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» On Optimally Partitioning a Text to Improve Its Compression
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DCC
2000
IEEE
15 years 10 months ago
SPIHT-NC: Network-Conscious Zerotree Encoding
Wavelet zerotree encoding has been proven to be an efficient way of compressing still images. Two well-known zerotree encoding algorithms, Embedded Zerotree Encoding (EZW) and Se...
Sami Iren, Paul D. Amer
PARA
2004
Springer
15 years 11 months ago
Optimization of a Statically Partitioned Hypermatrix Sparse Cholesky Factorization
The sparse Cholesky factorization of some large matrices can require a two dimensional partitioning of the matrix. The sparse hypermatrix storage scheme produces a recursive 2D par...
José R. Herrero, Juan J. Navarro
WEA
2007
Springer
125views Algorithms» more  WEA 2007»
15 years 11 months ago
Simple Compression Code Supporting Random Access and Fast String Matching
Given a sequence S of n symbols over some alphabet Σ, we develop a new compression method that is (i) very simple to implement; (ii) provides O(1) time random access to any symbol...
Kimmo Fredriksson, Fedor Nikitin
ICDE
2010
IEEE
227views Database» more  ICDE 2010»
16 years 14 days ago
Incorporating partitioning and parallel plans into the SCOPE optimizer
— Massive data analysis on large clusters presents new opportunities and challenges for query optimization. Data partitioning is crucial to performance in this environment. Howev...
Jingren Zhou, Per-Åke Larson, Ronnie Chaiken
AUSDM
2008
Springer
243views Data Mining» more  AUSDM 2008»
15 years 7 months ago
Structure-Based Document Model with Discrete Wavelet Transforms and Its Application to Document Classification
Term signal is an existing text representation that depicts a term as a vector of frequencies of occurrences in a number of user-defined partitions of a document. Although term si...
Supphachai Thaicharoen, Tom Altman, Krzysztof J. C...