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Precipitation nowcasting aims to forecast short-term radar echo sequences for extreme weather warning, where both prediction fidelity and inference efficiency are critical for real-world deployment. However, diffusion-based models, despite…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Yufeng Zhu , Chunlei Shi , Yongchao Feng , Dan Niu

Time Series Foundation Models (TSFMs) have borrowed the long context paradigm from natural language processing under the premise that feeding more history into the model improves forecast quality. But in stochastic domains, distant history…

Machine Learning · Computer Science 2026-05-12 Rishi Ahuja , Kumar Prateek , Simranjit Singh , Vijay Kumar

Multimodal motion forecasting is inherently under-supervised: each training scene provides only one realized future, yet multiple plausible futures exist. This sparse supervision often leads to mode collapse (redundant hypotheses and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Zikang Zhou , Haibo Hu , Xinhong Chen , Yifan Zhang , Nan Guan , Yung-Hui Li , Chun Jason Xue , Jianping Wang

Predicting future values in multivariate time series is vital across various domains. This work explores the use of large language models (LLMs) for this task. However, LLMs typically handle one-dimensional data. We introduce MultiCast, a…

Machine Learning · Computer Science 2024-05-24 Georgios Chatzigeorgakidis , Konstantinos Lentzos , Dimitrios Skoutas

Spatio-temporal forecasting is crucial in transportation, logistics, and supply chain management. However, current methods struggle with large, complex datasets. We propose a dynamic, multi-modal approach that integrates the strengths of…

Machine Learning · Computer Science 2024-08-27 Sagar Srinivas Sakhinana , Geethan Sannidhi , Chidaksh Ravuru , Venkataramana Runkana

Flow Matching (FM) has recently emerged as a powerful approach for high-quality visual generation. However, their prohibitively slow inference due to a large number of denoising steps limits their potential use in real-time or interactive…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Divya Jyoti Bajpai , Shubham Agarwal , Apoorv Saxena , Kuldeep Kulkarni , Subrata Mitra , Manjesh Kumar Hanawal

Time series foundation models are pre-trained on large datasets and are able to achieve state-of-the-art performance in diverse tasks. However, to date, there has been limited work demonstrating how well these models perform in medical…

Machine Learning · Computer Science 2024-11-21 Mingzhu Liu , Angela H. Chen , George H. Chen

Precipitation nowcasting remains challenging due to the highly localized, rapidly evolving, and heterogeneous nature of atmospheric dynamics. Although recent methods increasingly adopt attention-based architectures in both unimodal and…

Machine Learning · Computer Science 2026-05-14 Penghui Wen , Zexin Hu , Sen Zhang , Patrick Filippi , Xiaogang Zhu , Allen Benter , Thomas Bishop , Zhiyong Wang , Kun Hu

Despite the recent advances in unified image segmentation (IS), developing a unified video segmentation (VS) model remains a challenge. This is mainly because generic category-specified VS tasks need to detect all objects and track them…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Minghan Li , Shuai Li , Xindong Zhang , Lei Zhang

Although pre-trained transformers and reprogrammed text-based LLMs have shown strong performance on time series tasks, the best-performing architectures vary widely across tasks, with most models narrowly focused on specific areas, such as…

Machine Learning · Computer Science 2024-11-27 Shanghua Gao , Teddy Koker , Owen Queen , Thomas Hartvigsen , Theodoros Tsiligkaridis , Marinka Zitnik

The ubiquity of dynamic data in domains such as weather, healthcare, and energy underscores a growing need for effective interpretation and retrieval of time-series data. These data are inherently tied to domain-specific contexts, such as…

Machine Learning · Computer Science 2026-02-03 Jialin Chen , Ziyu Zhao , Gaukhar Nurbek , Aosong Feng , Ali Maatouk , Leandros Tassiulas , Yifeng Gao , Rex Ying

Bases have become an integral part of modern deep learning-based models for time series forecasting due to their ability to act as feature extractors or future references. To be effective, a basis must be tailored to the specific set of…

Machine Learning · Computer Science 2024-01-19 Zelin Ni , Hang Yu , Shizhan Liu , Jianguo Li , Weiyao Lin

The utilization of discrete speech tokens, divided into semantic tokens and acoustic tokens, has been proven superior to traditional acoustic feature mel-spectrograms in terms of naturalness and robustness for text-to-speech (TTS)…

Sound · Computer Science 2024-03-29 Chenpeng Du , Yiwei Guo , Feiyu Shen , Zhijun Liu , Zheng Liang , Xie Chen , Shuai Wang , Hui Zhang , Kai Yu

Recent advancements in personalized speech generation have brought synthetic speech increasingly close to the realism of target speakers' recordings, yet multimodal speaker generation remains on the rise. This paper introduces UniSpeaker, a…

Sound · Computer Science 2025-01-14 Zhengyan Sheng , Zhihao Du , Heng Lu , Shiliang Zhang , Zhen-Hua Ling

Real-world time series often exhibit complex interdependencies that cannot be captured in isolation. Global models that model past data from multiple related time series globally while producing series-specific forecasts locally are now…

Machine Learning · Computer Science 2024-05-14 Abishek Sriramulu , Christoph Bergmeir , Slawek Smyl

Accurate time-series forecasting is crucial in various scientific and industrial domains, yet deep learning models often struggle to capture long-term dependencies and adapt to data distribution shifts over time. We introduce Future-Guided…

Machine Learning · Computer Science 2025-09-30 Skye Gunasekaran , Assel Kembay , Hugo Ladret , Rui-Jie Zhu , Laurent Perrinet , Omid Kavehei , Jason Eshraghian

Current vision-language models have been explored for multi-modal embedding tasks like information retrieval. However, they face significant challenges in real-world queries and targets involving diverse modality combinations, as existing…

Computer Vision and Pattern Recognition · Computer Science 2026-05-07 Jiajun Qin , Yuan Pu , Zhuolun He , Seunggeun Kim , David Z. Pan , Bei Yu

Recent Transformer-based large language models (LLMs) demonstrate in-context learning ability to perform various functions based solely on the provided context, without updating model parameters. To fully utilize the in-context capabilities…

Machine Learning · Computer Science 2026-02-06 Jiecheng Lu , Yan Sun , Shihao Yang

Among the existing Transformer-based multivariate time series forecasting methods, iTransformer, which treats each variable sequence as a token and only explicitly extracts cross-variable dependencies, and PatchTST, which adopts a…

Machine Learning · Computer Science 2025-01-08 Liyang Qin , Xiaoli Wang , Chunhua Yang , Huaiwen Zou , Haochuan Zhang

Providing long-range forecasts is a fundamental challenge in time series modeling, which is only compounded by the challenge of having to form such forecasts when a time series has never previously been observed. The latter challenge is the…

Machine Learning · Statistics 2018-08-28 Christopher Xie , Alex Tank , Alec Greaves-Tunnell , Emily Fox