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Although recent generative models can produce time series with close marginal distributions, they often face a fundamental tension between preserving global temporal structure and modeling stochastic local variations, particularly for…

机器学习 · 计算机科学 2026-03-23 Shaoshuai Du , Joze M. Rozanec , Andy Pimentel , Ana-Lucia Varbanescu

Log data are generated from logging statements in the source code, providing insights into the execution processes of software applications and systems. State-of-the-art log-based anomaly detection approaches typically leverage deep…

软件工程 · 计算机科学 2025-03-12 Xingfang Wu , Heng Li , Foutse Khomh

Time series analysis has proven to be a powerful method to characterize several phenomena in biology, neuroscience and economics, and to understand some of their underlying dynamical features. Despite a plethora of methods have been…

物理与社会 · 物理学 2023-03-01 Andrea Santoro , Federico Battiston , Giovanni Petri , Enrico Amico

Multivariate time series (MTS) have become increasingly common in healthcare domains where human vital signs and laboratory results are collected for predictive diagnosis. Recently, there have been increasing efforts to visualize healthcare…

机器学习 · 计算机科学 2017-08-29 Minh Nguyen , Sanjay Purushotham , Hien To , Cyrus Shahabi

Accurately predicting smartphone app usage is challenging due to the sparsity and irregularity of user behavior, especially under cold-start and low-activity conditions. Existing approaches mostly rely on static or attention-only…

机器学习 · 计算机科学 2025-09-30 Longlong Li , Cunquan Qu , Guanghui Wang

The majority of current Text-to-Speech (TTS) datasets, which are collections of individual utterances, contain few conversational aspects. In this paper, we introduce DailyTalk, a high-quality conversational speech dataset designed for…

音频与语音处理 · 电气工程与系统科学 2023-03-14 Keon Lee , Kyumin Park , Daeyoung Kim

Scaling text-to-speech (TTS) to large-scale, multi-speaker, and in-the-wild datasets is important to capture the diversity in human speech such as speaker identities, prosodies, and styles (e.g., singing). Current large TTS systems usually…

音频与语音处理 · 电气工程与系统科学 2023-05-31 Kai Shen , Zeqian Ju , Xu Tan , Yanqing Liu , Yichong Leng , Lei He , Tao Qin , Sheng Zhao , Jiang Bian

In the last years there has been a considerable increase in the availability of continuous sensor measurements in a wide range of application domains, such as Location-Based Services (LBS), medical monitoring systems, manufacturing plants…

数据库 · 计算机科学 2015-03-20 Michele Dallachiesa , Besmira Nushi , Katsiaryna Mirylenka , Themis Palpanas

Assessing marine ecosystems is important for understanding the impacts of climate change and human activity, as well as for maintaining healthy oceans and ecosystems. In marine science, it is common for biologists and geologists to identify…

统计方法学 · 统计学 2025-11-12 Yuichi Goto , Hiroko Kato Solvang , Masanobu Taniguchi , Tone Falkenhaug

Multi-modal large language models (MLLMs) have enabled numerous advances in understanding and reasoning in domains like vision, but we have not yet seen this broad success for time-series. Although prior works on time-series MLLMs have…

机器学习 · 计算机科学 2024-12-05 Winnie Chow , Lauren Gardiner , Haraldur T. Hallgrímsson , Maxwell A. Xu , Shirley You Ren

Real-world multivariate time series anomalies are rare and often unlabeled. Additionally, prevailing methods rely on increasingly complex architectures tuned to benchmarks, detecting only fragments of anomalous segments and overstating…

机器学习 · 计算机科学 2025-10-21 Dongchan Cho , Jiho Han , Keumyeong Kang , Minsang Kim , Honggyu Ryu , Namsoon Jung

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…

机器学习 · 计算机科学 2024-11-27 Shanghua Gao , Teddy Koker , Owen Queen , Thomas Hartvigsen , Theodoros Tsiligkaridis , Marinka Zitnik

The decomposition of time series into components is an important task that helps to understand time series and can enable better forecasting. Nowadays, with high sampling rates leading to high-frequency data (such as daily, hourly, or…

应用统计 · 统计学 2021-07-29 Kasun Bandara , Rob J Hyndman , Christoph Bergmeir

Large Language Models (LLMs) have seen significant use in domains such as natural language processing and computer vision. Going beyond text, image and graphics, LLMs present a significant potential for analysis of time series data,…

机器学习 · 计算机科学 2024-05-08 Xiyuan Zhang , Ranak Roy Chowdhury , Rajesh K. Gupta , Jingbo Shang

The use of deep learning techniques in detecting anomalies in time series data has been an active area of research with a long history of development and a variety of approaches. In particular, reconstruction-based unsupervised anomaly…

人工智能 · 计算机科学 2023-02-21 Jinsheng Yang , Yuanhai Shao , ChunNa Li

Big data present new opportunities for modern society while posing challenges for data scientists. Recent advancements in sensor networks and the widespread adoption of IoT have led to the collection of physical-sensor data on an enormous…

信息检索 · 计算机科学 2025-01-23 Zhipeng Ma , Bo Nørregaard Jørgensen , Zheng Grace Ma

Missing values are pervasive in large-scale time-series data, posing challenges for reliable analysis and decision-making. Many neural architectures have been designed to model and impute the complex and heterogeneous missingness patterns…

机器学习 · 计算机科学 2026-02-26 Joseph Arul Raj , Linglong Qian , Zina Ibrahim

5G and Beyond Networks become increasingly complex and heterogeneous, with diversified and high requirements from a wide variety of emerging applications. The complexity and diversity of Telecom networks place an increasing strain on…

机器学习 · 计算机科学 2023-11-27 R. Bourgerie , T. Zanouda

Time series analysis (TSA) is a longstanding research topic in the data mining community and has wide real-world significance. Compared to "richer" modalities such as language and vision, which have recently experienced explosive…

Prosody is essential for speech technology, shaping comprehension, naturalness, and expressiveness. However, current text-to-speech (TTS) systems still struggle to accurately capture human-like prosodic variation, in part because existing…

音频与语音处理 · 电气工程与系统科学 2025-11-05 Cedric Chan , Jianjing Kuang