Search Results for author: Artur Ziviani

Found 4 papers, 2 papers with code

A Survey on Embedding Dynamic Graphs

no code implementations4 Jan 2021 Claudio D. T. Barros, Matheus R. F. Mendonça, Alex B. Vieira, Artur Ziviani

Embedding static graphs in low-dimensional vector spaces plays a key role in network analytics and inference, supporting applications like node classification, link prediction, and graph visualization.

Anomaly Detection Dynamic graph embedding +3

Efficient Information Diffusion in Time-Varying Graphs through Deep Reinforcement Learning

1 code implementation27 Nov 2020 Matheus R. F. Mendonça, André M. S. Barreto, Artur Ziviani

In this context, we propose Spatio-Temporal Influence Maximization~(STIM), a model trained with Reinforcement Learning and Graph Embedding over a set of artificial TVGs that is capable of learning the temporal behavior and connectivity pattern of each node, allowing it to predict the best moment to start a diffusion through the TVG.

Graph Embedding reinforcement-learning +1

Approximating Network Centrality Measures Using Node Embedding and Machine Learning

1 code implementation29 Jun 2020 Matheus R. F. Mendonça, André M. S. Barreto, Artur Ziviani

Our proposed model, entitled Network Centrality Approximation using Graph Embedding (NCA-GE), uses the adjacency matrix of a graph and a set of features for each node (here, we use only the degree) as input and computes the approximate desired centrality rank for every node.

BIG-bench Machine Learning Graph Embedding

DJEnsemble: On the Selection of a Disjoint Ensemble of Deep Learning Black-Box Spatio-Temporal Models

no code implementations22 May 2020 Yania Molina Souto, Rafael Pereira, Rocío Zorrilla, Anderson Chaves, Brian Tsan, Florin Rusu, Eduardo Ogasawara, Artur Ziviani, Fabio Porto

In the online part, we compute a DJEnsemble plan which minimizes a multivariate cost function based on estimates for the prediction error and the execution cost -- producing a model spatial allocation matrix -- and run the optimal ensemble plan.

Cannot find the paper you are looking for? You can Submit a new open access paper.