Compressed Representations of Permutations, and Applications

Authors Jeremy Barbay, Gonzalo Navarro

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Jeremy Barbay
Gonzalo Navarro

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Jeremy Barbay and Gonzalo Navarro. Compressed Representations of Permutations, and Applications. In 26th International Symposium on Theoretical Aspects of Computer Science. Leibniz International Proceedings in Informatics (LIPIcs), Volume 3, pp. 111-122, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)


We explore various techniques to compress a permutation $\pi$ over $n$ integers, taking advantage of ordered subsequences in $\pi$, while supporting its application $\pi(i)$ and the application of its inverse $\pi^{-1}(i)$ in small time. Our compression schemes yield several interesting byproducts, in many cases matching, improving or extending the best existing results on applications such as the encoding of a permutation in order to support iterated applications $\pi^{k}(i)$ of it, of integer functions, and of inverted lists and suffix arrays.
  • Compression
  • Permutations
  • Succinct data structures
  • Adaptive sorting


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