Random access to Fibonacci encoded files

Shmuel T. Klein; Dana Shapira

doi:https://doi.org/10.1016/j.dam.2015.11.003

Random access to Fibonacci encoded files

Shmuel T. Klein, Dana Shapira

Bar-Ilan University, Ariel University

Research output: Contribution to journal › Article › peer-review

Abstract

A Wavelet tree is a data structure adjoined to a file that has been compressed by a variable length encoding, which allows direct access to the underlying file, resulting in the fact that the compressed file is not needed any more. We adapt, in this paper, the Wavelet tree to Fibonacci codes, so that in addition to supporting direct access to the Fibonacci encoded file, we also increase the compression savings when compared to the original Fibonacci compressed file. The improvements are achieved by means of a new pruning technique.

Original language	English
Pages (from-to)	115-128
Number of pages	14
Journal	Discrete Applied Mathematics
Volume	212
DOIs	https://doi.org/10.1016/j.dam.2015.11.003
State	Published - 30 Oct 2016

Keywords

Fibonacci codes
Rank and select
Wavelet trees

All Science Journal Classification (ASJC) codes

Discrete Mathematics and Combinatorics
Applied Mathematics

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https://doi.org/10.1016/j.dam.2015.11.003

Cite this

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title = "Random access to Fibonacci encoded files",

abstract = "A Wavelet tree is a data structure adjoined to a file that has been compressed by a variable length encoding, which allows direct access to the underlying file, resulting in the fact that the compressed file is not needed any more. We adapt, in this paper, the Wavelet tree to Fibonacci codes, so that in addition to supporting direct access to the Fibonacci encoded file, we also increase the compression savings when compared to the original Fibonacci compressed file. The improvements are achieved by means of a new pruning technique.",

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AU - Shapira, Dana

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AB - A Wavelet tree is a data structure adjoined to a file that has been compressed by a variable length encoding, which allows direct access to the underlying file, resulting in the fact that the compressed file is not needed any more. We adapt, in this paper, the Wavelet tree to Fibonacci codes, so that in addition to supporting direct access to the Fibonacci encoded file, we also increase the compression savings when compared to the original Fibonacci compressed file. The improvements are achieved by means of a new pruning technique.

KW - Fibonacci codes

KW - Rank and select

KW - Wavelet trees

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M3 - مقالة

SN - 0166-218X

VL - 212

SP - 115

EP - 128

JO - Discrete Applied Mathematics

JF - Discrete Applied Mathematics

ER -

Random access to Fibonacci encoded files

Abstract

Keywords

All Science Journal Classification (ASJC) codes

Access to Document

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