DenseZDD: A Compact and Fast Index for Families of Sets

  • Shuhei Denzumi
  • Jun Kawahara
  • Koji Tsuda
  • Hiroki Arimura
  • Shin-ichi Minato
  • Kunihiko Sadakane
Conference paper

DOI: 10.1007/978-3-319-07959-2_16

Part of the Lecture Notes in Computer Science book series (LNCS, volume 8504)
Cite this paper as:
Denzumi S., Kawahara J., Tsuda K., Arimura H., Minato S., Sadakane K. (2014) DenseZDD: A Compact and Fast Index for Families of Sets. In: Gudmundsson J., Katajainen J. (eds) Experimental Algorithms. SEA 2014. Lecture Notes in Computer Science, vol 8504. Springer, Cham

Abstract

In many real-life problems, we are often faced with manipulating families of sets. Manipulation of large-scale set families is one of the important fundamental techniques for web information retrieval, integration, and mining. For this purpose, a special type of binary decision diagrams (BDDs), called Zero-suppressed BDDs (ZDDs), is used. However, current techniques for storing ZDDs require a huge amount of memory and membership operations are slow. This paper introduces DenseZDD, a compressed index for static ZDDs. Our technique not only indexes set families compactly but also executes fast member membership operations. We also propose a hybrid method of DenseZDD and ordinary ZDDs to allow for dynamic indices.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Shuhei Denzumi
    • 1
  • Jun Kawahara
    • 2
  • Koji Tsuda
    • 3
    • 4
  • Hiroki Arimura
    • 1
  • Shin-ichi Minato
    • 1
    • 4
  • Kunihiko Sadakane
    • 5
  1. 1.Graduate School of ISTHokkaido UniversityJapan
  2. 2.Nara Institute of Science and Technology (NAIST)Japan
  3. 3.National Institute of Advanced Industrial Science and Technology (AIST)Japan
  4. 4.ERATO MINATO Discrete Structure Manipulation System Project, JSTJapan
  5. 5.National Institute of Informatics (NII)Japan

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