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Mechanistic statistical models are commonly used to study the flow of biological processes. For example, in landscape genetics, the aim is to infer spatial mechanisms that govern gene flow in populations. Existing statistical approaches in…

统计方法学 · 统计学 2024-06-04 Michael R Schwob , Mevin B Hooten , Vagheesh Narasimhan

Topological Data Analysis (TDA) is a rising field of computational topology in which the topological structure of a data set can be observed by persistent homology. By considering a sequence of sublevel sets, one obtains a filtration that…

统计方法学 · 统计学 2020-03-17 Yu-Min Chung , William Cruse , Austin Lawson

Time-series forecasting plays a critical role in many real-world applications. Although increasingly powerful models have been developed and achieved superior results on benchmark datasets, through a fine-grained sample-level inspection, we…

机器学习 · 计算机科学 2025-05-27 Zhining Liu , Ze Yang , Xiao Lin , Ruizhong Qiu , Tianxin Wei , Yada Zhu , Hendrik Hamann , Jingrui He , Hanghang Tong

The introduction of major innovations in industry requires a collaboration across the whole value chain. A common way to organize such a collaboration is the use of technology roadmaps, which act as an industry-wide long-term planning tool.…

软件工程 · 计算机科学 2021-09-27 Alexander Breckel , Jakob Pietron , Katharina Juhnke , Florian Sihler , Matthias Tichy

Continuous-time models such as Neural ODEs and Neural Flows have shown promising results in analyzing irregularly sampled time series frequently encountered in electronic health records. Based on these models, time series are typically…

机器学习 · 计算机科学 2024-02-14 Jingge Xiao , Leonie Basso , Wolfgang Nejdl , Niloy Ganguly , Sandipan Sikdar

Diffusion models are the mainstream approach for time series generation tasks. However, existing diffusion models for time series generation require retraining the entire framework to introduce specific conditional guidance. There also…

机器学习 · 计算机科学 2025-09-25 Mingchun Sun , Rongqiang Zhao , Hengrui Hu , Songyu Ding , Jie Liu

Diffusion models have emerged as powerful generative frameworks by progressively adding noise to data through a forward process and then reversing this process to generate realistic samples. While these models have achieved strong…

机器学习 · 计算机科学 2025-03-04 Xingzhuo Guo , Yu Zhang , Baixu Chen , Haoran Xu , Jianmin Wang , Mingsheng Long

Multivariate time series forecasting plays a pivotal role in contemporary web technologies. In contrast to conventional methods that involve creating dedicated models for specific time series application domains, this research advocates for…

机器学习 · 计算机科学 2024-02-26 Xu Liu , Junfeng Hu , Yuan Li , Shizhe Diao , Yuxuan Liang , Bryan Hooi , Roger Zimmermann

Deep neural network models have become ubiquitous in recent years, and have been applied to nearly all areas of science, engineering, and industry. These models are particularly useful for data that have strong dependencies in space (e.g.,…

机器学习 · 统计学 2022-06-07 Christopher K. Wikle , Andrew Zammit-Mangion

Data augmentation is an important facilitator of deep learning applications in the time series domain. A gap is identified in the literature, demonstrating sparse exploration of the transformer, the dominant sequence model, for data…

Spatial-temporal data modeling aims to mine the underlying spatial relationships and temporal dependencies of objects in a system. However, most existing methods focus on the modeling of spatial-temporal data in a single mode, lacking the…

机器学习 · 计算机科学 2023-08-23 Zihang Liu , Le Yu , Tongyu Zhu , Leiei Sun

We present a different approach to developing a concept of time for specifying temporality in the conceptual modeling of software and database systems. In the database field, various proposals and products address temporal data. The…

软件工程 · 计算机科学 2021-02-02 Sabah Al-Fedaghi

Time series data are foundational in finance, healthcare, and energy domains. However, most existing methods and datasets remain focused on a narrow spectrum of tasks, such as forecasting or anomaly detection. To bridge this gap, we…

计算与语言 · 计算机科学 2025-07-01 Yaxuan Kong , Yiyuan Yang , Yoontae Hwang , Wenjie Du , Stefan Zohren , Zhangyang Wang , Ming Jin , Qingsong Wen

Tabular data generation has recently attracted a growing interest due to its different application scenarios. However, generating time series of tabular data, where each element of the series depends on the others, remains a largely…

机器学习 · 计算机科学 2025-04-21 Fabrizio Garuti , Enver Sangineto , Simone Luetto , Lorenzo Forni , Rita Cucchiara

In modeling time series data, we often need to augment the existing data records to increase the modeling accuracy. In this work, we describe a number of techniques to extract dynamic information about the current state of a large…

机器学习 · 计算机科学 2022-05-20 Jeeyung Kim , Mengtian Jin , Youkow Homma , Alex Sim , Wilko Kroeger , Kesheng Wu

Time series forecasting is vital in many real-world applications, yet developing models that generalize well on unseen relevant domains -- such as forecasting web traffic data on new platforms/websites or estimating e-commerce demand in new…

机器学习 · 计算机科学 2024-12-17 Songgaojun Deng , Maarten de Rijke

Many areas of research are characterised by the deluge of large-scale highly-dimensional time-series data. However, using the data available for prediction and decision making is hampered by the current lag in our ability to uncover and…

人工智能 · 计算机科学 2020-11-24 Zina Ibrahim , Honghan Wu , Richard Dobson

Many real-world complex systems, such as epidemic spreading networks and ecosystems, can be modeled as networked dynamical systems that produce multivariate time series. Learning the intrinsic dynamics from observational data is pivotal for…

机器学习 · 计算机科学 2024-12-30 Yanna Ding , Zijie Huang , Malik Magdon-Ismail , Jianxi Gao

Time series (TS) modeling has come a long way from early statistical, mainly linear, approaches to the current trend in TS foundation models. With a lot of hype and industrial demand in this field, it is not always clear how much progress…

Time series similarity measures are highly relevant in a wide range of emerging applications including training machine learning models, classification, and predictive modeling. Standard similarity measures for time series most often…

机器学习 · 计算机科学 2021-01-22 Lucas Cassiel Jacaruso