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» On Optimally Partitioning a Text to Improve Its Compression
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IPM
2011
71views more  IPM 2011»
12 years 11 months ago
Improving semistatic compression via phrase-based modeling
In recent years, new semistatic word-based byte-oriented text compressors, such as Tagged Huffman and those based on Dense Codes, have shown that it is possible to perform fast d...
Nieves R. Brisaboa, Antonio Fariña, Gonzalo...
ESA
2011
Springer
231views Algorithms» more  ESA 2011»
12 years 8 months ago
Distribution-Aware Compressed Full-Text Indexes
Abstract. In this paper we address the problem of building a compressed self-index that, given a distribution for the pattern queries and a bound on the space occupancy, minimizes ...
Paolo Ferragina, Jouni Sirén, Rossano Ventu...
FSTTCS
2004
Springer
14 years 1 months ago
Improved Approximation Algorithms for Maximum Graph Partitioning Problems
Abstract Abstract. In this paper we improve the analysis of approximation algorithms based on semidefinite programming for the maximum graph partitioning problems MAX-k-CUT, MAX-k...
Gerold Jäger, Anand Srivastav
DCC
2005
IEEE
14 years 8 months ago
Two-Level Directory based Compression
In this paper we present a new dictionary-based preprocessing technique and its implementation called TWRT (Two-level Word Replacing Transformation). Our preprocessor uses several...
Przemyslaw Skibinski
ICIP
2008
IEEE
14 years 10 months ago
Multiscale recurrent pattern image coding with a flexible partition scheme
In this paper we present a new segmentation method for the Multidimensional Multiscale Parser (MMP) algorithm. In previous works we have shown that, for text and compound images, ...
Eduardo A. B. da Silva, Manuel J. C. S. Reis, Muri...