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Benchmark quality is critical for meaningful evaluation and sustained progress in time series forecasting, particularly with the rise of pretrained models. Existing benchmarks often have limited domain coverage or overlook real-world…

We introduce TFRBench, the first benchmark designed to evaluate the reasoning capabilities of forecasting systems. Traditionally, time-series forecasting has been evaluated solely on numerical accuracy, treating foundation models as ``black…

Artificial Intelligence · Computer Science 2026-04-08 Md Atik Ahamed , Mihir Parmar , Palash Goyal , Yiwen Song , Long T. Le , Qiang Cheng , Chun-Liang Li , Hamid Palangi , Jinsung Yoon , Tomas Pfister

Foundation models have transformed natural language processing and computer vision, and a rapidly growing literature on time-series foundation models (TSFMs) seeks to replicate this success in forecasting. While recent open-source models…

Text-to-video (T2V) generation models have made significant progress in creating visually appealing videos. However, they struggle with generating coherent sequential narratives that require logical progression through multiple events.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-16 Zhengxu Tang , Zizheng Wang , Luning Wang , Zitao Shuai , Chenhao Zhang , Siyu Qian , Yirui Wu , Bohao Wang , Haosong Rao , Zhenyu Yang , Chenwei Wu

Diffusion models have shown great promise in data generation, yet generating time series data remains challenging due to the need to capture complex temporal dependencies and structural patterns. In this paper, we present \textit{TSGDiff},…

Machine Learning · Computer Science 2025-11-18 Lifeng Shen , Xuyang Li , Lele Long

Financial time series forecasting presents significant challenges due to complex nonlinear relationships, temporal dependencies, variable interdependencies and limited data availability, particularly for tasks involving low-frequency data,…

General Finance · Quantitative Finance 2025-07-11 Ben A. Marconi

Time series forecasting is a subject of significant scientific and industrial importance. Despite the widespread utilization of forecasting methods, there is a dearth of research aimed at comprehending the conditions under which these…

Machine Learning · Computer Science 2024-10-23 Moisés Santos , André de Carvalho , Carlos Soares

Time series forecasting (TSF) remains a challenging problem due to the intricate entanglement of intraperiod-fluctuations and interperiod-trends. While recent advances have attempted to reshape 1D sequences into 2D period-phase…

Machine Learning · Computer Science 2026-03-04 Yixin Wang , Yifan Hu , Peiyuan Liu , Naiqi Li , Dai Tao , Shu-Tao Xia

Time complexity is a theoretic measure to determine the amount of time the algorithm needs for its execution. In reality, developers write algorithms into code snippets within limited resources, making the calculation of a code's time…

Software Engineering · Computer Science 2025-03-24 Joonghyuk Hahn , Hyeseon Ahn , Jungin Kim , Soohan Lim , Yo-Sub Han

Time Series Classification (TSC) has received much attention in the past two decades and is still a crucial and challenging problem in data science and knowledge engineering. Indeed, along with the increasing availability of time series…

Machine Learning · Computer Science 2023-08-14 Aurélien Renault , Alexis Bondu , Vincent Lemaire , Dominique Gay

Training certifiably robust neural networks is an important but challenging task. While many algorithms for (deterministic) certified training have been proposed, they are often evaluated on different training schedules, certification…

Machine Learning · Computer Science 2025-05-29 Yuhao Mao , Stefan Balauca , Martin Vechev

Time series analysis is crucial for understanding dynamics of complex systems. Recent advances in foundation models have led to task-agnostic Time Series Foundation Models (TSFMs) and Large Language Model-based Time Series Models (TSLLMs),…

Machine Learning · Computer Science 2025-03-17 Xu Liu , Taha Aksu , Juncheng Liu , Qingsong Wen , Yuxuan Liang , Caiming Xiong , Silvio Savarese , Doyen Sahoo , Junnan Li , Chenghao Liu

Human Activity Recognition using wearable inertial sensors is foundational to healthcare monitoring, fitness analytics, and context-aware computing, yet its deployment is hindered by cross-user variability arising from heterogeneous…

Machine Learning · Computer Science 2026-03-18 Xiaozhou Ye , Feng Jiang , Zihan Wang , Xiulai Wang , Yutao Zhang , Kevin I-Kai Wang

Time series foundation models (TSFMs) have recently gained significant attention due to their strong zero-shot capabilities and widespread real-world applications. Such models typically require a computationally costly pre-training on…

Time-series forecasting is a critical task across many domains, from engineering to economics, where accurate predictions drive strategic decisions. However, applying advanced deep learning models in challenging, volatile domains like…

Machine Learning · Computer Science 2026-02-23 Andrzej Podobiński , Jarosław A. Chudziak

Multivariate Time Series Classification (MTSC) enables the analysis if complex temporal data, and thus serves as a cornerstone in various real-world applications, ranging from healthcare to finance. Since the relationship among variables in…

Machine Learning · Computer Science 2025-01-20 Wennuo Yang , Shiling Wu , Yuzhi Zhou , Cheng Luo , Xilin He , Weicheng Xie , Linlin Shen , Siyang Song

Differentially private (DP) synthetic data generation is a promising technique for utilizing private datasets that otherwise cannot be exposed for model training or other analytics. While much research literature has focused on generating…

Computation and Language · Computer Science 2025-09-16 Shuaiqi Wang , Vikas Raunak , Arturs Backurs , Victor Reis , Pei Zhou , Sihao Chen , Longqi Yang , Zinan Lin , Sergey Yekhanin , Giulia Fanti

Time series are ubiquitous in real-world scenarios and crucial for applications ranging from energy management to traffic control. Consequently, the ability to reason over time series is a fundamental skill for generalist models to solve…

Artificial Intelligence · Computer Science 2026-05-11 Fangxu Yu , Xingang Guo , Lingzhi Yuan , Haoqiang Kang , Hongyu Zhao , Lianhui Qin , Furong Huang , Bin Hu , Tianyi Zhou

Anomaly detection in multivariate time series is essential across domains such as healthcare, cybersecurity, and industrial monitoring, yet remains fundamentally challenging due to high-dimensional dependencies, the presence of…

Machine Learning · Computer Science 2026-02-10 Xiaona Zhou , Constantin Brif , Ismini Lourentzou

Reliable evaluation of anomaly detection methods in multivariate time series remains an open challenge, largely due to the limitations of existing benchmark datasets. Current resources often lack fine-grained anomaly annotations, do not…

Artificial Intelligence · Computer Science 2026-04-17 Pierre Lotte , André Péninou , Olivier Teste