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Conversational Recommender Systems (CRS) has become an emerging research topic seeking to perform recommendations through interactive conversations, which generally consist of generation and recommendation modules. Prior work on CRS tends…

计算与语言 · 计算机科学 2022-09-26 Lingzhi Wang , Shafiq Joty , Wei Gao , Xingshan Zeng , Kam-Fai Wong

Time series data with missing values is common across many domains. Healthcare presents special challenges due to prolonged periods of sensor disconnection. In such cases, having a confidence measure for imputed values is critical. Most…

机器学习 · 计算机科学 2025-07-15 Addison Weatherhead , Anna Goldenberg

Missing values are ubiquitous in multivariate time series (MTS) data, posing significant challenges for accurate analysis and downstream applications. In recent years, deep learning-based methods have successfully handled missing data by…

机器学习 · 计算机科学 2025-05-21 Jun Wang , Wenjie Du , Yiyuan Yang , Linglong Qian , Wei Cao , Keli Zhang , Wenjia Wang , Yuxuan Liang , Qingsong Wen

Time series datasets are often composed of a variety of sequences from the same domain, but from different entities, such as individuals, products, or organizations. We are interested in how time series models can be specialized to…

机器学习 · 计算机科学 2022-10-11 Alex Bird , Christopher K. I. Williams , Christopher Hawthorne

Recently, evolving networks are becoming a suitable form to model many real-world complex systems, due to their peculiarities to represent the systems and their constituting entities, the interactions between the entities and the…

人工智能 · 计算机科学 2017-09-21 Angelo Impedovo , Corrado Loglisci , Michelangelo Ceci

Time series data are ubiquitous nowadays. Whereas most of the literature on the topic deals with real-valued time series, categorical time series have received much less attention. However, the development of data mining techniques for this…

机器学习 · 统计学 2023-04-26 Ángel López Oriona , José Antonio Vilar Fernández

Big time series are increasingly available from an ever wider range of IoT-enabled sensors deployed in various environments. Significant insights can be gained by mining temporal patterns from these time series. Temporal pattern mining…

数据库 · 计算机科学 2023-06-21 Van Long Ho , Nguyen Ho , Torben Bach Pedersen , Panagiotis Papapetrou

A highly comparative, feature-based approach to time series classification is introduced that uses an extensive database of algorithms to extract thousands of interpretable features from time series. These features are derived from across…

机器学习 · 计算机科学 2017-11-10 Ben D. Fulcher , Nick S. Jones

Causal discovery from time series is a fundamental task in machine learning. However, its widespread adoption is hindered by a reliance on untestable causal assumptions and by the lack of robustness-oriented evaluation in existing…

机器学习 · 计算机科学 2026-05-01 Huiyang Yi , Xiaojian Shen , Yonggang Wu , Duxin Chen , He Wang , Wenwu Yu

Secondary analysis or the reuse of existing survey data is a common practice among social scientists. Searching for relevant datasets in Digital Libraries is a somehow unfamiliar behaviour for this community. Dataset retrieval, especially…

数字图书馆 · 计算机科学 2020-10-13 Zeljko Carevic , Dwaipayan Roy , Philipp Mayr

Practical machine learning applications involving time series data, such as firewall log analysis to proactively detect anomalous behavior, are concerned with real time analysis of streaming data. Consequently, we need to update the ML…

Large volumes of spatio-temporal data are increasingly collected and studied in diverse domains including, climate science, social sciences, neuroscience, epidemiology, transportation, mobile health, and Earth sciences. Spatio-temporal data…

机器学习 · 计算机科学 2017-11-20 Gowtham Atluri , Anuj Karpatne , Vipin Kumar

Understanding and distinguishing temporal patterns in time series data is essential for scientific discovery and decision-making. For example, in biomedical research, uncovering meaningful patterns in physiological signals can improve…

机器学习 · 计算机科学 2025-12-16 Yu-Chia Huang , Juntong Chen , Dongyu Liu , Kwan-Liu Ma

In the training process of Deep Reinforcement Learning (DRL), agents require repetitive interactions with the environment. With an increase in training volume and model complexity, it is still a challenging problem to enhance data…

机器学习 · 计算机科学 2024-05-15 Jingwen Wang , Dehui Du , Yida Li , Yiyang Li , Yikang Chen

In recent years, spatio-temporal graph neural networks (GNNs) have attracted considerable interest in the field of time series analysis, due to their ability to capture, at once, dependencies among variables and across time points. The…

机器学习 · 计算机科学 2025-12-01 Flavio Corradini , Flavio Gerosa , Marco Gori , Carlo Lucheroni , Marco Piangerelli , Martina Zannotti

In the last decade neural network have made huge impact both in industry and research due to their ability to extract meaningful features from imprecise or complex data, and by achieving super human performance in several domains. However,…

人工智能 · 计算机科学 2022-02-09 Dominique Mercier , Jwalin Bhatt , Andreas Dengel , Sheraz Ahmed

Cross-modal (e.g. image-text, video-text) retrieval is an important task in information retrieval and multimodal vision-language understanding field. Temporal understanding makes video-text retrieval more challenging than image-text…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Yang Du , Yuqi Liu , Qin Jin

Time-series data is being increasingly collected and stud- ied in several areas such as neuroscience, climate science, transportation, and social media. Discovery of complex patterns of relationships between individual time-series, using…

Univariate time series (UTS), where each timestamp records a single variable, serve as crucial indicators in web systems and cloud servers. Anomaly detection in UTS plays an essential role in both data mining and system reliability…

机器学习 · 计算机科学 2026-02-11 Lingpei Zhang , Qingming Li , Yong Yang , Jiahao Chen , Rui Zeng , Chenyang Lyu , Shouling Ji

Now a days, data mining and knowledge discovery methods are applied to a variety of enterprise and engineering disciplines to uncover interesting patterns from databases. The study of Sequential patterns is an important data mining problem…

数据库 · 计算机科学 2009-06-24 Jigyasa Bisaria , Namita Shrivastava , K. R. Pardasani
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