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CPM
2004
Springer
87views Combinatorics» more  CPM 2004»
15 years 3 months ago
A Trie-Based Approach for Compacting Automata
We describe a new technique for reducing the number of nodes and symbols in automata based on tries. The technique stems from some results on anti-dictionaries for data compression...
Maxime Crochemore, Chiara Epifanio, Roberto Grossi...
ECIR
2011
Springer
14 years 1 months ago
SkipBlock: Self-indexing for Block-Based Inverted List
In large web search engines the performance of Information Retrieval systems is a key issue. Block-based compression methods are often used to improve the search performance, but c...
Stéphane Campinas, Renaud Delbru, Giovanni ...
CISS
2010
IEEE
14 years 1 months ago
Average case analysis of sparse recovery from combined fusion frame measurements
—Sparse representations have emerged as a powerful tool in signal and information processing, culminated by the success of new acquisition and processing techniques such as Compr...
Petros Boufounos, Gitta Kutyniok, Holger Rauhut
PCM
2009
Springer
180views Multimedia» more  PCM 2009»
15 years 2 months ago
RST-Invariant Semi-fragile Image Authentication Based on DWT-Coefficient Quantization
Abstract. In this paper, we propose an image moment-based geometric normalization to be applied before embedding and extracting a digital watermark in the DWT-domain of JPEG2000. A...
Mathias Schlauweg, Erika Müller
ALMOB
2008
131views more  ALMOB 2008»
14 years 10 months ago
Fast algorithms for computing sequence distances by exhaustive substring composition
The increasing throughput of sequencing raises growing needs for methods of sequence analysis and comparison on a genomic scale, notably, in connection with phylogenetic tree reco...
Alberto Apostolico, Olgert Denas