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Randomized clinical trials are the gold standard when estimating the average treatment effect. However, they are usually not a random sample from the real-world population because of the inclusion/exclusion rules. Meanwhile, observational…

统计方法学 · 统计学 2024-12-11 Kuan Jiang , Wenjie Hu , Shu Yang , Xinxing Lai , Xiaohua Zhou

In reinforcement learning (RL), it is often advantageous to consider additional constraints on the action space to ensure safety or action relevance. Existing work on such action-constrained RL faces challenges regarding effective policy…

机器学习 · 计算机科学 2025-12-01 Roland Stolz , Michael Eichelbeck , Matthias Althoff

The development of rigorous quality assessment model relies on the collection of reliable subjective data, where the perceived quality of visual multimedia is rated by the human observers. Different subjective assessment protocols can be…

人工智能 · 计算机科学 2020-10-02 Suiyi Ling , Jing Li , Anne Flore Perrin , Zhi Li , Lukáš Krasula , Patrick Le Callet

Anomalies often occur in real-world information networks/graphs, such as malevolent users, malicious comments, banned users, and fake news in social graphs. The latest graph anomaly detection methods use a novel mechanism called truncated…

社会与信息网络 · 计算机科学 2026-03-03 Xiong Zhang , Hong Peng , Zhenli He , Cheng Xie , Xin Jin , Hua Jiang

Research on the localization of the genetic basis associated with diseases or traits has been widely conducted in the last a few decades. Scan methods have been developed for region-based analysis in whole-genome association studies,…

统计方法学 · 统计学 2024-10-31 Wei Zhang , Fan Wang , Fang Yao

We propose and justify a new approach to constructing optimal nonlinear transforms of random vectors. We show that the proposed transform improves such characteristics of rank-reduced transforms as compression ratio, accuracy of…

最优化与控制 · 数学 2008-04-24 Anatoli Torokhti , Phil Howlett

Network management protocols often require timely and meaningful insight about per flow network traffic. This paper introduces Randomized Admission Policy (RAP) - a novel algorithm for the frequency and top-k estimation problems, which are…

数据结构与算法 · 计算机科学 2016-12-12 Ran Ben Basat , Gil Einziger , Roy Friedman , Yaron Kassner

In terms of signal samples, we propose and justify a new rank reduced multi-term transform, abbreviated as MTT, which, under certain conditions, may provide better-associated accuracy than that of known optimal rank reduced transforms. The…

最优化与控制 · 数学 2021-11-11 Pablo Soto-Quiros , Anatoli Torokhti

Future generations of mobile networks are expected to contain more and more antennas with growing complexity and more parameters. Optimizing these parameters is necessary for ensuring the good performance of the network. The scale of mobile…

网络与互联网体系结构 · 计算机科学 2023-02-03 Maxime Bouton , Jaeseong Jeong , Jose Outes , Adriano Mendo , Alexandros Nikou

The use of propensity score (PS) methods has become ubiquitous in causal inference. At the heart of these methods is the positivity assumption. Violation of the positivity assumption leads to the presence of extreme PS weights when…

统计方法学 · 统计学 2024-05-21 Yi Liu , Huiyue Li , Yunji Zhou , Roland Matsouaka

Genome-wide association studies have proven to be essential for understanding the genetic basis of disease. However, many complex traits---personality traits, facial features, disease subtyping---are inherently high-dimensional, impeding…

应用统计 · 统计学 2015-12-09 Ashlee Valente , Geoffrey Ginsburg , Barbara E Engelhardt

The operating status of power systems is influenced by growing varieties of factors, resulting from the developing sizes and complexity of power systems; in this situation, the modelbased methods need be revisited. A data-driven method, as…

统计方法学 · 统计学 2016-07-07 Xinyi Xu , Xing He , Qian Ai , Robert C. Qiu

This study investigates the identification power gained by combining experimental data, in which treatment is randomized, with observational data, in which treatment is self-selected, for distributional treatment effect (DTE) parameters.…

计量经济学 · 经济学 2026-04-24 Shosei Sakaguchi

Low x-ray dose is desirable in x-ray computed tomographic (CT) imaging due to health concerns. But low dose comes with a cost of low signal artifacts such as streaks and low frequency bias in the reconstruction. As a result, low signal…

图像与视频处理 · 电气工程与系统科学 2023-09-26 Obaidullah Rahman , Ken D. Sauer , Charles A. Bouman , Roman Melnyk , Brian Nett

In the search for genetic factors that are associated with complex heritable human traits, considerable attention is now being focused on rare variants that individually have small effects. In response, numerous recent papers have proposed…

统计方法学 · 统计学 2014-09-10 Andriy Derkach , Jerry F. Lawless , Lei Sun

Meta-analysis of multiple genome-wide association studies (GWAS) is effective for detecting single or multi marker associations with complex traits. We develop a flexible procedure ("STAMP") based on mixture models to perform region based…

统计方法学 · 统计学 2018-01-01 Andriy Derkach , Ruth M. Pfeiffer

The large-scale multiple testing inherent to high throughput biological data necessitates very high statistical stringency and thus true effects in data are difficult to detect unless they have high effect sizes. One solution to this…

统计方法学 · 统计学 2017-12-21 Mohamad S. Hasan

Often both Aggregate Data (AD) studies and Individual Patient Data (IPD) studies are available for specific treatments. Combining these two sources of data could improve the overall meta-analytic estimates of treatment effects. Moreover,…

统计方法学 · 统计学 2021-11-15 Neha Agarwala , Junyong Park , Anindya Roy

Estimation of average treatment effects on the treated (ATT) is an important topic of causal inference in econometrics and statistics. This problem seems to be often treated as a simple modification or extension of that of estimating…

统计方法学 · 统计学 2018-08-07 Heng Shu , Zhiqiang Tan

Integrating the summary statistics from genome-wide association study (\textsc{gwas}) and expression quantitative trait loci (e\textsc{qtl}) data provides a powerful way of identifying the genes whose expression levels are potentially…

统计方法学 · 统计学 2020-11-23 Rong Ma , T. Tony Cai , Hongzhe Li