- author = "Ahmed Kattan and Riccardo Poli",
- title = "Evolution of human-competitive lossless compression algorithms with {GP-zip2}",
- journal = "Genetic Programming and Evolvable Machines",
- year = "2012",
- volume = "12",
- number = "4",
- pages = "335--364",
- month = dec,
- keywords = "genetic algorithms, genetic programming, GPzip, Lossless Compression, Human-competitive Results, Feature Extraction, K-mean",
- ISSN = "1389-2576",
-
URL = "
https://www.ahmedkattan.net/_files/ugd/d4f8e7_b69c2e70133d40f0982bfbd8c45f53a7.pdf",
-
DOI = "
10.1007/s10710-011-9133-6",
- size = "30 pages",
- abstract = "We propose GP-zip2, a new approach to loss less data compression based on Genetic Programming (GP). GP is used to optimally combine well-known loss-less compression algorithms to maximise data compression. GP-zip2 evolves programs with multiple components. One component analyses statistical features extracted by sequentially scanning the data to be compressed and divides the data into blocks. These blocks are projected onto a two-dimensional Euclidean space via two further (evolved) program components. K-means clustering is then applied to group similar data blocks. Each cluster is labelled with the optimal compression algorithm for its member blocks. After evolution, evolved programs can be used to compress unseen data. The compression algorithms available to GP-zip2 are: Arithmetic coding, Lempel-Ziv-Welch, Unbounded Prediction by Partial Matching, Run Length Encoding, and Bzip2. Experimentation shows that the results produced by GP-zip2 are human-competitive, being typically superior to well-established human-designed compression algorithms in terms of the compression ratios achieved in heterogeneous archive files.",
-
notes = "GP chooses when to switch between 5 well known
algorithms (LZW, PPMD, Run-length encoding and Bzip2)
and which to use. Three trees co-evolve to do work
between themselves (splitter tree, two feature
extraction, cf \cite{langdon:book} ). Error in previous
Kattan GP-zip work. Threshold theta on splitter tree
output, Davis Bouldin index (DBI). variable length
header in output file. Compares well to WinRar. Amazon
EC2 AWS cloud computer used. Model of use assumes
compress once (eg DVD) uncompressed many times.
Single v. two pass approaches. Arithmetic coding.",
- affiliation = "School of Computer Science and Electronic Engineering, University of Essex, Colchester, CO4 3SQ UK",
