Search Results for author: Ke-Jia Chen

Found 6 papers, 1 papers with code

Balancing Augmentation with Edge-Utility Filter for Signed GNNs

no code implementations25 Oct 2023 Ke-Jia Chen, Yaming Ji, Youran Qu, Chuhan Xu

Secondly, the original signed graph is selectively augmented with the use of (1) an edge perturbation regulator to balance the number of positive and negative edges and to determine the ratio of perturbed edges to original edges and (2) an edge utility filter to remove the negative edges with low utility to make the graph structure more balanced.

Link Prediction

GIMIRec: Global Interaction Information Aware Multi-Interest Framework for Sequential Recommendation

no code implementations16 Dec 2021 Jie Zhang, Ke-Jia Chen, Jingqiang Chen

Sequential recommendation based on multi-interest framework models the user's recent interaction sequence into multiple different interest vectors, since a single low-dimensional vector cannot fully represent the diversity of user interests.

Sequential Recommendation

Self-Supervised Dynamic Graph Representation Learning via Temporal Subgraph Contrast

no code implementations16 Dec 2021 Linpu Jiang, Ke-Jia Chen, Jingqiang Chen

Specifically, a novel temporal subgraph sampling strategy is firstly proposed, which takes each node of the dynamic graph as the central node and uses both neighborhood structures and edge timestamps to sample the corresponding temporal subgraph.

Contrastive Learning Graph Representation Learning +2

Pre-Training on Dynamic Graph Neural Networks

1 code implementation24 Feb 2021 Ke-Jia Chen, Jiajun Zhang, Linpu Jiang, Yunyun Wang, Yuxuan Dai

This paper proposes a pre-training method on dynamic graph neural networks (PT-DGNN), which uses dynamic attributed graph generation tasks to simultaneously learn the structure, semantics, and evolution features of the graph.

Graph Generation Graph Sampling +1

Maximum Likelihood Estimation based on Random Subspace EDA: Application to Extrasolar Planet Detection

no code implementations18 Apr 2017 Bin Liu, Ke-Jia Chen

A population based searching method, called estimation of distribution algorithm (EDA), is adopted to explore the model parameter space starting from a batch of random locations.

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