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Why does a phenomenon occur? Addressing this question is central to most scientific inquiries and often relies on simulations of scientific models. As models become more intricate, deciphering the causes behind phenomena in high-dimensional…

机器学习 · 统计学 2024-06-04 Armin Kekić , Bernhard Schölkopf , Michel Besserve

Accurate and explainable health event predictions are becoming crucial for healthcare providers to develop care plans for patients. The availability of electronic health records (EHR) has enabled machine learning advances in providing these…

机器学习 · 计算机科学 2021-05-18 Chang Lu , Chandan K. Reddy , Prithwish Chakraborty , Samantha Kleinberg , Yue Ning

Medical activities, such as diagnoses, medicine treatments, and laboratory tests, as well as temporal relations between these activities are the basic concepts in clinical research. However, existing relational data model on electronic…

计算机与社会 · 计算机科学 2018-12-27 Xuli Liu , Jihao Jin , Qi Wang , Tong Ruan , Yangming Zhou , Daqi Gao , Yichao Yin

In recent years a huge interdisciplinary field has emerged which is devoted to the complex dynamics of anomalous transport with long-time memory and non-markovian features. It was found that the framework of fractional calculus and its…

概率论 · 数学 2022-04-27 Thomas M. Michelitsch , Federico Polito , Alejandro P. Riascos

Following AI scaling trends, frontier models continue to grow in size and continue to be trained on larger datasets. Training these models requires huge investments in exascale computational resources, which has in turn driven developtment…

Temporal point process as the stochastic process on continuous domain of time is commonly used to model the asynchronous event sequence featuring with occurrence timestamps. Thanks to the strong expressivity of deep neural networks, they…

机器学习 · 计算机科学 2024-12-25 Haitao Lin , Cheng Tan , Lirong Wu , Zhangyang Gao , Zicheng Liu , Stan. Z. Li

Probabilistic Structured Queries (PSQ) is a cross-language information retrieval (CLIR) method that uses translation probabilities statistically derived from aligned corpora. PSQ is a strong baseline for efficient CLIR using sparse…

信息检索 · 计算机科学 2024-04-30 Eugene Yang , Suraj Nair , Dawn Lawrie , James Mayfield , Douglas W. Oard , Kevin Duh

Clinical outcome prediction based on the Electronic Health Record (EHR) plays a crucial role in improving the quality of healthcare. Conventional deep sequential models fail to capture the rich temporal patterns encoded in the longand…

机器学习 · 计算机科学 2019-08-27 Luchen Liu , Haoran Li , Zhiting Hu , Haoran Shi , Zichang Wang , Jian Tang , Ming Zhang

Temporal information is increasingly available as part of large network data sets. This information reveals sequences of link activations between network entities, which can expose underlying processes in the data. Examples include the…

社会与信息网络 · 计算机科学 2016-05-10 Ursula Redmond , Pádraig Cunningham

Posterior sampling allows exploitation of prior knowledge on the environment's transition dynamics to improve the sample efficiency of reinforcement learning. The prior is typically specified as a class of parametric distributions, the…

机器学习 · 计算机科学 2024-04-09 Mirco Mutti , Riccardo De Santi , Marcello Restelli , Alexander Marx , Giorgia Ramponi

Many diverse phenomena in nature often inherently encode both short- and long-term temporal dependencies, which especially result from the direction of the flow of time. In this respect, we discovered experimental evidence suggesting that…

人工智能 · 计算机科学 2025-02-11 Kyung Geun Kim , Byeong Tak Lee

Models that capture the spatial and temporal dynamics are applicable in many science fields. Non-separable spatio-temporal models were introduced in the literature to capture these features. However, these models are generally complicated…

统计方法学 · 统计学 2020-05-13 Douglas R. M. Azevedo , Marcos O. Prates , Michael R. Willig

In this article, we propose a novel model for time series of counts called the hysteretic Poisson autoregressive (HPART) model with thresholds by extending the linear Poisson autoregressive model into a nonlinear model. Unlike other…

统计方法学 · 统计学 2025-09-22 Xintong Ma , Dong Li , Howell Tong

The challenge of quantifying uncertainty propagation in real-world systems is rooted in the high-dimensionality of the stochastic input and the frequent lack of explicit knowledge of its probability distribution. Traditional approaches show…

数值分析 · 数学 2019-05-01 Huan Lei , Jing Li , Peiyuan Gao , Panos Stinis , Nathan Baker

This study proposes a risk prediction method based on a Multi-Scale Temporal Alignment Network (MSTAN) to address the challenges of temporal irregularity, sampling interval differences, and multi-scale dynamic dependencies in Electronic…

机器学习 · 计算机科学 2025-11-27 Wei-Chen Chang , Lu Dai , Ting Xu

Temporal Knowledge Graph (TKG) is an extension of traditional Knowledge Graph (KG) that incorporates the dimension of time. Reasoning on TKGs is a crucial task that aims to predict future facts based on historical occurrences. The key…

人工智能 · 计算机科学 2024-01-26 Hao Dong , Pengyang Wang , Meng Xiao , Zhiyuan Ning , Pengfei Wang , Yuanchun Zhou

Three-way data structures, characterized by three entities, the units, the variables and the occasions, are frequent in biological studies. In RNA sequencing, three-way data structures are obtained when high-throughput transcriptome…

统计方法学 · 统计学 2022-06-22 Anjali Silva , Steven J. Rothstein , Paul D. McNicholas , Xiaoke Qin , Sanjeena Subedi

This paper describes a compound Poisson-based random effects structure for modeling zero-inflated data. Data with large proportion of zeros are found in many fields of applied statistics, for example in ecology when trying to model and…

应用统计 · 统计学 2009-07-29 Marie-Pierre Etienne , Eric Parent , Benoit Hugues , Bernier Jacques

A commonly-used paradigm to estimate changes in the frequency of past events or the size of populations is to consider the occurrence rate of archaeological/environmental samples found at a site over time. The reliability of such a…

统计方法学 · 统计学 2025-05-01 Timothy J Heaton , Sara Al-assam , Edouard Bard

Recently, symbolic regression (SR) has demonstrated its efficiency for discovering basic governing relations in physical systems. A major impact can be potentially achieved by coupling symbolic regression with asymptotic methodology. The…

符号计算 · 计算机科学 2023-07-06 Rasul Abdusalamov , Julius Kaplunov , Mikhail Itskov