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LPAR
2010
Springer
13 years 10 months ago
On the Satisfiability of Two-Variable Logic over Data Words
Data trees and data words have been studied extensively in connection with XML reasoning. These are trees or words that, in addition to labels from a finite alphabet, carry labels ...
Claire David, Leonid Libkin, Tony Tan
ORL
2006
73views more  ORL 2006»
14 years 11 days ago
Coordination through De Bruijn sequences
Let
Olivier Gossner, Penélope Hernández
CSL
2006
Springer
14 years 14 days ago
Automata and Logics for Words and Trees over an Infinite Alphabet
In a data word or a data tree each position carries a label from a finite alphabet and a data value from some infinite domain. These models have been considered in the realm of sem...
Luc Segoufin
IANDC
2008
141views more  IANDC 2008»
14 years 15 days ago
Graph connectivity, partial words, and a theorem of Fine and Wilf
The problem of computing periods in words, or finite sequences of symbols from a finite alphabet, has important applications in several areas including data compression, string se...
Francine Blanchet-Sadri, Deepak Bal, Gautam Sisodi...
ENDM
2008
82views more  ENDM 2008»
14 years 15 days ago
Repetition-free longest common subsequence
We study the problem of, given two sequences x and y over a finite alphabet, finding a repetitionfree longest common subsequence of x and y. We show several algorithmic results, a...
Said Sadique Adi, Marília D. V. Braga, Cris...
ECCC
2008
117views more  ECCC 2008»
14 years 15 days ago
The complexity of learning SUBSEQ(A)
Higman essentially showed that if A is any language then SUBSEQ(A) is regular, where SUBSEQ(A) is the language of all subsequences of strings in A. Let s1, s2, s3, . . . be the sta...
Stephen A. Fenner, William I. Gasarch, Brian Posto...