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arXiv · 2404.12559

An algorithm with a delay of $\mathcal{O}(k\Delta)$ for enumerating connected induced subgraphs of size $k$

Chenglong Xiao·Chengyong Mao·Shanshan Wang
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Abstract

The problem of enumerating connected subgraphs of a given size in a graph has been extensively studied in recent years. In this paper, we propose an algorithm with a delay of $O(k\Delta)$ for enumerating all connected induced subgraphs of size $k$ in an undirected graph $G=(V, E)$, where $k$ and $\Delta$ are respectively the size of subgraphs and the maximum degree of $G$. The algorithm requires a preprocessing step of $O(|V| + |E|)$ time to compute a depth-first search traversal order. The proposed algorithm improves upon the current best delay bound $O(k^2\Delta)$ for the connected induced subgraph enumeration problem in the literature.

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Chenglong Xiao, Chengyong Mao, Shanshan Wang. 2024-04-19. An algorithm with a delay of $\mathcal{O}(k\Delta)$ for enumerating connected induced subgraphs of size $k$. https://arxiv.org/abs/2404.12559

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