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Author

Kai Wang

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Jun 2026

Efficient Hyper-Truss Decomposition over Hypergraphs

Cohesive subgraph mining in hypergraphs has recently attracted increasing research attention due to its broad applicability in domains such as social networks, co-authorship networks, and recommendation systems. An important model, the hyper k -truss, is defined as a maximal cohesive subgraph in which each hyper-ed...

Hao-Zhe Yin, Kai Wang, Wen-Jie Zhang et al. · 0 citations
Book Open access Aug 2026

Structure-Aware Abstraction of Hierarchical Time Series

This work provides the first formal analysis of HTSA, proving its NP-hardness and showing that the objective is neither monotone nor submodular, and proposes OSS, whose discretized search provides a 1/alpha-approximation guarantee for each single optimal-subtree computation.

Yihan Wu, Xuliang Zhu, Guozhong Li et al. · 0 citations
Preprint Aug 2026

Interpretable Unsupervised Community Detection with LLM-Symbolized Structured Processes

LUCID, an LLM-guided, interpretable, training-free, and unsupervised community detection method, designed as a four-stage pipeline that achieves state-of-the-art performance and consistently outperforms leading unsupervised and semi-supervised baselines.

Aoting Zeng, Kai Wang, Jianwei Wang et al. · 0 citations

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