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Modern graph representation learning works mostly under the assumption of dealing with regularly sampled temporal graph snapshots, which is far from realistic, e.g., social networks and physical systems are characterized by continuous…

机器学习 · 计算机科学 2024-09-11 Alessio Gravina , Daniele Zambon , Davide Bacciu , Cesare Alippi

Data has now become a shortcoming of deep learning. Researchers in their own fields share the thinking that "deep neural networks might not always perform better when they eat more data," which still lacks experimental validation and a…

机器学习 · 计算机科学 2022-05-31 Jiachen Yang , Zhuo Zhang , Yicheng Gong , Shukun Ma , Xiaolan Guo , Yue Yang , Shuai Xiao , Jiabao Wen , Yang Li , Xinbo Gao , Wen Lu , Qinggang Meng

The ability to detect Out-of-Distribution (OOD) data is important in safety-critical applications of deep learning. The aim is to separate In-Distribution (ID) data drawn from the training distribution from OOD data using a measure of…

机器学习 · 计算机科学 2022-09-21 Guoxuan Xia , Christos-Savvas Bouganis

Deep Learning (DL) methods have dramatically increased in popularity in recent years, with significant growth in their application to supervised learning problems in the biomedical sciences. However, the greater prevalence and complexity of…

机器学习 · 统计学 2023-10-30 David K Lim , Naim U Rashid , Junier B Oliva , Joseph G Ibrahim

Electronic health record (EHR) data is sparse and irregular as it is recorded at irregular time intervals, and different clinical variables are measured at each observation point. In this work, we propose a multi-view features integration…

机器学习 · 计算机科学 2021-01-27 Yurim Lee , Eunji Jun , Heung-Il Suk

When deploying time series forecasting models based on machine learning to real world settings, one often encounter situations where the data distribution drifts. Such drifts expose the forecasting models to out-of-distribution (OOD) data,…

Datasets with missing values are very common on industry applications, and they can have a negative impact on machine learning models. Recent studies introduced solutions to the problem of imputing missing values based on deep generative…

机器学习 · 计算机科学 2019-02-28 Ramiro D. Camino , Christian A. Hammerschmidt , Radu State

Improving the accuracy of deep neural networks (DNNs) on out-of-distribution (OOD) data is critical to an acceptance of deep learning (DL) in real world applications. It has been observed that accuracies on in-distribution (ID) versus OOD…

There has been a significant focus on modelling emotion ambiguity in recent years, with advancements made in representing emotions as distributions to capture ambiguity. However, there has been comparatively less effort devoted to the…

人工智能 · 计算机科学 2024-08-01 Jingyao Wu , Ting Dang , Vidhyasaharan Sethu , Eliathamby Ambikairajah

Event detection in time series is a challenging task due to the prevalence of imbalanced datasets, rare events, and time interval-defined events. Traditional supervised deep learning methods primarily employ binary classification, where…

机器学习 · 统计学 2024-09-16 Menouar Azib , Benjamin Renard , Philippe Garnier , Vincent Génot , Nicolas André

Forecasting with multivariate time series, which aims to predict future values given previous and current several univariate time series data, has been studied for decades, with one example being ARIMA. Because it is difficult to measure…

人工智能 · 计算机科学 2020-10-19 Youngjin Park , Deokjun Eom , Byoungki Seo , Jaesik Choi

Handling missing data in time series is a complex problem due to the presence of temporal dependence. General-purpose imputation methods, while widely used, often distort key statistical properties of the data, such as variance and…

统计方法学 · 统计学 2026-03-18 Guilherme Pumi , Taiane Schaedler Prass , Douglas Krauthein Verdum

In several practical applications, particularly healthcare, clinical data of each patient is individually recorded in a database at irregular intervals as required. This causes a sparse and irregularly sampled time series, which makes it…

机器学习 · 计算机科学 2025-04-09 Mincheol Kim , Soo-Yong Shin

Order-Agnostic autoregressive models have demonstrated strong performance in deep generative modeling, yet their use in settings with incomplete data remains largely unexplored. In this work, we reinterpret them through the lens of missing…

机器学习 · 计算机科学 2026-05-29 Ignacio Peis , Pablo M. Olmos , Jes Frellsen

Ensuring reliability is paramount in deep learning, particularly within the domain of medical imaging, where diagnostic decisions often hinge on model outputs. The capacity to separate out-of-distribution (OOD) samples has proven to be a…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Anju Chhetri , Jari Korhonen , Prashnna Gyawali , Binod Bhattarai

Deep neural networks (DNNs), while increasingly deployed in many applications, struggle with robustness against anomalous and out-of-distribution (OOD) data. Current OOD benchmarks often oversimplify, focusing on single-object tasks and not…

计算机视觉与模式识别 · 计算机科学 2024-09-30 Debargha Ganguly , Debayan Gupta , Vipin Chaudhary

Neural ordinary differential equations (neural ODEs) have emerged as a novel network architecture that bridges dynamical systems and deep learning. However, the gradient obtained with the continuous adjoint method in the vanilla neural ODE…

机器学习 · 计算机科学 2023-06-12 Hong Zhang , Wenjun Zhao

Machine Learning (ML) has been widely used in Natural Language Processing (NLP) applications. A fundamental assumption in ML is that training data and real-world data should follow a similar distribution. However, a deployed ML model may…

人机交互 · 计算机科学 2023-03-06 Da Song , Zhijie Wang , Yuheng Huang , Lei Ma , Tianyi Zhang

Traditional machine learning methods face two main challenges in dealing with healthcare predictive analytics tasks. First, the high-dimensional nature of healthcare data needs labor-intensive and time-consuming processes to select an…

机器学习 · 计算机科学 2022-09-16 Mohammad Amin Morid , Olivia R. Liu Sheng , Joseph Dunbar

Recent advances in deep learning architectures for sequence modeling have not fully transferred to tasks handling time-series from electronic health records. In particular, in problems related to the Intensive Care Unit (ICU), the…

机器学习 · 计算机科学 2024-02-07 Rita Kuznetsova , Alizée Pace , Manuel Burger , Hugo Yèche , Gunnar Rätsch