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Set Similarity Joins with Complex Expressions on Distributed Platforms

  • Diego Junior do Carmo Oliveira
  • Felipe Ferreira Borges
  • Leonardo Andrade Ribeiro
  • Alfredo Cuzzocrea
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11019)

Abstract

A set similarity join finds all similar pairs from a collection of sets. This operation is essential for many important tasks in Big Data analytics including string data integration and cleaning. The vast majority of set similarity join algorithms proposed so far considers string data represented by a single set over which a simple similarity predicate is defined. However, real data is typically multi-attribute and, thus, better represented by multiple sets. Such a representation requires complex expressions to capture a given notion of similarity. Moreover, similarity join processing under this new formulation is clearly more expensive, which calls for distributed algorithms to deal with large datasets. In this paper, we present a distributed algorithm for set similarity joins with complex similarity expressions. Our approach supports complex Boolean expressions over multiple predicates. We propose a simple, but effective data partitioning strategy to reduce both communication and computation costs. We have implemented our algorithm in Spark, a popular distributed data processing engine. Experimental results show that the proposed approach is efficient and scalable.

Keywords

Similarity join Distributed algorithms Data integration 

Notes

Acknowledgment

This work was partially supported by Brazilian agency CAPES.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Diego Junior do Carmo Oliveira
    • 1
  • Felipe Ferreira Borges
    • 1
  • Leonardo Andrade Ribeiro
    • 1
  • Alfredo Cuzzocrea
    • 2
  1. 1.Instituto de InformáticaUniversidade Federal de GoiásGoiâniaBrazil
  2. 2.DIA DepartmentUniversity of Trieste and ICAR-CNRTriesteItaly

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