3 papers
cs.SI2024
Unsupervised node clustering via contrastive hard sampling
Hang Cui, Tarek Abdelzaher
This paper introduces a fine-grained contrastive learning scheme for unsupervised node clustering. Previous clustering methods only focus on a small feature set (class-dependent fe…
cs.SI2024
Polarization Detection on Social Networks: dual contrastive objectives for Self-supervision
Hang Cui, Tarek Abdelzaher
Echo chambers and online discourses have become prevalent social phenomena where communities engage in dramatic intra-group confirmations and inter-group hostility. Polarization de…
cs.SI2024
Virtual Node Generation for Node Classification in Sparsely-Labeled Graphs
Hang Cui, Tarek Abdelzaher
In the broader machine learning literature, data-generation methods demonstrate promising results by generating additional informative training examples via augmenting sparse label…