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Urban ride-hailing demand prediction is a crucial but challenging task for intelligent transportation system construction. Predictable ride-hailing demand can facilitate more reasonable vehicle scheduling and online car-hailing platform…

机器学习 · 计算机科学 2020-09-11 Guangyin Jin , Zhexu Xi , Hengyu Sha , Yanghe Feng , Jincai Huang

Recently, diffusion-based recommendation methods have achieved impressive results. However, existing approaches predominantly treat each user's historical interactions as independent training samples, overlooking the potential of…

社会与信息网络 · 计算机科学 2025-04-08 Xuan Zhang , Xiang Deng , Hongxing Yuan , Chunyu Wei , Yushun Fan

Online communities such as Facebook and Twitter are enormously popular and have become an essential part of the daily life of many of their users. Through these platforms, users can discover and create information that others will then…

信息检索 · 计算机科学 2019-04-17 Weiping Song , Zhiping Xiao , Yifan Wang , Laurent Charlin , Ming Zhang , Jian Tang

Despite achieving strong performance in semi-supervised node classification task, graph neural networks (GNNs) are vulnerable to adversarial attacks, similar to other deep learning models. Existing researches focus on developing either…

机器学习 · 计算机科学 2021-08-26 Shuchang Tao , Huawei Shen , Qi Cao , Liang Hou , Xueqi Cheng

Recommender systems aim to provide personalized services to users and are playing an increasingly important role in our daily lives. The key of recommender systems is to predict how likely users will interact with items based on their…

信息检索 · 计算机科学 2022-04-26 Wenqi Fan , Xiaorui Liu , Wei Jin , Xiangyu Zhao , Jiliang Tang , Qing Li

Now-a-days, Online Social Networks (OSNs) are extensively used by different commercial houses for viral marketing. The key problem that arises in this context is to choose a limited number of highly influential users as the initial adopters…

社会与信息网络 · 计算机科学 2026-01-23 Poonam Sharma , Suman Banerjee

Feature propagation in Deep Neural Networks (DNNs) can be associated to nonlinear discrete dynamical systems. The novelty, in this paper, lies in letting the discretization parameter (time step-size) vary from layer to layer, which needs to…

最优化与控制 · 数学 2022-04-20 Harbir Antil , Hugo Díaz , Evelyn Herberg

Graph Convolution Networks (GCNs) are becoming more and more popular for learning node representations on graphs. Though there exist various developments on sampling and aggregation to accelerate the training process and improve the…

机器学习 · 计算机科学 2020-10-30 Xu Zou , Qiuye Jia , Jianwei Zhang , Chang Zhou , Hongxia Yang , Jie Tang

The development of online economics arouses the demand of generating images of models on product clothes, to display new clothes and promote sales. However, the expensive proprietary model images challenge the existing image virtual try-on…

计算机视觉与模式识别 · 计算机科学 2021-12-15 Ruili Feng , Cheng Ma , Chengji Shen , Xin Gao , Zhenjiang Liu , Xiaobo Li , Kairi Ou , Zhengjun Zha

Recently, Graph Neural Networks (GNNs), including Homogeneous Graph Neural Networks (HomoGNNs) and Heterogeneous Graph Neural Networks (HeteGNNs), have made remarkable progress in many physical scenarios, especially in communication…

机器学习 · 计算机科学 2023-10-17 Renyang Liu , Wei Zhou , Jinhong Zhang , Xiaoyuan Liu , Peiyuan Si , Haoran Li

Graph Neural Networks (GNNs) are proficient in graph representation learning and achieve promising performance on versatile tasks such as node classification and link prediction. Usually, a comprehensive hyperparameter tuning is essential…

机器学习 · 计算机科学 2024-10-10 Lequan Lin , Dai Shi , Andi Han , Zhiyong Wang , Junbin Gao

Diffusion Probabilistic Models (DPMs) have emerged as a powerful class of deep generative models, achieving remarkable performance in image synthesis tasks. However, these models face challenges in terms of widespread adoption due to their…

计算机视觉与模式识别 · 计算机科学 2024-06-03 Kidist Amde Mekonnen , Nicola Dall'Asen , Paolo Rota

Diffusion models have emerged as powerful generative models for graph generation, yet their use for conditional graph generation remains a fundamental challenge. In particular, guiding diffusion models on graphs under arbitrary reward…

机器学习 · 计算机科学 2025-05-27 Victor M. Tenorio , Nicolas Zilberstein , Santiago Segarra , Antonio G. Marques

In this work, we propose to employ information-geometric tools to optimize a graph neural network architecture such as the graph convolutional networks. More specifically, we develop optimization algorithms for the graph-based…

机器学习 · 计算机科学 2020-08-25 Mohammad Rasool Izadi , Yihao Fang , Robert Stevenson , Lizhen Lin

Deep reinforcement learning (DRL) has been widely used in many important tasks of communication networks. In order to improve the perception ability of DRL on the network, some studies have combined graph neural networks (GNNs) with DRL,…

密码学与安全 · 计算机科学 2025-01-22 Xuzeng Li , Tao Zhang , Jian Wang , Zhen Han , Jiqiang Liu , Jiawen Kang , Dusit Niyato , Abbas Jamalipour

Stochastic optimization plays a crucial role in the advancement of deep learning technologies. Over the decades, significant effort has been dedicated to improving the training efficiency and robustness of deep neural networks, via various…

机器学习 · 计算机科学 2024-08-21 Huixiu Jiang , Ling Yang , Yu Bao , Rutong Si , Sikun Yang

The paradigm shift from shallow classifiers with hand-crafted features to end-to-end trainable deep learning models has shown significant improvements on supervised learning tasks. Despite the promising power of deep neural networks (DNN),…

机器学习 · 计算机科学 2017-06-09 Chih-Kuan Yeh , Yao-Hung Hubert Tsai , Yu-Chiang Frank Wang

Graph representation learning is a fundamental problem for modeling relational data and benefits a number of downstream applications. Traditional Bayesian-based graph models and recent deep learning based GNN either suffer from…

机器学习 · 计算机科学 2024-03-27 Hanxuan Yang , Qingchao Kong , Wenji Mao

Recent years have witnessed the deployment of adversarial attacks to evaluate the robustness of Neural Networks. Past work in this field has relied on traditional optimization algorithms that ignore the inherent structure of the problem and…

机器学习 · 计算机科学 2021-06-01 Florian Jaeckle , M. Pawan Kumar

Many phenomena in real world social networks are interpreted as spread of influence between activated and non-activated network elements. These phenomena are formulated by combinatorial graphs, where vertices represent the elements and…

离散数学 · 计算机科学 2024-03-01 Siavash Askari , Manouchehr Zaker