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Trie-Compressed Adaptive Set Intersection

Authors Diego Arroyuelo , Juan Pablo Castillo

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Subject Classification

ACM Subject Classification
  • Theory of computation → Data compression
  • Theory of computation → Design and analysis of algorithms
  • Theory of computation → Data structures and algorithms for data management
  • Information systems → Information retrieval query processing
Keywords
  • Set intersection problem
  • Adaptive Algorithms
  • Compressed and compact data structures

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Abstract

We introduce space- and time-efficient algorithms and data structures for the offline set intersection problem. We show that a sorted integer set S ⊆ [0..u) of n elements can be represented using compressed space while supporting k-way intersections in adaptive O(kδlg(u/δ)) time, δ being the alternation measure introduced by Barbay and Kenyon. Our experimental results suggest that our approaches are competitive in practice, outperforming the most efficient alternatives (Partitioned Elias-Fano indexes, Roaring Bitmaps, and Recursive Universe Partitioning (RUP)) in several scenarios, offering in general relevant space-time trade-offs.

Cite As Get BibTex

Diego Arroyuelo and Juan Pablo Castillo. Trie-Compressed Adaptive Set Intersection. In 34th Annual Symposium on Combinatorial Pattern Matching (CPM 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 259, pp. 1:1-1:19, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023) https://doi.org/10.4230/LIPIcs.CPM.2023.1

Author Details

Diego Arroyuelo
  • Departamento de Informática, Universidad Técnica Federico Santa María, Santiago, Chile
  • Millennium Institute for Foundational Research on Data, Santiago, Chile
Juan Pablo Castillo
  • Departamento de Informática, Universidad Técnica Federico Santa María, Santiago, Chile
  • Millennium Institute for Foundational Research on Data, Santiago, Chile

Funding

This work was funded by ANID – Millennium Science Initiative Program – Code ICN17_002, Chile (both authors).

Acknowledgements

We thank Gonzalo Navarro, Cristian Riveros, Adrián Gómez-Brandón, and Francesco Tosoni for enlightening comments, suggestions, and discussions about this work. We also thank the anonymous reviewers whose thorough reviews helped us to improve this paper.

Supplementary Materials

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