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Often in real-world datasets, especially in high dimensional data, some feature values are missing. Since most data analysis and statistical methods do not handle gracefully missing values, the first step in the analysis requires the…

机器学习 · 统计学 2016-12-08 Yehezkel S. Resheff , Daphna Weinshall

Multi-agent systems powered by Large Language Models excel at complex tasks through coordinated collaboration, yet they face high failure rates in multi-turn deep search scenarios. Existing temporal attribution methods struggle to…

图形学 · 计算机科学 2025-12-23 Heng Zhang , Yuling Shi , Xiaodong Gu , Haochen You , Zijian Zhang , Lubin Gan , Yilei Yuan , Jin Huang

Fatigue detection for human operators plays a key role in safety critical applications such as aviation, mining, and long haul transport. While numerous studies have demonstrated the effectiveness of high fidelity sensors in controlled…

机器人学 · 计算机科学 2025-12-30 Luobin Cui , Yanlai Wu , Tang Ying , Weikai Li

In real-world recommendation scenarios, users typically engage with platforms through multiple types of behavioral interactions. Multi-behavior recommendation algorithms aim to leverage various auxiliary user behaviors to enhance prediction…

信息检索 · 计算机科学 2025-07-22 Hengyu Zhang , Chunxu Shen , Xiangguo Sun , Jie Tan , Yanchao Tan , Yu Rong , Hong Cheng , Lingling Yi

Heterogeneous graph neural networks aim to discover discriminative node embeddings and relations from multi-relational networks.One challenge of heterogeneous graph learning is the design of learnable meta-paths, which significantly…

机器学习 · 计算机科学 2023-04-19 Zhaoliang Chen , Zhihao Wu , Luying Zhong , Claudia Plant , Shiping Wang , Wenzhong Guo

The challenge of handling missing data is widespread in modern data analysis, particularly during the preprocessing phase and in various inferential modeling tasks. Although numerous algorithms exist for imputing missing data, the…

统计方法学 · 统计学 2024-03-28 Marcos Matabuena , Carla Díaz-Louzao , Rahul Ghosal , Francisco Gude

Recently, increasing attention has been paid to heterogeneous graph representation learning (HGRL), which aims to embed rich structural and semantic information in heterogeneous information networks (HINs) into low-dimensional node…

机器学习 · 计算机科学 2022-10-12 Zhiqiang Zhong , Cheng-Te Li , Jun Pang

Graph Neural Networks (GNNs) often assume strong homophily for graph classification, seldom considering heterophily, which means connected nodes tend to have different class labels and dissimilar features. In real-world scenarios, graphs…

机器学习 · 计算机科学 2024-05-10 Jiayi Yang , Sourav Medya , Wei Ye

Time series imputation is one of the most challenge problems and has broad applications in various fields like health care and the Internet of Things. Existing methods mainly aim to model the temporally latent dependencies and the…

机器学习 · 计算机科学 2025-05-13 Ruichu Cai , Kaitao Zheng , Junxian Huang , Zijian Li , Zhengming Chen , Boyan Xu , Zhifeng Hao

The potential impact of a paper is often quantified by how many citations it will receive. However, most commonly used models may underestimate the influence of newly published papers over time, and fail to encapsulate this dynamics of…

数字图书馆 · 计算机科学 2023-10-17 Guoxiu He , Zhikai Xue , Zhuoren Jiang , Yangyang Kang , Star Zhao , Wei Lu

Data scarcity hinders the usability of data-dependent algorithms when tackling IoT intrusion detection (IID). To address this, we utilise the data rich network intrusion detection (NID) domain to facilitate more accurate intrusion detection…

密码学与安全 · 计算机科学 2023-01-25 Jiashu Wu , Hao Dai , Yang Wang , Kejiang Ye , Chengzhong Xu

In real-world applications, we can encounter situations when a well-trained model has to be used to predict from a damaged dataset. The damage caused by missing or corrupted values can be either on the level of individual instances or on…

机器学习 · 计算机科学 2019-11-12 Magda Friedjungová , Daniel Vašata , Marcel Jiřina

Due to its complexity, graph learning-based multi-modal integration and classification is one of the most challenging obstacles for disease prediction. To effectively offset the negative impact between modalities in the process of…

机器学习 · 计算机科学 2025-02-14 Jin Liu , Junbin Mao , Hanhe Lin , Hulin Kuang , Shirui Pan , Xusheng Wu , Shan Xie , Fei Liu , Yi Pan

Wireless Sensor Networks (WSN) are the backbone of essential monitoring applications, but their deployment in unfavourable conditions increases the risk to data integrity and system reliability. Traditional fault detection methods often…

网络与互联网体系结构 · 计算机科学 2026-05-06 Nguyen Tri Nghia , Nguyen Van Son , Nguyen Thi Hanh

This study proposes a risk prediction method based on a Multi-Scale Temporal Alignment Network (MSTAN) to address the challenges of temporal irregularity, sampling interval differences, and multi-scale dynamic dependencies in Electronic…

机器学习 · 计算机科学 2025-11-27 Wei-Chen Chang , Lu Dai , Ting Xu

Graph neural networks (GNNs) have achieved remarkable success in node classification. Building on this progress, heterogeneous graph neural networks (HGNNs) integrate relation types and node and edge semantics to leverage heterogeneous…

机器学习 · 计算机科学 2025-10-08 Xiao Yang , Xuejiao Zhao , Zhiqi Shen

Multi-intent SLU can handle multiple intents in an utterance, which has attracted increasing attention. However, the state-of-the-art joint models heavily rely on autoregressive approaches, resulting in two issues: slow inference speed and…

计算与语言 · 计算机科学 2021-06-04 Libo Qin , Fuxuan Wei , Tianbao Xie , Xiao Xu , Wanxiang Che , Ting Liu

Object re-identification method is made up of backbone network, feature aggregation, and loss function. However, most backbone networks lack a special mechanism to handle rich scale variations and mine discriminative feature…

计算机视觉与模式识别 · 计算机科学 2022-11-11 Fei Shen , Mengwan Wei , Junchi Ren

Unsupervised anomaly detection in time series is essential in industrial applications, as it significantly reduces the need for manual intervention. Multivariate time series pose a complex challenge due to their feature and temporal…

机器学习 · 计算机科学 2024-08-26 Zhe Liu , Xiang Huang , Jingyun Zhang , Zhifeng Hao , Li Sun , Hao Peng

Heterogeneous information network (HIN) embedding aims to find the representations of nodes that preserve the proximity between entities of different nature. A family of approaches that are wildly adopted applies random walk to generate a…

机器学习 · 计算机科学 2022-02-15 Ling Zhan , Tao Jia