Exploiting Redundancy to Achieve Lossy Text Compression

Regardless of the source language, text documents contain significant amount of redundancy. Data compression exploits this redundancy to improve transmission efficiency and/or save storage space. Conventionally, various lossless text compression algorithms have been introduced for critical applicati...

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Bibliographic Details
Main Authors: Ebru CELIKEL CANKAYA, Venka PALANIAPPAN, Shahram LATIFI
Format: Article
Language:English
Published: Pamukkale University 2010-03-01
Series:Pamukkale University Journal of Engineering Sciences
Subjects:
Online Access:http://dergipark.ulakbim.gov.tr/pajes/article/view/5000088748
Description
Summary:Regardless of the source language, text documents contain significant amount of redundancy. Data compression exploits this redundancy to improve transmission efficiency and/or save storage space. Conventionally, various lossless text compression algorithms have been introduced for critical applications, where any loss after recovery is intolerable. For non-critical applications, i.e. where data loss to some extent is acceptable, one may employ lossy compression to acquire superior efficiency. We use three recent techniques to achieve character-oriented lossy text compression: Letter Mapping (LM), Dropped Vowels (DV), and Replacement of Characters (RC), and use them as a front end anticipating to improve compression performance of conventional compression algorithms. We implement the scheme on English and Turkish sample texts and compare the results. Additionally, we include performance improvement rates for these models when used as a front end to Huffman and Arithmetic Coding algorithms. As for the future work, we propose several ideas to further improve the current performance of each model.
ISSN:1300-7009
2147-5881