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International Journal of Education and Management Engineering(IJEME)

ISSN: 2305-3623 (Print), ISSN: 2305-8463 (Online)

Published By: MECS Press

IJEME Vol.7, No.5, Sep. 2017

Adaptive Dictionary-based Compression of Protein Sequences

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Author(s)

Akash Nag, Sunil Karforma

Index Terms

Protein sequence compression;dictionary based compression;huffman encoding

Abstract

This paper introduces a simple and fast lossless compression algorithm, called CAD, for the compression of protein sequences. The proposed algorithm is specially suited for compressing proteomes, which are the collection of all proteins expressed by an organism. Maintaining a changing dictionary of actively used amino-acid residues, the algorithm uses the adaptive dictionary together with Huffman coding to achieve an average compression rate of 3.25 bits per symbol, better than most other existing protein-compression and general-purpose compression algorithms known to us. With an average compression ratio of 2.46:1 and an average compression rate of 1.32M residues/sec, our algorithm outperforms every other compression algorithm for compressing protein sequences in terms of the balance in compression-time and compression rate.

Cite This Paper

Akash Nag, Sunil Karforma,"Adaptive Dictionary-based Compression of Protein Sequences", International Journal of Education and Management Engineering(IJEME), Vol.7, No.5, pp.1-6, 2017.DOI: 10.5815/ijeme.2017.05.01

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