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Deep neural networks are often applied to medical images to automate the problem of medical diagnosis. However, a more clinically relevant question that practitioners usually face is how to predict the future trajectory of a disease.…

图像与视频处理 · 电气工程与系统科学 2023-09-20 Huy Hoang Nguyen , Matthew B. Blaschko , Simo Saarakkala , Aleksei Tiulpin

Spacecraft faces various situations when carrying out exploration missions in complex space, thus monitoring the anomaly status of spacecraft is crucial to the development of \textcolor{blue}{the} aerospace industry. The time series…

机器学习 · 计算机科学 2023-03-14 Liang Liu , Ling Tian , Zhao Kang , Tianqi Wan

Initial hours of hospital admission impact clinical trajectory, but early clinical decisions often suffer due to data paucity. With clustering analysis for vital signs within six hours of admission, patient phenotypes with distinct…

Modeling of longitudinal cohort data typically involves complex temporal dependencies between multiple variables. There, the transformer architecture, which has been highly successful in language and vision applications, allows us to…

Data-mining techniques have frequently been developed for Spontaneous reporting databases. These techniques aim to find adverse drug events accurately and efficiently. Spontaneous reporting databases are prone to missing information, under…

计算工程、金融与科学 · 计算机科学 2013-07-04 Jenna Reps , Jan Feyereisl , Jonathan M. Garibaldi , Uwe Aickelin , Jack E. Gibson , Richard B. Hubbard

The task of detecting anomalous data patterns is as important in practical applications as challenging. In the context of spatial data, recognition of unexpected trajectories brings additional difficulties, such as high dimensionality and…

Real-world non-autonomous systems are open, out-of-equilibrium systems that evolve in and are driven by temporally varying environments. Such systems can show multiple timescale and transient dynamics together with transitions to very…

数据分析、统计与概率 · 物理学 2024-07-12 Klaus Lehnertz

Network data has emerged as an active research area in statistics. Much of the focus of ongoing research has been on static networks that represent a single snapshot or aggregated historical data unchanging over time. However, most networks…

应用统计 · 统计学 2021-02-23 Lata Kodali , Srijan Sengupta , Leanna House , William H. Woodall

Pathological brain appearances may be so heterogeneous as to be intelligible only as anomalies, defined by their deviation from normality rather than any specific pathological characteristic. Amongst the hardest tasks in medical imaging,…

图像与视频处理 · 电气工程与系统科学 2021-02-24 Walter Hugo Lopez Pinaya , Petru-Daniel Tudosiu , Robert Gray , Geraint Rees , Parashkev Nachev , Sebastien Ourselin , M. Jorge Cardoso

Unsupervised anomaly detection is a daunting task, as it relies solely on normality patterns from the training data to identify unseen anomalies during testing. Recent approaches have focused on leveraging domain-specific transformations or…

机器学习 · 计算机科学 2024-09-17 Hyuntae Kim , Changhee Lee

The surge in real-time data collection across various industries has underscored the need for advanced anomaly detection in both univariate and multivariate time series data. This paper introduces TransNAS-TSAD, a framework that synergizes…

机器学习 · 计算机科学 2024-03-06 Ijaz Ul Haq , Byung Suk Lee , Donna M. Rizzo

Time series subsequence anomaly detection is an important task in a large variety of real-world applications ranging from health monitoring to AIOps, and is challenging due to the following reasons: 1) how to effectively learn complex…

机器学习 · 计算机科学 2024-11-27 Weiqi Chen , Zhiqiang Zhou , Qingsong Wen , Liang Sun

Broad spectrum of urban activities including mobility can be modeled as temporal networks evolving over time. Abrupt changes in urban dynamics caused by events such as disruption of civic operations, mass crowd gatherings, holidays and…

Analyzing the behaviour of a population in response to disease and interventions is critical to unearth variability in healthcare as well as understand sub-populations that require specialized attention, but also to assist in designing…

机器学习 · 计算机科学 2021-11-30 Isaiah Onando Mulang' , William Ogallo , Girmaw Abebe Tadesse , Aisha Walcott-Bryant

Estimation of treatment efficacy of real-world clinical interventions involves working with continuous outcomes such as time-to-death, re-hospitalization, or a composite event that may be subject to censoring. Counterfactual reasoning in…

机器学习 · 计算机科学 2022-08-11 Chirag Nagpal , Mononito Goswami , Keith Dufendach , Artur Dubrawski

We present an end-to-end differentiable neural network architecture to perform anomaly detection in multivariate time series by incorporating a Sequential Probability Ratio Test on the prediction residual. The architecture is a cascade of…

机器学习 · 计算机科学 2022-02-28 L. Zancato , A. Achille , G. Paolini , A. Chiuso , S. Soatto

Randomized trials and observational studies, more often than not, run over a certain period of time. The treatment effect evolves during this period which provides crucial insights into the treatment response and the long-term effects. Many…

统计方法学 · 统计学 2020-04-13 Shu Li , Peter Bühlmann

Detecting anomalies is important for identifying inefficiencies, errors, or fraud in business processes. Traditional process mining approaches focus on analyzing 'flattened', sequential, event logs based on a single case notion. However,…

统计金融 · 定量金融 2024-03-05 Alessandro Niro , Michael Werner

Chronic pain is a global health challenge affecting millions of individuals, making it essential for physicians to have reliable and objective methods to measure the functional impact of clinical treatments. Traditionally used methods, like…

机器学习 · 计算机科学 2026-03-23 Yuanheng Mao , Lillian Yang , Stephen Yang , Ethan Shao , Zihan Li

Anomaly detection aims at identifying data points that show systematic deviations from the majority of data in an unlabeled dataset. A common assumption is that clean training data (free of anomalies) is available, which is often violated…

机器学习 · 计算机科学 2022-07-20 Chen Qiu , Aodong Li , Marius Kloft , Maja Rudolph , Stephan Mandt