 统计学 2025-07-03 Matthew Berkowitz , Rachel MacKay Altman , Thomas M. Loughin

Despite the impressive performance of random forests (RF), its theoretical properties have not been thoroughly understood. In this paper, we propose a novel RF framework, dubbed multinomial random forest (MRF), to analyze the…

机器学习 · 计算机科学 2020-06-09 Yiming Li , Jiawang Bai , Jiawei Li , Xue Yang , Yong Jiang , Chun Li , Shutao Xia

The most popular approach for analyzing survival data is the Cox regression model. The Cox model may, however, be misspecified, and its proportionality assumption may not always be fulfilled. An alternative approach for survival prediction…

机器学习 · 统计学 2018-05-17 Marvin N. Wright , Theresa Dankowski , Andreas Ziegler

Determining subgroups that respond especially well (or poorly) to specific interventions (medical or policy) requires new supervised learning methods tailored specifically for causal inference. Bayesian Causal Forest (BCF) is a recent…

机器学习 · 统计学 2022-09-16 Nikolay Krantsevich , Jingyu He , P. Richard Hahn

Interval-censored multi state data is collected when the state of a subject is observed periodically. The analysis of such data using non-parametric multi-state models was not possible until recently, but is very desirable as it allows for…

统计方法学 · 统计学 2025-07-16 Daniel Gomon , Hein Putter

Under adaptive progressive Type-II censoring schemes, order restricted inference based on competing risks data is discussed in this article. The latent failure lifetimes for the competing causes are assumed to follow Weibull distributions,…

统计方法学 · 统计学 2022-05-10 Ayon Ganguly , Debanjan Mitra , Debasis Kundu

We discuss an application of Generalized Random Forests (GRF) proposed by Athey et al.(2019) to quantile regression for time series data. We extracted the theoretical results of the GRF consistency for i.i.d. data to time series data. In…

统计理论 · 数学 2022-11-07 Hiroshi Shiraishi , Tomoshige Nakamura , Ryotato Shibuki

In this paper, we propose Random Forests by Random Weights (RF-RW), a theoretically grounded and practically effective alternative RF modelling for nonlinear time series data, where existing RF-based approaches struggle to adequately…

统计方法学 · 统计学 2025-11-18 Shihao Zhang , Zudi Lu , Chao Zheng

Facial age estimation is an important and challenging problem in computer vision. Existing approaches usually employ deep neural networks (DNNs) to fit the mapping from facial features to age, even though there exist some noisy and…

计算机视觉与模式识别 · 计算机科学 2020-04-20 Shijie Ai , Lili Pan , Yazhou Ren

This paper considers doing quantile regression on censored data using neural networks (NNs). This adds to the survival analysis toolkit by allowing direct prediction of the target variable, along with a distribution-free characterisation of…

机器学习 · 统计学 2023-02-07 Tim Pearce , Jong-Hyeon Jeong , Yichen Jia , Jun Zhu

Learning a regression function using censored or interval-valued output data is an important problem in fields such as genomics and medicine. The goal is to learn a real-valued prediction function, and the training output labels indicate an…

机器学习 · 统计学 2017-10-30 Alexandre Drouin , Toby Dylan Hocking , François Laviolette

This paper presents a brand new nonparametric density estimation strategy named the best-scored random forest density estimation whose effectiveness is supported by both solid theoretical analysis and significant experimental performance.…

机器学习 · 统计学 2019-05-10 Hanyuan Hang , Hongwei Wen

Class imbalance poses a major challenge in different classification tasks, which is a frequently occurring scenario in many real-world applications. Data resampling is considered to be the standard approach to address this issue. The goal…

机器学习 · 计算机科学 2024-08-31 Asif Newaz , Md. Salman Mohosheu , MD. Abdullah al Noman , Taskeed Jabid

We adopt data structure in the form of cover trees and iteratively apply approximate nearest neighbour (ANN) searches for fast compressed sensing reconstruction of signals living on discrete smooth manifolds. Levering on the recent…

机器学习 · 统计学 2018-09-13 Mohammad Golbabaee , Zhouye Chen , Yves Wiaux , Mike E. Davies