NDLI: Reachability queries on large dynamic graphs: a total order approach

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Reachability queries on large dynamic graphs: a total order approach

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Reachability queries on large dynamic graphs: a total order approach

Content Provider	ACM Digital Library
Author	Wang, Sibo Zhu, Andy Diwen Xiao, Xiaokui Lin, Wenqing
Abstract	Reachability queries are a fundamental type of queries on graphs that find important applications in numerous domains. Although a plethora of techniques have been proposed for reachability queries, most of them require that the input graph is static, i.e., they are inapplicable to the {\em dynamic} graphs (e.g., social networks and the Semantic Web) commonly encountered in practice. There exist a few techniques that can handle dynamic graphs, but none of them can scale to sizable graphs without significant loss of efficiency. To address this deficiency, this paper presents a novel study on reachability indices for large dynamic graphs. We first introduce a general indexing framework that summarizes a family of reachability indices with the best performance among the existing techniques for static graphs. Then, we propose general and efficient algorithms for handling vertex insertions and deletions under the proposed framework. In addition, we show that our update algorithms can be used to improve the existing reachability techniques on static graphs, and we also propose a new approach for constructing a reachability index from scratch under our framework. We experimentally evaluate our solution on a large set of benchmark datasets, and we demonstrate that our solution not only supports efficient updates on dynamic graphs, but also provides even better query performance than the state-of-the-art techniques for static graphs.
Starting Page	1323
Ending Page	1334
Page Count	12
File Format	PDF
ISBN	9781450323765
DOI	10.1145/2588555.2612181
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-06-18
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Updates Graphs Reachability
Content Type	Text
Resource Type	Article

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