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相关论文: Towards Flexible Time-to-event Modeling: Optimizin…

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Test-time adaptation aims to improve model robustness under distribution shifts by adapting models with access to unlabeled target samples. A primary cause of performance degradation under such shifts is the model's reliance on features…

机器学习 · 计算机科学 2025-10-14 Yingnan Liu , Rui Qiao , Mong Li Lee , Wynne Hsu

Methods for estimating heterogeneous treatment effect in observational data have largely focused on continuous or binary outcomes, and have been relatively less vetted with survival outcomes. Using flexible machine learning methods in the…

应用统计 · 统计学 2021-07-09 Liangyuan Hu , Jiayi Ji , Fan Li

The classical approach to analyze time-to-event data, e.g. in clinical trials, is to fit Kaplan-Meier curves yielding the treatment effect as the hazard ratio between treatment groups. Afterwards commonly a log-rank test is performed in…

统计方法学 · 统计学 2020-09-16 Kathrin Möllenhoff , Achim Tresch

Recurrent neural network based solutions are increasingly being used in the analysis of longitudinal Electronic Health Record data. However, most works focus on prediction accuracy and neglect prediction uncertainty. We propose Deep Kernel…

机器学习 · 计算机科学 2021-07-27 Zhiliang Wu , Yinchong Yang , Peter A. Fasching , Volker Tresp

The population-attributable fraction (PAF) expresses the proportion of events that can be ascribed to a certain exposure in a certain population. It can be strongly time-dependent because either exposure incidence or excess risk may change…

统计方法学 · 统计学 2023-12-27 Johan Steen , Pawel Morzywolek , Wim Van Biesen , Johan Decruyenaere , Stijn Vansteelandt

The complexity and scale of IT systems are increasing dramatically, posing many challenges to real-world anomaly detection. Deep learning anomaly detection has emerged, aiming at feature learning and anomaly scoring, which has gained…

机器学习 · 计算机科学 2023-12-05 Xue Yang , Enda Howley , Micheal Schukat

The probability prediction of multivariate time series is a notoriously challenging but practical task. On the one hand, the challenge is how to effectively capture the cross-series correlations between interacting time series, to achieve…

机器学习 · 计算机科学 2023-07-24 Shibo Feng , Chunyan Miao , Ke Xu , Jiaxiang Wu , Pengcheng Wu , Yang Zhang , Peilin Zhao

Time-to-event analysis provides insights into clinical prognosis and treatment recommendations. However, this task is more challenging than standard regression problems due to the presence of censored observations. Additionally, the lack of…

机器学习 · 计算机科学 2024-12-16 Ling Huang , Yucheng Xing , Swapnil Mishra , Thierry Denoeux , Mengling Feng

We propose AFTNet, a novel network-constraint survival analysis method based on the Weibull accelerated failure time (AFT) model solved by a penalized likelihood approach for variable selection and estimation. When using the log-linear…

机器学习 · 统计学 2024-02-29 Claudia Angelini , Daniela De Canditiis , Italia De Feis , Antonella Iuliano

Accelerated failure time (AFT) models are used widely in medical research, though to a much lesser extent than proportional hazards models. In an AFT model, the effect of covariates act to accelerate or decelerate the time to event of…

统计方法学 · 统计学 2020-06-15 Michael J. Crowther , Patrick Royston , Mark Clements

Without relevant human priors, neural networks may learn uninterpretable features. We propose Dynamics of Attention for Focus Transition (DAFT) as a human prior for machine reasoning. DAFT is a novel method that regularizes attention-based…

机器学习 · 统计学 2019-12-24 Wonjae Kim , Yoonho Lee

Survival regression is widely used to model time-to-events data, to explore how covariates may influence the occurrence of events. Modern datasets often encompass a vast number of covariates across many subjects, with only a subset of the…

统计方法学 · 统计学 2024-09-18 Abhishek Mandal , Abhisek Chakraborty

A frustratingly easy technique known as the prefilling attack has been shown to effectively circumvent the safety alignment of frontier LLMs by simply prefilling the assistant response with an affirmative prefix before decoding. In…

密码学与安全 · 计算机科学 2025-12-08 Jason Vega , Gagandeep Singh

Our objective is to construct well-calibrated prediction sets for a time-to-event outcome subject to right-censoring with guaranteed coverage. Inspired by modern conformal inference, our approach avoids the need for a well-specified…

统计方法学 · 统计学 2026-01-27 Rebecca Farina , Eric J. Tchetgen Tchetgen , Arun Kumar Kuchibhotla

Despite recent advances in dexterous manipulations, the manipulation of articulated objects and generalization across different categories remain significant challenges. To address these issues, we introduce DART, a novel framework that…

机器人学 · 计算机科学 2025-09-19 Hao Zhang , Zhen Kan , Weiwei Shang , Yongduan Song

Discrete-time hazard models are widely used when event times are measured in intervals or are not precisely observed. While these models can be estimated using standard generalized linear model techniques, they rely on extensive data…

统计方法学 · 统计学 2025-07-14 Benjamin Müller , Nikolaus Umlauf , Johannes Seiler , Kenneth Harttgen , Stefan Lang

Survival analysis is a widely known method for predicting the likelihood of an event over time. The challenge of dealing with censored samples still remains. Traditional methods, such as the Cox Proportional Hazards (CPH) model, hinge on…

机器学习 · 计算机科学 2025-01-10 Chanon Puttanawarut , Panu Looareesuwan , Romen Samuel Wabina , Prut Saowaprut

The accelerated failure time (AFT) models have proved useful in many contexts, though heavy censoring (as for example in cancer survival) and high dimensionality (as for example in microarray data) cause difficulties for model fitting and…

统计方法学 · 统计学 2013-12-10 Md Hasinur Rahaman Khan , J. Ewart H. Shaw

Survival analysis aims to model how covariates and time jointly shape the time-to-event distribution under right censoring. Classical methods such as the Cox model and generalised additive models (GAMs) require interactions and time-varying…

机器学习 · 统计学 2026-05-26 Stelios Boulitsakis Logothetis , Angela Wood , Pietro Liò

The semiparametric accelerated failure time (AFT) model offers a direct and interpretable alternative to the Cox proportional hazards model, yet practical diagnostic tools for this framework remain limited. We introduce afttest, an R…

统计计算 · 统计学 2026-03-09 Woojung Bae , Dongrak Choi , Jun Yan , Sangwook Kang