Efficient processing of coverage centrality queries on road networks
Coverage Centrality is an important metric to evaluate vertex importance in road networks. However, current solutions have to compute the coverage centrality of all the vertices together, which is resource-wasting, especially when only some ...
Towards efficient simulation-based constrained temporal graph pattern matching
In the context of searching a single data graph G, graph pattern matching is to find all the occurrences of a pattern graph Q in G, specified by a matching rule. It is of paramount importance in many real applications such as social network ...
A supervised contrastive learning-based model for image emotion classification
Images play a vital role in social media platforms, which can more vividly reflect people’s inner emotions and preferences, so visual sentiment analysis has become an important research topic. In this paper, we propose a Supervised Contrastive ...
VR-GNN: variational relation vector graph neural network for modeling homophily and heterophily
Graph Neural Networks (GNNs) have achieved remarkable success in diverse real-world applications. Traditional GNNs are designed based on homophily, which leads to poor performance under heterophily scenarios. Most current solutions deal with ...
Generalizable inductive relation prediction with causal subgraph
Inductive relation prediction is an important learning task for knowledge graph reasoning that aims to infer new facts from existing ones. Previous graph neural networks (GNNs) based methods have demonstrated great success in inductive relation ...
Meta-path automatically extracted from heterogeneous information network for recommendation
Heterogeneous information networks have been proven to effectively improve recommendations due to their diverse information content. However, there are still two challenges for recommendation methods based on heterogeneous information networks. To ...
Foundation models matter: federated learning for multi-center tuberculosis diagnosis via adaptive regularization and model-contrastive learning
In tackling Tuberculosis (TB), a critical global health challenge, the integration of Foundation Models (FMs) into diagnostic processes represents a significant advance. FMs, with their extensive pre-training on diverse datasets, hold the promise ...
GroupMO: a memory-augmented meta-optimized model for group recommendation
Group recommendation aims to suggest desired items for a group of users. Existing methods can achieve inspiring results in predicting the group preferences in data-rich groups. However, they could be ineffective in supporting cold-start groups due ...
OntoMedRec: Logically-pretrained model-agnostic ontology encoders for medication recommendation
Recommending medications with electronic health records (EHRs) is a challenging task for data-driven clinical decision support systems. Most existing models learnt representations for medical concepts based on EHRs and make recommendations with ...
The medium is the message: toxicity declines in structured vs unstructured online deliberations
Humanity needs to deliberate effectively at scale about highly complex and contentious problems. Current online deliberation tools—such as email, chatrooms, and forums—are however plagued by levels of discussion toxicity that deeply undercut the ...
Transferable universal adversarial perturbations against speaker recognition systems
Deep neural networks (DNN) exhibit powerful feature extraction capabilities, making them highly advantageous in numerous tasks. DNN-based techniques have become widely adopted in the field of speaker recognition. However, imperceptible adversarial ...