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Title: K-reach : who is in your small world
Authors: Cheng, James
Shang, Zechao
Cheng, Hong
Wang, Haixun
Yu, Jeffrey Xu
Keywords: DRNTU::Engineering::Computer science and engineering
Issue Date: 2012
Source: Cheng, J., Shang, Z., Cheng, H., Wang, H., & Yu, J. X. (2012). K-reach: who is in your small world. Proceedings of the VLDB Endowment, 5(11), 1292-1303.
Series/Report no.: Proceedings of the VLDB endowment
Abstract: We study the problem of answering k-hop reachability queries in a directed graph, i.e., whether there exists a directed path of length k, from a source query vertex to a target query vertex in the input graph. The problem of k-hop reachability is a general problem of the classic reachability (where k = ∞). Existing indexes for processing classic reachability queries, as well as for processing shortest path queries, are not applicable or not efficient for processing k-hop reachability queries. We propose an index for processing k-hop reachability queries, which is simple in design and efficient to construct. Our experimental results on a wide range of real datasets show that our index is more efficient than the state-of-the-art indexes even for processing classic reachability queries, for which these indexes are primarily designed. We also show that our index is efficient in answering k-hop reachability queries.
Rights: © 2012 VLDB Endowment.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCSE Journal Articles

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