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» A Linear Size Index for Approximate Pattern Matching
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ICDE
2008
IEEE
132views Database» more  ICDE 2008»
14 years 7 months ago
The Space Complexity of Processing XML Twig Queries Over Indexed Documents
Abstract-- Current twig join algorithms incur high memory costs on queries that involve child-axis nodes. In this paper we provide an analytical explanation for this phenomenon. In...
Mirit Shalem, Ziv Bar-Yossef
SODA
2001
ACM
87views Algorithms» more  SODA 2001»
13 years 7 months ago
A linear lower bound on index size for text retrieval
Most information-retrieval systems preprocess the data to produce an auxiliary index structure. Empirically, it has been observed that there is a tradeoff between query response t...
Erik D. Demaine, Alejandro López-Ortiz
IJFCS
2008
110views more  IJFCS 2008»
13 years 5 months ago
Indexing Gapped-Factors Using a Tree
We present a data structure to index a specific kind of factors, that is of substrings, called gapped-factors. A gapped-factor is a factor containing a gap that is ignored during ...
Pierre Peterlongo, Julien Allali, Marie-France Sag...
FUIN
2006
98views more  FUIN 2006»
13 years 5 months ago
On-line Approximate String Matching in Natural Language
We consider approximate pattern matching in natural language text. We use the words of the text as the alphabet, instead of the characters as in traditional string matching approac...
Kimmo Fredriksson
KDD
2007
ACM
227views Data Mining» more  KDD 2007»
14 years 6 months ago
Fast best-effort pattern matching in large attributed graphs
We focus on large graphs where nodes have attributes, such as a social network where the nodes are labelled with each person's job title. In such a setting, we want to find s...
Hanghang Tong, Christos Faloutsos, Brian Gallagher...