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Adaptive context tree weighting

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Date

2012

Authors

O'Neill, Alexander
Hutter, Marcus
Shao, Wen
Sunehag, Peter

Journal Title

Journal ISSN

Volume Title

Publisher

IEEE

Abstract

We describe an adaptive context tree weighting (ACTW) algorithm, as an extension to the standard context tree weighting (CTW) algorithm. Unlike the standard CTW algorithm, which weights all observations equally regardless of the depth, ACTW gives increasing weight to more recent observations, aiming to improve performance in cases where the input sequence is from a non-stationary distribution. Data compression results show ACTW variants improving over CTW on merged files from standard compression benchmark tests while never being significantly worse on any individual file.

Description

Keywords

Citation

URI

http://hdl.handle.net/1885/14804

Collections

ANU Research Publications

Source

Type

Conference paper

Book Title

2012 Data Compression Conference (DCC), 10-12 April 2012, Snowbird, UT

Entity type

Access Statement

License Rights

DOI

10.1109/DCC.2012.38

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O'Neill et al Adaptive Context Tree Weighting 2012.pdf (107.55 KB)

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