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arXiv 1102.4480cs.DS
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LGM:从线性图中挖掘频繁子图

LGM: Mining Frequent Subgraphs from Linear Graphs

Yasuo Tabei, Daisuke Okanohara, Shuichi Hirose, Koji Tsuda

摘要:

线性图是顶点是全序的图。符号之间相互作用的生物和语言序列自然地表示为线性图。例子包括蛋白质接触图,RNA二级结构和谓词-论元结构。我们的算法,线性图挖掘机(LGM),利用顶点顺序的频繁子图的有效枚举。基于逆向搜萦原理,系统地遍历模式空间,而无需昂贵的重复检查。不连通子图模式在线性图中特别重要,因为它们具有连续性。与传统的图挖掘算法只检测连接模式不同,LGM也可以检测断开模式。在蛋白质接触图的实验中证明了LGM的实用性和效率。

英文摘要:

A linear graph is a graph whose vertices are totally ordered. Biological and linguistic sequences with interactions among symbols are naturally represented as linear graphs. Examples include protein contact maps, RNA secondary structures and predicate-argument structures. Our algorithm, linear graph miner (LGM), leverages the vertex order for efficient enumeration of frequent subgraphs. Based on the reverse search principle, the pattern space is systematically traversed without expensive duplication checking. Disconnected subgraph patterns are particularly important in linear graphs due to their sequential nature. Unlike conventional graph mining algorithms detecting connected patterns only, LGM can detect disconnected patterns as well. The utility and efficiency of LGM are demonstrated in experiments on protein contact maps.

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