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MFCS
2004
Springer
13 years 11 months ago
The Dual of Concatenation
A binary language-theoretic operation is proposed, which is dual to the concatenation of languages in the same sense as the universal quantifier in logic is dual to the existenti...
Alexander Okhotin
DLT
2010
13 years 7 months ago
Algorithmic Properties of Millstream Systems
Abstract. Millstream systems have recently been proposed as a formalization of the linguistic idea that natural language should be described as a combination of different modules r...
Suna Bensch, Henrik Björklund, Frank Drewes
NAACL
2010
13 years 4 months ago
Why Synchronous Tree Substitution Grammars?
Synchronous tree substitution grammars are a translation model that is used in syntax-based machine translation. They are investigated in a formal setting and compared to a compet...
Andreas Maletti
SAS
1999
Springer
13 years 10 months ago
Eliminating Dead Code on Recursive Data
This paper describes a powerful method for dead code analysis and elimination in the presence of recursive data constructions. We describe partially dead recursive data using live...
Yanhong A. Liu, Scott D. Stoller
STOC
2010
ACM
216views Algorithms» more  STOC 2010»
14 years 3 months ago
The HOM problem is decidable
We close affirmatively a question which has been open for long time: decidability of the HOM problem. The HOM problem consists in determining, given a tree homomorphism D and a re...
Guillem Godoy, Omer Giménez, Lander Ramos and Car...