The Clustered Causal State Algorithm: Efficient Pattern Discovery for Lossy Data-Compression Applications
Issue No. 05 - September/October (2006 vol. 8)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/MCSE.2006.98
Mendel Schmiedekamp , Applied Research Laboratory
Aparna Subbu , Applied Research Laboratory
Shashi Phoha , Applied Research Laboratory
Pattern discovery is a potential boon for data compression. By identifying generic patterns without human supervision, pattern discovery algorithms can extract the most relevant information for greatest fidelity in lossy compression. However, current approaches to pattern discovery are inefficient and produce cumbersome descriptions of patterns. The Clustered Causal State Algorithm (CCSA) is a new pattern discovery algorithm incorporating recent clustering technology. This algorithm sacrifices accuracy for increased efficiency and smaller model sizes. This makes CCSA ideal for lossy data compression and other real-time applications. This algorithm is compared to other pattern discovery algorithms and demonstrated in an image compression application.
pattern analysis, model-based coding, statistical pattern models, clustering, real-time systems
S. Phoha, A. Subbu and M. Schmiedekamp, "The Clustered Causal State Algorithm: Efficient Pattern Discovery for Lossy Data-Compression Applications," in Computing in Science & Engineering, vol. 8, no. , pp. 59-67, 2006.