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Facial landmark detection is an important yet challenging task for real-world computer vision applications. This paper proposes an effective and robust approach for facial landmark detection by combining data- and model-driven methods.…

计算机视觉与模式识别 · 计算机科学 2018-02-13 Hongwen Zhang , Qi Li , Zhenan Sun , Yunfan Liu

Identifying prognostic factors for disease progression is a cornerstone of medical research. Repeated assessments of a marker outcome are often used to evaluate disease progression, and the primary research question is to identify factors…

统计计算 · 统计学 2022-10-24 Brian Kwan , Lin Liu , David Strong , H. Irene Su , Loki Natarajan

Heterogeneous treatment effect estimation is critical in oncology, particularly in multi-arm trials with overlapping therapeutic components and long-term survivors. These shared mechanisms pose a central challenge to identifying causal…

统计方法学 · 统计学 2025-10-29 Peter Chang , John Kairalla , Arkaprava Roy

Two different approaches to analysis of data from diagnostic biomarker studies are commonly employed. Logistic regression is used to fit models for probability of disease given marker values, while ROC curves and risk distributions are used…

应用统计 · 统计学 2013-12-02 Ying Huang , Margaret S. Pepe , Ziding Feng

In recent medical studies, the combination of longitudinal measurements with time-to-event data has increased the demand for more sophisticated models without unbiased estimates. Joint models for longitudinal and survival data have been…

统计方法学 · 统计学 2025-08-01 Dionisio Silva Neto , Denis Rustand , Haavard Rue , Danilo Alvares , Vera L. Tomazella

The sequential treatment decisions made by physicians to treat chronic diseases are formalized in the statistical literature as dynamic treatment regimes. To date, methods for dynamic treatment regimes have been developed under the…

统计方法学 · 统计学 2022-02-22 Janie Coulombe , Erica E. M. Moodie , Susan M. Shortreed , Christel Renoux

Randomized clinical trials (RCTs) are ideal for estimating causal effects, because the distributions of background covariates are similar in expectation across treatment groups. When estimating causal effects using observational data,…

统计方法学 · 统计学 2019-02-27 Anthony D. Scotina , Roee Gutman

Accurate and interpretable survival analysis remains a core challenge in oncology. With growing multimodal data and the clinical need for transparent models to support validation and trust, this challenge increases in complexity. We propose…

人工智能 · 计算机科学 2025-09-29 Mafalda Malafaia , Peter A. N. Bosman , Coen Rasch , Tanja Alderliesten

Joint models for longitudinal and survival data have gained a lot of attention in recent years, with the development of myriad extensions to the basic model, including those which allow for multivariate longitudinal data, competing risks…

统计方法学 · 统计学 2020-03-09 Katya Mauff , Ewout Steyerberg , Isabella Kardys , Eric Boersma , Dimitris Rizopoulos

Excess hazard modeling is one of the main tools in population-based cancer survival research. Indeed, this setting allows for direct modeling of the survival due to cancer even in the absence of reliable information on the cause of death,…

统计方法学 · 统计学 2022-04-12 A. Eletti , G. Marra , M. Quaresma , R. Radice , F. J. Rubio

Automatic and accurate detection of anatomical landmarks is an essential operation in medical image analysis with a multitude of applications. Recent deep learning methods have improved results by directly encoding the appearance of the…

计算机视觉与模式识别 · 计算机科学 2021-05-20 Guang-Quan Zhou , Juzheng Miao , Xin Yang , Rui Li , En-Ze Huo , Wenlong Shi , Yuhao Huang , Jikuan Qian , Chaoyu Chen , Dong Ni

Adaptive enrichment allows for pre-defined patient subgroups of interest to be investigated throughout the course of a clinical trial. Many trials which measure a long-term time-to-event endpoint often also routinely collect repeated…

统计方法学 · 统计学 2024-02-26 Abigail J. Burdon , Richard D. Baird , Thomas Jaki

In this paper, a mixed-effect modeling scheme is proposed to construct a predictor for different features of cancer tumor. For this purpose, a set of features is extracted from two groups of patients with the same type of cancer but with…

应用统计 · 统计学 2018-04-13 Fatemeh Nasiri , Oscar Acosta-Tamayo

Many relevant statistical and econometric models for the analysis of longitudinal data include a latent process to account for the unobserved heterogeneity between subjects in a dynamic fashion. Such a process may be continuous (typically…

统计理论 · 数学 2011-08-09 Francesco Bartolucci , Silvia Bacci , Fulvia Pennoni

Joint models for a wide class of response variables and longitudinal measurements consist on a mixed-effects model to fit longitudinal trajectories whose random effects enter as covariates in a generalized linear model for the primary…

统计方法学 · 统计学 2014-07-03 Rolando De la Cruz , Cristian Meza , Ana Arribas-Gil , Raymond J. Carroll

Traditional model-based diagnosis relies on constructing explicit system models, a process that can be laborious and expertise-demanding. In this paper, we propose a novel framework that combines concepts of model-based diagnosis with deep…

人工智能 · 计算机科学 2023-10-11 Jan Lukas Augustin , Oliver Niggemann

In recent years, research interest in personalised treatments has been growing. However, treatment effect heterogeneity and possibly time-varying treatment effects are still often overlooked in clinical studies. Statistical tools are needed…

统计方法学 · 统计学 2023-10-27 Caterina Gregorio , Giovanni Baj , Giulia Barbati , Francesca Ieva

We propose a novel approach to estimate the Cox model with temporal covariates. Our new approach treats the temporal covariates as arising from a longitudinal process which is modeled jointly with the event time. Different from the…

统计方法学 · 统计学 2018-02-05 Xiaoqi Zhang , Xiaobing Zhao , Yanqiao Zheng

Despite the versatility of generalized linear mixed models in handling complex experimental designs, they often suffer from misspecification and convergence problems. This makes inference on the values of coefficients problematic. To…

统计方法学 · 统计学 2025-03-31 Angela Andreella , Jelle Goeman , Jesse Hemerik , Livio Finos

Dose-finding trials for oncology studies are traditionally designed to assess safety in the early stages of drug development. With the rise of molecularly targeted therapies and immuno-oncology compounds, biomarker-driven approaches have…

统计方法学 · 统计学 2025-09-15 Xijin Chen , Pavel Mozgunov , Richard D. Baird , Thomas Jaki