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arXiv 2111.04556cs.DBcs.DS
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图上的时空有效正则路图

Time- and Space-Efficient Regular Path Queries on Graphs

Diego Arroyuelo, Aidan Hogan, Gonzalo Navarro, Javiel Rojas-Ledesma

摘要:

我们引入了一个时间和空间有效的技术来解决正则路径查询标记图。我们将正则表达式的Glushkov自动机的位并行模拟与Arroyuelo等人引入的thering索引相结合,利用其三元组的小波树表示,以便有效地达到与查询相关的产品图的状态。我们的查询算法能够同时处理多个自动机状态,以及多个图节点/标签。我们的实验结果表明,我们的表示使用的空间比文献中的替代品少3-5倍,而通常在查询时间上优于它们(比下一个最好的快1.67倍)。

英文摘要:

We introduce a time- and space-efficient technique to solve regularpath queries over labeled graphs. We combine a bit-parallel simula-tion of the Glushkov automaton of the regular expression with thering index introduced by Arroyuelo et al., exploiting its wavelettree representation of the triples in order to efficiently reach thestates of the product graph that are relevant for the query. Ourquery algorithm is able to simultaneously process several automa-ton states, as well as several graph nodes/labels. Our experimentalresults show that our representation uses 3-5 times less space thanthe alternatives in the literature, while generally outperformingthem in query times (1.67 times faster than the next best).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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