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» On Optimally Partitioning a Text to Improve Its Compression
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DCC
2000
IEEE
14 years 25 days 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
14 years 1 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»
14 years 2 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»
14 years 3 months 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»
13 years 10 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...