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With the rapid development of Internet technology, online social networks (OSNs) have got fast development and become increasingly popular. Meanwhile, the research works across multiple social networks attract more and more attention from…

社会与信息网络 · 计算机科学 2020-03-09 Ziqing Zhu , Tao Zhou , Chenghao Jia , Weijia Liu , Jiuxin Cao

Community detection is a fundamental problem in network analysis which is made more challenging by overlaps between communities which often occur in practice. Here we propose a general, flexible, and interpretable generative model for…

机器学习 · 统计学 2015-03-16 Yuan Zhang , Elizaveta Levina , Ji Zhu

A traditional and intuitively appealing Multi-Task Multiple Kernel Learning (MT-MKL) method is to optimize the sum (thus, the average) of objective functions with (partially) shared kernel function, which allows information sharing amongst…

机器学习 · 计算机科学 2014-04-14 Cong Li , Michael Georgiopoulos , Georgios C. Anagnostopoulos

Multi-task learning (MTL) is a powerful approach in deep learning that leverages the information from multiple tasks during training to improve model performance. In medical imaging, MTL has shown great potential to solve various tasks.…

计算机视觉与模式识别 · 计算机科学 2023-09-08 Sangwook Kim , Thomas G. Purdie , Chris McIntosh

Network intrusion detection is one of the most important issues in the field of cyber security, and various machine learning techniques have been applied to build intrusion detection systems. However, since the number of features to…

机器学习 · 计算机科学 2024-06-14 Zi-Hang Cheng , Haopu Shang , Chao Qian

To efficiently select optimal dataset combinations for enhancing multi-task learning (MTL) performance in large language models, we proposed a novel framework that leverages a neural network to predict the best dataset combinations. The…

计算与语言 · 计算机科学 2025-05-06 Zaifu Zhan , Rui Zhang

Progress in machine learning (ML) stems from a combination of data availability, computational resources, and an appropriate encoding of inductive biases. Useful biases often exploit symmetries in the prediction problem, such as…

机器学习 · 计算机科学 2021-12-08 Ferran Alet , Dylan Doblar , Allan Zhou , Joshua Tenenbaum , Kenji Kawaguchi , Chelsea Finn

Overlapping Community Search (OCS) identifies nodes that interact with multiple communities based on a specified query. Existing community search approaches fall into two categories: algorithm-based models and Machine Learning-based (ML)…

社会与信息网络 · 计算机科学 2025-01-10 Qing Sima , Jianke Yu , Xiaoyang Wang , Wenjie Zhang , Ying Zhang , Xuemin Lin

A common data mining task on networks is community detection, which seeks an unsupervised decomposition of a network into structural groups based on statistical regularities in the network's connectivity. Although many methods exist, the No…

机器学习 · 统计学 2020-08-10 Amir Ghasemian , Homa Hosseinmardi , Aaron Clauset

Out-of-distribution (OOD) detection is crucial for the safe deployment of neural networks. Existing CLIP-based approaches perform OOD detection by devising novel scoring functions or sophisticated fine-tuning methods. In this work, we…

计算与语言 · 计算机科学 2024-11-06 Yixia Li , Boya Xiong , Guanhua Chen , Yun Chen

Community detection in a complex network is an important problem of much interest in recent years. In general, a community detection algorithm chooses an objective function and captures the communities of the network by optimizing the…

社会与信息网络 · 计算机科学 2015-08-27 Suman Saha , Satya P. Ghrera

This paper considers the problem of algorithm selection for community detection. The aim of community detection is to identify sets of nodes in a network which are more interconnected relative to their connectivity to the rest of the…

社会与信息网络 · 计算机科学 2010-10-27 Leto Peel

Identifying overlapping communities in networks is a challenging task. In this work we present a novel approach to community detection that utilises the Bayesian non-negative matrix factorisation (NMF) model to produce a probabilistic…

机器学习 · 统计学 2010-09-28 Ioannis Psorakis , Stephen Roberts , Ben Sheldon

In social networks, the discovery of community structures has received considerable attention as a fundamental problem in various network analysis tasks. However, due to privacy concerns or access restrictions, the network structure is…

社会与信息网络 · 计算机科学 2025-05-07 Yu Hou , Cong Tran , Ming Li , Won-Yong Shin

Detecting groups of users, who have similar opinions, interests, or social behavior, has become an important task for many applications. A recent study showed that dynamic distance based Attractor, a community detection algorithm,…

分布式、并行与集群计算 · 计算机科学 2018-06-26 Nguyen Vo , Kyumin Lee , Thanh Tran

Community detection refers to the task of discovering closely related subgraphs to understand the networks. However, traditional community detection algorithms fail to pinpoint a particular kind of community. This limits its applicability…

社会与信息网络 · 计算机科学 2022-10-18 Xixi Wu , Yun Xiong , Yao Zhang , Yizhu Jiao , Caihua Shan , Yiheng Sun , Yangyong Zhu , Philip S. Yu

Dynamic community detection is crucial for elucidating the temporal evolution of social structures, information dissemination, and interactive behaviors within complex networks. Nonnegative matrix factorization provides an efficient…

社会与信息网络 · 计算机科学 2024-07-29 Hao Fang , Qu Wang , Qicong Hu , Hao Wu

Community structure is of paramount importance for the understanding of complex networks. Consequently, there is a tremendous effort in order to develop efficient community detection algorithms. Unfortunately, the issue of a fair assessment…

社会与信息网络 · 计算机科学 2017-11-28 Jebabli Malek , Cherifi Hocine , Cherifi Chantal , Hamouda Atef

Object detection performance, as measured on the canonical PASCAL VOC dataset, has plateaued in the last few years. The best-performing methods are complex ensemble systems that typically combine multiple low-level image features with…

计算机视觉与模式识别 · 计算机科学 2014-10-23 Ross Girshick , Jeff Donahue , Trevor Darrell , Jitendra Malik

In this paper, we first propose a graph neural network encoding method for multiobjective evolutionary algorithm to handle the community detection problem in complex attribute networks. In the graph neural network encoding method, each edge…

神经与进化计算 · 计算机科学 2021-01-06 Jianyong Sun , Wei Zheng , Qingfu Zhang , Zongben Xu