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Community detection and hierarchy extraction are usually thought of as separate inference tasks on networks. Considering only one of the two when studying real-world data can be an oversimplification. In this work, we present a generative…

社会与信息网络 · 计算机科学 2022-06-03 Laura Iacovissi , Caterina De Bacco

Empirical data on real complex systems are becoming increasingly available. Parallel to this is the need for new methods of reconstructing (inferring) the topology of networks from time-resolved observations of their node-dynamics. The…

动力系统 · 数学 2019-09-16 Marc G. Leguia , Zoran Levnajic , Ljupco Todorovski , Bernard Zenko

Federated Learning faces significant challenges in statistical and system heterogeneity, along with high energy consumption, necessitating efficient client selection strategies. Traditional approaches, including heuristic and learning-based…

机器学习 · 计算机科学 2025-10-01 Zhiyuan Ning , Chunlin Tian , Meng Xiao , Wei Fan , Pengyang Wang , Li Li , Pengfei Wang , Yuanchun Zhou

A generative modeling framework is proposed that combines diffusion models and manifold learning to efficiently sample data densities on manifolds. The approach utilizes Diffusion Maps to uncover possible low-dimensional underlying (latent)…

机器学习 · 计算机科学 2025-04-22 Dimitris G. Giovanis , Ellis Crabtree , Roger G. Ghanem , Ioannis G. Kevrekidis

Network topology inference is a cornerstone problem in statistical analyses of complex systems. In this context, the fresh look advocated here permeates benefits from convex optimization and graph signal processing, to identify the…

社会与信息网络 · 计算机科学 2016-04-12 Santiago Segarra , Antonio G. Marques , Gonzalo Mateos , Alejandro Ribeiro

In recent years the importance of finding a meaningful pattern from huge datasets has become more challenging. Data miners try to adopt innovative methods to face this problem by applying feature selection methods. In this paper we propose…

机器学习 · 计算机科学 2014-03-11 Mehdi Naseriparsa , Amir-masoud Bidgoli , Touraj Varaee

The redundant features existing in high dimensional datasets always affect the performance of learning and mining algorithms. How to detect and remove them is an important research topic in machine learning and data mining research. In this…

机器学习 · 计算机科学 2017-07-04 Shuchu Han , Hao Huang , Hong Qin

Extracting appropriate features to represent a corpus is an important task for textual mining. Previous attention based work usually enhance feature at the lexical level, which lacks the exploration of feature augmentation at the sentence…

计算与语言 · 计算机科学 2018-12-14 Longxuan Ma , Pengfei Wang , Lei Zhang

Humans are capable of learning new tasks without forgetting previous ones, while neural networks fail due to catastrophic forgetting between new and previously-learned tasks. We consider a class-incremental setting which means that the…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Xialei Liu , Chenshen Wu , Mikel Menta , Luis Herranz , Bogdan Raducanu , Andrew D. Bagdanov , Shangling Jui , Joost van de Weijer

Deep models are designed to operate on huge volumes of high dimensional data such as images. In order to reduce the volume of data these models must process, we propose a set-based two-stage end-to-end neural subsampling model that is…

机器学习 · 计算机科学 2022-05-31 Bruno Andreis , Seanie Lee , A. Tuan Nguyen , Juho Lee , Eunho Yang , Sung Ju Hwang

In this paper, we present a novel feature extraction procedure to predict interval-valued time series by combing transfer learning and imaging approaches. Initially, we represent interval-valued time series using a bivariate point-valued…

应用统计 · 统计学 2025-04-07 Wan Tian , Zhongfeng Qin , Tao Hu

Convolutional neural networks are the most successful models in single image super-resolution. Deeper networks, residual connections, and attention mechanisms have further improved their performance. However, these strategies often improve…

图像与视频处理 · 电气工程与系统科学 2020-12-09 Parichehr Behjati , Pau Rodriguez , Armin Mehri , Isabelle Hupont , Carles Fernández Tena , Jordi Gonzalez

Inferring missing links or detecting spurious ones based on observed graphs, known as link prediction, is a long-standing challenge in graph data analysis. With the recent advances in deep learning, graph neural networks have been used for…

社会与信息网络 · 计算机科学 2023-01-03 Xingping Xian , Tao Wu , Xiaoke Ma , Shaojie Qiao , Yabin Shao , Chao Wang , Lin Yuan , Yu Wu

We explore efficient neural architecture search methods and show that a simple yet powerful evolutionary algorithm can discover new architectures with excellent performance. Our approach combines a novel hierarchical genetic representation…

机器学习 · 计算机科学 2018-02-26 Hanxiao Liu , Karen Simonyan , Oriol Vinyals , Chrisantha Fernando , Koray Kavukcuoglu

A new method of feature extraction in the social network for within-network classification is proposed in the paper. The method provides new features calculated by combination of both: network structure information and class labels assigned…

社会与信息网络 · 计算机科学 2013-03-04 Tomasz Kajdanowicz , Przemyslaw Kazienko , Piotr Doskocz

We tackle the challenges of modeling high-dimensional data sets, particularly those with latent low-dimensional structures hidden within complex, non-linear, and noisy relationships. Our approach enables a seamless integration of concepts…

机器学习 · 统计学 2025-03-17 Zichuan Guo , Mihai Cucuringu , Alexander Y. Shestopaloff

Recent years witness the tremendous success of generative adversarial networks (GANs) in synthesizing photo-realistic images. GAN generator learns to compose realistic images and reproduce the real data distribution. Through that, a…

计算机视觉与模式识别 · 计算机科学 2023-01-16 Yinghao Xu , Yujun Shen , Jiapeng Zhu , Ceyuan Yang , Bolei Zhou

Numerous social, medical, engineering and biological challenges can be framed as graph-based learning tasks. Here, we propose a new feature based approach to network classification. We show how dynamics on a network can be useful to reveal…

机器学习 · 统计学 2017-06-01 Leonardo Gutierrez Gomez , Benjamin Chiem , Jean-Charles Delvenne

Community detection is considered as a fundamental task in analyzing social networks. Even though many techniques have been proposed for community detection, most of them are based exclusively on the connectivity structures. However, there…

社会与信息网络 · 计算机科学 2019-12-25 Hadi Zare , Mahdi Hajiabadi , Mahdi Jalili

Feature selection is important step in machine learning since it has shown to improve prediction accuracy while depressing the curse of dimensionality of high dimensional data. The neural networks have experienced tremendous success in…

机器学习 · 计算机科学 2021-07-13 Peter Bugata , Peter Drotar