FORA: Simple and Effective Approximate Single-Source Personalized PageRank

Sibo Wang, Renchi Yang, Xiaokui Xiao, Zhewei Wei*, Yin Yang

*Corresponding author for this work

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

78 Citations (Scopus)

Abstract

Given a graph G, a source node s and a target node t, the personalized PageRank (PPR) of t with respect to s is the probability that a random walk starting from s terminates at t. A single-source PPR (SSPPR) query enumerates all nodes in G, and returns the top-k nodes with the highest PPR values with respect to a given source node s. SSPPR has important applications in web search and social networks, e.g., in Twitter's Who-To-Follow recommendation service. However, SSPPR computation is immensely expensive, and at the same time resistant to indexing and materialization. So far, existing solutions either use heuristics, which do not guarantee result quality, or rely on the strong computing power of modern data centers, which is costly. Motivated by this, we propose FORA, a simple and effective index-based solution for approximate SSPPR processing, with rigorous guarantees on result quality. The basic idea of FORA is to combine two existing methods Forward Push (which is fast but does not guarantee quality) and Monte Carlo Random Walk (accurate but slow) in a simple and yet non-trivial way, leading to an algorithm that is both fast and accurate. Further, FORA includes a simple and effective indexing scheme, as well as a module for top-k selection with high pruning power. Extensive experiments demonstrate that FORA is orders of magnitude more efficient than its main competitors. Notably, on a billion-edge Twitter dataset, FORA answers a top-500 approximate SSPPR query within 5 seconds, using a single commodity server.

Original languageEnglish
Title of host publicationKDD '17: Proceedings of the 23rd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining
PublisherAssociation for Computing Machinery (ACM)
Pages505-514
Number of pages10
ISBN (Print)9781450348874
DOIs
Publication statusPublished - 13 Aug 2017
Event23rd ACM SIGKDD Conference on Knowledge Discovery and Data Mining, KDD 2017 - Halifax, Canada
Duration: 13 Aug 201717 Aug 2017
https://dl.acm.org/doi/proceedings/10.1145/3097983

Publication series

NameProceedings of the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining
VolumePart F129685

Conference

Conference23rd ACM SIGKDD Conference on Knowledge Discovery and Data Mining, KDD 2017
Country/TerritoryCanada
CityHalifax
Period13/08/1717/08/17
Internet address

Scopus Subject Areas

  • Software
  • Information Systems

User-Defined Keywords

  • Forward push
  • Personalized PageRank
  • Random walk

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