Venturini Compressed Data Structures for Strings

On Searching and Extracting Strings from Compressed Textual Data
1. Auflage 2013
ISBN: 978-94-6239-033-1
Verlag: Atlantis Press
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 118 Seiten

Reihe: Mathematics and Statistics (R0)

Data compression is mandatory to manage massive datasets, indexing is fundamental to query them. However, their goals appear as counterposed: the former aims at minimizing data redundancies, whereas the latter augments the dataset with auxiliary information to speed up the query resolution. In this monograph we introduce solutions that overcome this dichotomy. We start by presenting the use of optimization techniques to improve the compression of classical data compression algorithms, then we move to the design of compressed data structures providing fast random access or efficient pattern matching queries on the compressed dataset. These theoretical studies are supported by experimental evidences of their impact in practical scenarios.

Zielgruppe

Research

Autoren/Hrsg.

Venturini, Rossano

Inhaltsverzeichnis

Introduction.- Basic concepts.- Optimally partitioning a text to improve its compression.- Bit-complexity of Lempel-Ziv compression.- Fast random access on compressed data.- Experiments on compressed full-text indexing.- Dictionary indexes.- Future directions of research.